DRS

Dek Regulatory System

Welcome to the World of Certification!

14 CFR 25

FAA · 446 provisions · 153 revisions · current 25-153 (22 Oct 2024)

Revisions (153)
RevisionEffective
25-01 Feb 1965
25-17 Jun 1965
25-226 Mar 1965
25-328 May 1965
25-430 Apr 1965
25-529 Jul 1965
25-61 Aug 1965
25-714 Nov 1965
25-85 Feb 1966
25-930 Jun 1966
25-1010 Oct 1966
25-114 Jun 1967
25-121 Aug 1967
25-1327 Jul 1967
25-1410 Oct 1967
25-1524 Oct 1967
25-166 Oct 1967
25-1720 Jun 1968
25-1829 Sep 1968
25-1916 Nov 1968
25-2023 Apr 1969
25-215 Feb 1970
25-225 Feb 1970
25-238 May 1970
25-249 May 1970
25-2518 Sep 1970
25-2623 Apr 1971
25-2711 Aug 1971
25-2825 Sep 1971
25-2921 Oct 1971
25-305 Nov 1971
25-3110 Jan 1972
25-321 May 1972
25-3321 Oct 1972
25-3431 Dec 1972
25-351 Mar 1974
25-3631 Oct 1974
25-3714 Feb 1975
25-381 Feb 1977
25-3910 Feb 1977
25-402 May 1977
25-411 Sep 1977
25-421 Mar 1978
25-4312 Apr 1978
25-444 Dec 1978
25-451 Dec 1978
25-461 Dec 1978
25-4724 Dec 1979
25-4831 Dec 1979
25-4931 Dec 1979
25-5020 Feb 1980
25-516 Mar 1980
25-529 Sep 1980
25-5331 Aug 1980
25-5414 Oct 1980
25-5528 Apr 1982
25-5631 Jan 1983
25-5726 Mar 1984
25-5826 Nov 1984
25-5926 Nov 1984
25-6016 Jun 1986
25-6120 Aug 1986
25-629 Dec 1987
25-636 May 1988
25-6416 Jun 1988
25-6511 Oct 1988
25-6626 Sep 1988
25-6724 Jul 1989
25-6818 Aug 1990
25-6930 Oct 1989
25-7027 Nov 1989
25-7110 May 1990
25-7220 Aug 1990
25-7310 Sep 1990
25-7416 May 1991
25-756 Jan 1992
25-763 Jun 1992
25-7729 Jul 1992
25-7829 Mar 1993
25-7927 Sep 1993
25-8031 May 1994
25-8131 May 1994
25-8221 Jun 1994
25-836 Mar 1995
25-8410 Jul 1995
25-8528 Dec 1995
25-8611 Mar 1996
25-875 Jul 1996
25-889 Dec 1996
25-892 Jan 1997
25-9012 Mar 1997
25-9128 Aug 1997
25-9220 Mar 1998
25-9319 Mar 1998
25-9425 Mar 1998
25-9530 Apr 1998
25-9630 Apr 1998
25-9726 Jun 1998
25-9810 Mar 1999
25-997 Jun 2000
25-10013 Dec 2000
25-10118 Jan 2001
25-1026 Jun 2001
25-10315 Jun 2001
25-10415 Jun 2001
25-10526 Jul 2001
25-10615 Jan 2002
25-10724 May 2002
25-10826 Dec 2002
25-10913 Jan 2003
25-11021 Jul 2003
25-1112 Sep 2003
25-1124 Sep 2003
25-11315 Apr 2004
25-1142 Jun 2004
25-1152 Aug 2004
25-11626 Nov 2004
25-11717 Dec 2004
25-11911 May 2006
25-12015 Feb 2007
25-1219 Oct 2007
25-1225 Sep 2007
25-12310 Dec 2007
25-1247 Apr 2008
25-12519 Sep 2008
25-12623 Dec 2008
25-12728 Nov 2008
25-12829 May 2009
25-1292 Sep 2009
25-13015 Oct 2010
25-1313 Jan 2011
25-13214 Jan 2011
25-1338 Mar 2011
25-1348 Aug 2011
25-13530 Jan 2012
25-13612 Mar 2012
25-1372 Jul 2013
25-13812 May 2014
25-1391 Dec 2014
25-1405 Jan 2015
25-1419 Feb 2015
25-14218 Apr 2016
25-14323 Aug 2016
25-14421 Mar 2017
25-1455 Mar 2018
25-14619 Nov 2018
25-14723 Jan 2023
25-1489 Dec 2022
25-14914 Aug 2023
25-15025 Aug 2023
25-15117 Jul 2023
25-15226 Sep 2024
25-15322 Oct 2024
General 5 sections
SectionTitleVersionsFirst / latest
§25.1Applicability.125-0 / 25-0
§25.2Special retroactive requirements.625-15 / 25-99
§25.3Special provisions for ETOPS type design approvals125-120 / 25-120
§25.4Definitions.125-152 / 25-152
§25.5Incorporations by reference.225-125 / 25-145
Flight 54 sections
SectionTitleVersionsFirst / latest
§25.21Proof of compliance.
General		825-0 / 25-140
§25.23Load distribution limits.
General		125-0 / 25-0
§25.25Weight limits.
General		425-0 / 25-63
§25.27Center of gravity limits.
General		125-0 / 25-0
§25.29Empty weight and corresponding center of gravity.
General		325-0 / 25-72
§25.31Removable ballast.
General		125-0 / 25-0
§25.33Propeller speed and pitch limits.
General		325-0 / 25-72
§25.45General.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.47Wing flap position.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.49Stalling speeds.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.51Takeoff.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.55Takeoff speeds.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.57Accelerate-stop distance.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.59Takeoff path.
Performance: Reciprocating Engine Powered Airplanes		325-0 / 25-38 ✕ Deleted
§25.61Temperature accountability.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.65Climb: all engines operating.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.67Climb: one engine inoperative.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.69Climb: two engines inoperative.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.75Landing.
Performance: Reciprocating Engine Powered Airplanes		225-0 / 25-38 ✕ Deleted
§25.101General.
Performance		325-0 / 25-92
§25.103Stall speed.
Performance: Turbine Engine Powered Airplanes		325-0 / 25-121
§25.105Takeoff.
Performance		425-0 / 25-140
§25.107Takeoff speeds.
Performance		825-0 / 25-135
§25.109Accelerate-stop distance.
Performance		325-0 / 25-92
§25.111Takeoff path.
Performance		1025-0 / 25-140
§25.113Takeoff distance and takeoff run.
Performance		325-0 / 25-92
§25.115Takeoff flight path.
Performance		225-0 / 25-92
§25.117Climb: general.
Performance: Turbine Engine Powered Airplanes		125-0 / 25-0
§25.119Landing climb: All-engines-operating.
Performance		625-0 / 25-140
§25.121Climb: One-engine inoperative
Performance		525-0 / 25-140
§25.123En route flight paths.
Performance: Turbine Engine Powered Airplanes		325-0 / 25-140
§25.125Landing.
Performance		625-0 / 25-140
§25.143General.
Controllability and Maneuverability		725-0 / 25-140
§25.145Longitudinal control.
Controllability and Maneuverability		625-0 / 25-108
§25.147Directional and lateral control.
Controllability and Maneuverability		525-0 / 25-115
§25.149Minimum control speed.
Controllability and Maneuverability		525-0 / 25-108
§25.161Trim.
Trim		525-0 / 25-115
§25.171General.
Stability		225-0 / 25-7
§25.173Static longitudinal stability.
Stability		225-0 / 25-7
§25.175Demonstration of static longitudinal stability.
Stability		425-0 / 25-115
§25.177Static lateral-directional stability.
Stability		525-0 / 25-135
§25.181Dynamic stability.
Stability		425-0 / 25-108
§25.201Stall demonstration.
Stalls		625-0 / 25-108
§25.203Stall characteristics.
Stalls		225-0 / 25-84
§25.205Stalls: Critical engine inoperative.
Stalls		225-0 / 25-72 ✕ Deleted
§25.207Stall warning.
Stalls		725-0 / 25-140
§25.231Longitudinal stability and control.
Ground and Water Handling Characteristics		225-0 / 25-108
§25.233Directional stability and control.
Ground and Water Handling Characteristics		525-0 / 25-108
§25.235Taxiing condition.
Ground and Water Handling Characteristics		125-0 / 25-0
§25.237Wind velocities.
Ground and Water Handling Characteristics		625-0 / 25-140
§25.239Spray characteristics, control, and stability on water.
Ground and Water Handling Characteristics		125-0 / 25-0
§25.251Vibration and buffeting.
Miscellaneous Flight Requirements		425-0 / 25-77
§25.253High-speed characteristics.
Miscellaneous Flight Requirements		825-0 / 25-140
§25.255Out-of-trim characteristics.
Miscellaneous Flight Requirements		125-42 / 25-42
Structure 70 sections
SectionTitleVersionsFirst / latest
§25.301Loads.
General		225-0 / 25-23
§25.302Interaction of systems and structures.
General		125-152 / 25-152
§25.303Factor of safety.
General		225-0 / 25-23
§25.305Strength and deformation.
General		525-0 / 25-86
§25.307Proof of structure.
General		525-0 / 25-139
§25.321General.
Flight Loads		325-0 / 25-86
§25.331Symmetric maneuvering conditions.
Flight Maneuver and Gust Conditions		725-0 / 25-141
§25.333Flight (maneuvering) envelope.
Flight Maneuver and Gust Conditions		225-0 / 25-86
§25.335Design airspeeds.
Flight Maneuver and Gust Conditions		425-0 / 25-91
§25.337Limit maneuvering load factors.
Flight Maneuver and Gust Conditions		225-0 / 25-23
§25.341Gust and turbulence loads.
Flight Maneuver and Gust Conditions		425-0 / 25-141
§25.343Design fuel and oil loads.
Flight Maneuver and Gust Conditions		425-0 / 25-141
§25.345High lift devices.
Flight Maneuver and Gust Conditions		525-0 / 25-141
§25.349Rolling conditions.
Flight Maneuver and Gust Conditions		425-0 / 25-94
§25.351[Yaw maneuver] conditions.
Flight Maneuver and Gust Conditions		625-0 / 25-91
§25.353Rudder control reversal conditions.
Flight Maneuver and Gust Conditions		125-147 / 25-147
§25.361Engine torque.
Supplementary Conditions		525-0 / 25-141
§25.362Engine failure loads.
Supplementary Conditions		125-141 / 25-141
§25.363Side load on engine and auxiliary power unit mounts.
Supplementary Conditions		325-0 / 25-91
§25.365Pressurized compartment loads.
Supplementary Conditions		625-0 / 25-149
§25.367Unsymmetrical loads due to engine failure.
Supplementary Conditions		125-0 / 25-0
§25.371Gyroscopic loads.
Supplementary Conditions		425-0 / 25-141
§25.373Speed control devices.
Supplementary Conditions		425-0 / 25-141
§25.391Control surface loads: General.
Control Surface and System Loads		325-0 / 25-141
§25.393Loads parallel to hinge line.
Control Surface and System Loads		125-0 / 25-0
§25.395Control system.
Control Surface and System Loads		425-0 / 25-141
§25.397Control system loads.
Control Surface and System Loads		325-0 / 25-72
§25.399Dual control system.
Control Surface and System Loads		125-0 / 25-0
§25.405Secondary control system.
Control Surface and System Loads		125-0 / 25-0
§25.407Trim tab effects.
Control Surface and System Loads		125-0 / 25-0
§25.409Tabs.
Control Surface and System Loads		125-0 / 25-0
§25.415Ground gust conditions.
Control Surface and System Loads		425-0 / 25-141
§25.427Unsymmetrical loads.
Control Surface and System Loads		325-0 / 25-86
§25.445Auxiliary aerodynamic surfaces.
Control Surface and System Loads		225-0 / 25-86
§25.457Wing flaps.
Control Surface and System Loads		125-0 / 25-0
§25.459Special devices.
Control Surface and System Loads		225-0 / 25-72
§25.471General.
Ground Loads		325-0 / 25-148
§25.473Landing load conditions and assumptions.
Ground Loads		425-0 / 25-103
§25.477Landing gear arrangement.
Ground Loads		125-0 / 25-0
§25.479Level landing conditions.
Ground Loads		325-0 / 25-91
§25.481Tail down landing conditions.
Ground Loads		325-0 / 25-94
§25.483One-gear landing conditions.
Ground Loads		225-0 / 25-91
§25.485Side load conditions.
Ground Loads		225-0 / 25-91
§25.487Rebound landing condition.
Ground Loads		125-0 / 25-0
§25.489Ground handling conditions.
Ground Loads		225-0 / 25-23
§25.491Taxi, takeoff and landing roll.
Ground Loads		225-0 / 25-91
§25.493Braked roll conditions.
Ground Loads		325-0 / 25-97
§25.495Turning.
Ground Loads		125-0 / 25-0
§25.497Tail-wheel yawing.
Ground Loads		125-0 / 25-0
§25.499Nose-wheel yaw and steering.
Ground Loads		425-0 / 25-91
§25.503Pivoting.
Ground Loads		125-0 / 25-0
§25.507Reversed braking.
Ground Loads		125-0 / 25-0
§25.509Towing loads.
Ground Loads		225-0 / 25-23
§25.511Ground load: unsymmetrical loads on multiple-wheel units.
Ground Loads		125-0 / 25-0
§25.519Jacking and tie-down provisions.
Ground Loads		125-81 / 25-81
§25.521General.
Water Loads		125-0 / 25-0
§25.523Design weights and center of gravity positions.
Water Loads		225-0 / 25-23
§25.525Application of loads.
Water Loads		225-0 / 25-148
§25.527Hull and main float load factors.
Water Loads		225-0 / 25-23
§25.529Hull and main float landing conditions.
Water Loads		125-0 / 25-0
§25.531Hull and main float takeoff conditions.
Water Loads		225-0 / 25-23
§25.533Hull and main float bottom pressures.
Water Loads		225-0 / 25-23
§25.535Auxiliary float loads.
Water Loads		325-0 / 25-148
§25.537Seawing loads.
Water Loads		125-0 / 25-0
§25.561General.
Emergency Landing Conditions		425-0 / 25-91
§25.562(Emergency landing dynamic conditions.)
Emergency Landing Conditions		125-64 / 25-64
§25.563Structural ditching provisions.
Emergency Landing Conditions		125-0 / 25-0
§25.571Damage - tolerance and fatigue evaluation of structure.
Fatigue Evaluation		1025-0 / 25-148
§25.573Fatigue evaluation of landing gear.
Fatigue Evaluation		225-0 / 25-45 ✕ Deleted
§25.581Lightning protection.
Lightning Protection		125-23 / 25-23
Design and Construction 92 sections
SectionTitleVersionsFirst / latest
§25.601General.
General		125-0 / 25-0
§25.603Materials.
General		325-0 / 25-46
§25.605Fabrication methods.
General		225-0 / 25-46
§25.607Fasteners.
General		225-0 / 25-23
§25.609Protection of structure.
General		125-0 / 25-0
§25.611Accessibility provisions.
General		325-0 / 25-123
§25.613Material strength properties and material design values.
General		425-0 / 25-112
§25.615Design properties.
General		325-0 / 25-72 ✕ Deleted
§25.619Special factors.
General		225-0 / 25-23
§25.621Casting factors.
General		225-0 / 25-139
§25.623Bearing factors.
General		125-0 / 25-0
§25.625Fitting factors.
General		325-0 / 25-72
§25.629Aeroelastic stability requirements.
General		725-0 / 25-152
§25.631Bird strike damage.
General		125-23 / 25-23
§25.651Proof of strength.
Control Surfaces		125-0 / 25-0
§25.655Installation.
Control Surfaces		125-0 / 25-0
§25.657Hinges.
Control Surfaces		225-0 / 25-23
§25.671General.
Control Systems		325-0 / 25-152
§25.672Stability augmentation and automatic and power-operated systems.
Control Systems		125-23 / 25-23
§25.673Two-control airplanes.
Control Systems		225-0 / 25-72 ✕ Deleted
§25.675Stops.
Control Systems		225-0 / 25-38
§25.677Trim systems.
Control Systems		325-0 / 25-115
§25.679Control system gust locks.
Control Systems		125-0 / 25-0
§25.681Limit load static tests.
Control Systems		125-0 / 25-0
§25.683Operation tests.
Control Systems		325-0 / 25-139
§25.685Control system details.
Control Systems		225-0 / 25-38
§25.689Cable systems.
Control Systems		125-0 / 25-0
§25.693Joints.
Control Systems		225-0 / 25-72
§25.695Power-boost and power-operated control system.
Control Systems		225-0 / 25-23 ✕ Deleted
§25.697Lift and drag devices, controls.
Control Systems		425-0 / 25-57
§25.699Lift and drag device indicator.
Control Systems		225-0 / 25-23
§25.701Flap and slat interconnection.
Control Systems		325-0 / 25-72
§25.703Takeoff warning system.
Control Systems		125-42 / 25-42
§25.721General.
Landing Gear		525-0 / 25-139
§25.723Shock absorption tests.
Landing Gear		525-0 / 25-103
§25.725Reserved.
Landing Gear		325-0 / 25-103
§25.727Reserved.
Landing Gear		325-0 / 25-103
§25.729Retracting mechanism.
Landing Gear		625-0 / 25-136
§25.731Wheels.
Landing Gear		325-0 / 25-107
§25.733Tires.
Landing Gear		725-0 / 25-78
§25.735Brakes.
Landing Gear		725-0 / 25-108
§25.737Skis.
Landing Gear		125-0 / 25-0
§25.751Main float buoyancy.
Floats and Hulls		125-0 / 25-0
§25.753Main float design.
Floats and Hulls		125-0 / 25-0
§25.755Hulls.
Floats and Hulls		125-0 / 25-0
§25.771Pilot compartment.
Personnel and Cargo Accommodations		225-0 / 25-4
§25.772Pilot compartment doors.
Personnel and Cargo Accommodations		425-33 / 25-106
§25.773Pilot compartment view.
Personnel and Cargo Accommodations		925-0 / 25-144
§25.775Windshields and windows.
Personnel and Cargo Accommodations		325-0 / 25-38
§25.777Cockpit controls.
Personnel and Cargo Accommodations		225-0 / 25-46
§25.779Motion and effect of cockpit controls.
Personnel and Cargo Accommodations		225-0 / 25-72
§25.781Cockpit control knob shape.
Personnel and Cargo Accommodations		225-0 / 25-72
§25.783Fuselage Doors.
Personnel and Cargo Accommodations		725-0 / 25-114
§25.785Seats, berths, safety belts, and harnesses.
Personnel and Cargo Accommodations		825-0 / 25-88
§25.787Stowage compartments.
Personnel and Cargo Accommodations		525-0 / 25-139
§25.789Retention of items of mass in passenger and crew compartments [and galleys.]
Personnel and Cargo Accommodations		225-32 / 25-46
§25.791Passenger information signs and placards.
Personnel and Cargo Accommodations		325-32 / 25-153
§25.793Floor surfaces.
Personnel and Cargo Accommodations		125-51 / 25-51
§25.795Security considerations.
Personnel and Cargo Accommodations		525-106 / 25-150
§25.801Ditching.
Emergency Provisions		225-0 / 25-72
§25.803Emergency evacuation.
Emergency Provisions		825-0 / 25-72
§25.805Flight crew emergency exits.
Emergency Provisions		225-0 / 25-72 ✕ Deleted
§25.807Emergency exits.
Emergency Provisions		1125-0 / 25-114
§25.809Emergency exit arrangement.
Emergency Provisions		1125-0 / 25-116
§25.810Emergency egress assist means and escape routes.
Emergency Provisions		325-72 / 25-114
§25.811Emergency exit marking.
Emergency Provisions		725-0 / 25-88
§25.812Emergency lighting.
Emergency Provisions		825-15 / 25-128
§25.813Emergency exit access.
Emergency Provisions		1125-0 / 25-128
§25.815Width of aisle.
Emergency Provisions		325-0 / 25-38
§25.817Maximum number of seats abreast.
Emergency Provisions		125-15 / 25-15
§25.819Lower deck service compartments (including galleys.)
Emergency Provisions		225-53 / 25-110
§25.820Lavatory doors.
Emergency Provisions		125-114 / 25-114
§25.831Ventilation.
Ventilation and Heating		425-0 / 25-89
§25.832Cabin ozone concentration.
Ventilation and Heating		325-50 / 25-94
§25.833Combustion heating systems.
Ventilation and Heating		225-0 / 25-72
§25.841Pressurized cabins.
Pressurization		425-0 / 25-151
§25.843Tests for pressurized cabins.
Pressurization		125-0 / 25-0
§25.851Fire extinguishers.
Fire Protection		525-0 / 25-142
§25.853Compartment interiors.
Fire Protection		1325-0 / 25-116
§25.854Lavatory fire protection.
Fire Protection		125-74 / 25-74
§25.855Cargo or baggage compartments.
Fire Protection		925-0 / 25-142
§25.856Thermal/Acoustic Insulation materials.
Fire Protection		125-111 / 25-111
§25.857Cargo compartment classification.
Fire Protection		525-0 / 25-142
§25.858Cargo [or baggage compartment smoke or fire detection systems.]
Fire Protection		225-54 / 25-93
§25.859Combustion heater fire protection.
Fire Protection		325-0 / 25-23
§25.863Flammable fluid fire protection.
Fire Protection		325-0 / 25-46
§25.865Fire protection of flight controls, engine mounts, and other flight structure.
Fire Protection		125-23 / 25-23
§25.867Fire protection: other components.
Fire Protection		125-23 / 25-23
§25.869Fire protection: systems.
Fire Protection		325-72 / 25-123
§25.871Leveling [means.]
Miscellaneous		225-0 / 25-23
§25.875Reinforcement near propellers.
Miscellaneous		125-0 / 25-0
§25.899Electrical bonding and protection against static electricity.125-123 / 25-123
Powerplant 91 sections
SectionTitleVersionsFirst / latest
§25.901Installation.
General		625-0 / 25-152
§25.903Engines.
General		1125-0 / 25-148
§25.904Automatic takeoff thrust control system (ATTCS).
General		125-62 / 25-62
§25.905Propellers.
General		525-0 / 25-126
§25.907Propeller vibration and fatigue.
General		225-0 / 25-126
§25.925Propeller clearance.
General		225-0 / 25-72
§25.929Propeller deicing.
General		225-0 / 25-140
§25.933Reversing systems.
General		625-0 / 25-152
§25.934Turbojet engine thrust reverser system tests.
General		125-23 / 25-23
§25.937Turbopropeller-drag limiting systems.
General		125-0 / 25-0
§25.939Turbine engine operating characteristics.
General		325-0 / 25-40
§25.941Inlet, engine, and exhaust compatibility.
General		225-38 / 25-121
§25.943Negative acceleration.
General		125-40 / 25-40
§25.945Thrust or power augmentation system.
General		325-40 / 25-115
§25.951General.
Fuel System		525-0 / 25-73
§25.952Fuel system analysis and test.
Fuel System		125-40 / 25-40
§25.953Fuel system independence.
Fuel System		125-0 / 25-0
§25.954Fuel system lightning protection.
Fuel System		225-14 / 25-146
§25.955Fuel flow.
Fuel System		225-0 / 25-11
§25.957Flow between interconnected tanks.
Fuel System		125-0 / 25-0
§25.959Unusable fuel supply.
Fuel System		325-0 / 25-40
§25.961Fuel system hot weather operation.
Fuel System		325-0 / 25-57
§25.963Fuel tanks: general.
Fuel System		425-0 / 25-139
§25.965Fuel tank tests.
Fuel System		325-0 / 25-40
§25.967Fuel tank installations.
Fuel System		125-0 / 25-0
§25.969Fuel tank expansion space.
Fuel System		225-0 / 25-11
§25.971Fuel tank sump.
Fuel System		125-0 / 25-0
§25.973Fuel tank filler connection.
Fuel System		425-0 / 25-115
§25.975Fuel tank vents and carburetor vapor vents.
Fuel System		225-0 / 25-143
§25.977Fuel tank outlet.
Fuel System		425-0 / 25-36
§25.979Pressure fueling system.
Fuel System		525-0 / 25-72
§25.981Fuel tank explosion prevention.
Fuel System		425-11 / 25-146
§25.991Fuel pumps.
Fuel System Components		125-0 / 25-0
§25.993Fuel system lines and fittings.
Fuel System Components		225-0 / 25-15
§25.994Fuel system components.
Fuel System Components		325-23 / 25-139
§25.995Fuel valves.
Fuel System Components		225-0 / 25-40
§25.997Fuel strainer or filter.
Fuel System Components		425-0 / 25-57
§25.999Fuel system drains.
Fuel System Components		225-0 / 25-38
§25.1001Fuel jettisoning system.
Fuel System Components		425-0 / 25-108
§25.1011General.
Oil System		125-0 / 25-0
§25.1013Oil tanks.
Oil System		625-0 / 25-72
§25.1015Oil tank tests.
Oil System		325-0 / 25-36
§25.1017Oil lines and fittings.
Oil System		125-0 / 25-0
§25.1019Oil strainer or filter.
Oil System		325-0 / 25-57
§25.1021Oil [system drains.]
Oil System		225-0 / 25-57
§25.1023Oil radiators.
Oil System		125-0 / 25-0
§25.1025Oil valves.
Oil System		125-0 / 25-0
§25.1027Propeller feathering system.
Oil System		225-0 / 25-38
§25.1041General.
Cooling		325-0 / 25-38
§25.1043Cooling tests.
Cooling		225-0 / 25-42
§25.1045Cooling test procedures.
Cooling		225-0 / 25-57
§25.1091Air induction.
Induction System		625-0 / 25-100
§25.1093Induction system icing protection.
Induction System		725-0 / 25-140
§25.1101Carburetor air preheater design.
Induction System		125-0 / 25-0
§25.1103Induction system ducts and air duct systems.
Induction System		325-0 / 25-46
§25.1105Induction system screens.
Induction System		125-0 / 25-0
§25.1107Inter-coolers and after-coolers.
Induction System		125-0 / 25-0
§25.1121General.
Exhaust System		225-0 / 25-40
§25.1123Exhaust piping.
Exhaust System		225-0 / 25-40
§25.1125Exhaust heat exchangers.
Exhaust System		225-0 / 25-38
§25.1127Exhaust driven turbo-superchargers.
Exhaust System		125-0 / 25-0
§25.1141Powerplant controls: general.
Powerplant Controls and Accessories		525-0 / 25-115
§25.1142Auxiliary power unit controls.
Powerplant Controls and Accessories		125-46 / 25-46
§25.1143Engine controls.
Powerplant Controls and Accessories		425-0 / 25-57
§25.1145Ignition switches.
Powerplant Controls and Accessories		225-0 / 25-40
§25.1147Mixture controls.
Powerplant Controls and Accessories		125-0 / 25-0
§25.1149Propeller speed and pitch controls.
Powerplant Controls and Accessories		125-0 / 25-0
§25.1153Propeller feathering controls.
Powerplant Controls and Accessories		225-0 / 25-11
§25.1155Reverse thrust and propeller pitch settings below the flight regime.
Powerplant Controls and Accessories		225-0 / 25-11
§25.1157Carburetor air temperature controls.
Powerplant Controls and Accessories		125-0 / 25-0
§25.1159Supercharger controls.
Powerplant Controls and Accessories		125-0 / 25-0
§25.1161Fuel jettisoning system controls.
Powerplant Controls and Accessories		125-0 / 25-0
§25.1163Powerplant accessories.
Powerplant Controls and Accessories		225-0 / 25-57
§25.1165Engine ignition systems.
Powerplant Controls and Accessories		325-0 / 25-72
§25.1167Accessory gearboxes.
Powerplant Controls and Accessories		125-38 / 25-38
§25.1181Designated fire zones: regions included.
Powerplant Fire Protection		525-0 / 25-115
§25.1182Nacelle areas behind firewalls, and engine pod attaching structures containing flammable fluid lines.
Powerplant Fire Protection		125-11 / 25-11
§25.1183Flammable fluid-carrying components.
Powerplant Fire Protection		625-0 / 25-101
§25.1185Flammable fluids.
Powerplant Fire Protection		325-0 / 25-94
§25.1187Drainage and ventilation of fire zones.
Powerplant Fire Protection		125-0 / 25-0
§25.1189Shutoff means.
Powerplant Fire Protection		325-0 / 25-57
§25.1191Firewalls.
Powerplant Fire Protection		125-0 / 25-0
§25.1192Engine accessory section diaphragm.
Powerplant Fire Protection		125-23 / 25-23
§25.1193Cowling and nacelle skin.
Powerplant Fire Protection		125-0 / 25-0
§25.1195Fire extinguishing systems.
Powerplant Fire Protection		325-0 / 25-46
§25.1197Fire extinguishing agents.
Powerplant Fire Protection		325-0 / 25-40
§25.1199Extinguishing agent containers.
Powerplant Fire Protection		325-0 / 25-40
§25.1201Fire extinguishing system materials.
Powerplant Fire Protection		125-0 / 25-0
§25.1203Fire-detector system.
Powerplant Fire Protection		425-0 / 25-123
§25.1205Fire protection: other components.
Powerplant Fire Protection		225-0 / 25-23 ✕ Deleted
§25.1207Compliance.
Powerplant Fire Protection		225-40 / 25-46
Equipment 68 sections
SectionTitleVersionsFirst / latest
§25.1301Function and installation.
General		325-0 / 25-152
§25.1302Installed systems and equipment for use by the flightcrew.
General		125-137 / 25-137
§25.1303Flight and navigation instruments.
General		625-0 / 25-90
§25.1305Powerplant instruments.
General		925-0 / 25-115
§25.1307Miscellaneous equipment.
General		525-0 / 25-72
§25.1309Equipment, systems, and installations.
General		625-0 / 25-152
§25.1310Power source capacity and distribution125-123 / 25-123
§25.1316Electrical and electronic system lightning protection.
General		225-80 / 25-134
§25.1317High-intensity Radiated Fields (HIRF) Protection
High-Intensity Radiated Fields (HIRF) Protection		125-122 / 25-122
§25.1321Arrangement and visibility.
Instruments: Installation		325-0 / 25-41
§25.1322Flightcrew alerting.
Instruments: Installation		225-38 / 25-131
§25.1323Airspeed indicating system.
Instruments: Installation		525-0 / 25-140
§25.1324Angle of attack system.
Instruments: Installation		125-140 / 25-140
§25.1325Static pressure systems.
Instruments: Installation		625-0 / 25-140
§25.1326Pitot heat indication systems.
Instruments: Installation		125-43 / 25-43
§25.1327Magnetic direction indicator.
Instruments: Installation		125-0 / 25-0
§25.1329Flight guidance system
Instruments: Installation		325-0 / 25-119
§25.1331Instruments using a power supply.
Instruments: Installation		325-0 / 25-41
§25.1333Instrument systems.
Instruments: Installation		325-0 / 25-41
§25.1335Flight director systems.
Instruments: Installation		225-41 / 25-119 ✕ Deleted
§25.1337Powerplant instruments.
Instruments: Installation		225-0 / 25-40
§25.1351General.
Electrical Systems and Equipment		325-0 / 25-72
§25.1353Electrical equipment and installations.
Electrical Systems and Equipment		525-0 / 25-123
§25.1355Distribution system.
Electrical Systems and Equipment		325-0 / 25-38
§25.1357Circuit protective devices.
Electrical Systems and Equipment		225-0 / 25-123
§25.1359Electrical system fire and smoke protection.
Electrical Systems and Equipment		525-0 / 25-72 ✕ Deleted
§25.1360Precautions against injury125-123 / 25-123
§25.1362Electrical supplies for emergency conditions.125-123 / 25-123
§25.1363Electrical system tests.
Electrical Systems and Equipment		125-0 / 25-0
§25.1365Electrical appliances, motors, and transformers.
Electrical Systems and Equipment		225-123 / 25-152
§25.1369Lightning strike protection.
Electrical Systems and Equipment		225-0 / 25-23 ✕ Deleted
§25.1381Instrument lights.
Lights		225-0 / 25-72
§25.1383Landing lights.
Lights		125-0 / 25-0
§25.1385Position light system installation.
Lights		225-0 / 25-38
§25.1387Position light system dihedral angles.
Lights		225-0 / 25-30
§25.1389Position light distribution and intensities.
Lights		125-0 / 25-0
§25.1391Minimum intensities in the horizontal plane of forward and rear position lights.
Lights		125-0 / 25-0
§25.1393Minimum intensities in any vertical plane of forward and rear position lights.
Lights		125-0 / 25-0
§25.1395Maximum intensities in overlapping beams of forward and rear position lights.
Lights		125-0 / 25-0
§25.1397Color specifications.
Lights		225-0 / 25-27
§25.1399Riding light.
Lights		125-0 / 25-0
§25.1401Anticollision light system.
Lights		325-0 / 25-41
§25.1403Wing icing detection lights.
Lights		125-38 / 25-38
§25.1411General.
Safety Equipment		725-0 / 25-116
§25.1413Safety belts.
Safety Equipment		425-0 / 25-72 ✕ Deleted
§25.1415Ditching equipment.
Safety Equipment		525-0 / 25-82
§25.1416Pneumatic de-icer boot system.
Safety Equipment		225-46 / 25-72 ✕ Deleted
§25.1419Ice protection.
Safety Equipment		525-0 / 25-129
§25.1420Supercooled large drop icing conditions.
Safety Equipment		125-140 / 25-140
§25.1421Megaphones.
Safety Equipment		125-41 / 25-41
§25.1423Public address system.
Safety Equipment		325-70 / 25-115
§25.1431Electronic equipment.
Miscellaneous Equipment		225-0 / 25-113
§25.1433Vacuum systems.
Miscellaneous Equipment		225-0 / 25-72
§25.1435Hydraulic systems.
Miscellaneous Equipment		625-0 / 25-104
§25.1438Pressurization and pneumatic systems.
Miscellaneous Equipment		125-41 / 25-41
§25.1439Protective breathing equipment.
Miscellaneous Equipment		325-0 / 25-115
§25.1441Oxygen equipment and supply.
Miscellaneous Equipment		125-0 / 25-0
§25.1443Minimum mass flow of supplemental oxygen.
Miscellaneous Equipment		125-0 / 25-0
§25.1445Equipment standards for the oxygen distributing system.
Miscellaneous Equipment		125-0 / 25-0
§25.1447Equipment standards for oxygen dispensing units.
Miscellaneous Equipment		525-0 / 25-151
§25.1449Means for determining use of oxygen.
Miscellaneous Equipment		125-0 / 25-0
§25.1450Chemical oxygen generators.
Miscellaneous Equipment		225-41 / 25-138
§25.1451Fire protection for oxygen equipment.
Miscellaneous Equipment		225-0 / 25-72 ✕ Deleted
§25.1453Protection of oxygen equipment from rupture.
Miscellaneous Equipment		125-0 / 25-0
§25.1455Draining of fluids subject to freezing.
Miscellaneous Equipment		225-0 / 25-23
§25.1457Cockpit voice recorders.
Miscellaneous Equipment		625-0 / 25-124
§25.1459Flight recorders.
Miscellaneous Equipment		725-8 / 25-124
§25.1461Equipment containing high energy rotors.
Miscellaneous Equipment		125-41 / 25-41
Operating Limitations and Information 34 sections
SectionTitleVersionsFirst / latest
§25.1501General.225-0 / 25-42
§25.1503Airspeed limitations: general.
Operating Limitations		125-0 / 25-0
§25.1505Maximum operating limit speed.
Operating Limitations		225-0 / 25-23
§25.1507Maneuvering speed.
Operating Limitations		125-0 / 25-0
§25.1511Flap extended speed.
Operating Limitations		125-0 / 25-0
§25.1513Minimum control speed.
Operating Limitations		125-0 / 25-0
§25.1515Landing gear speeds.
Operating Limitations		225-0 / 25-38
§25.1516Other speed limitations.
Operating Limitations		125-105 / 25-105
§25.1517Rough air speed, V<sub>RA.</sub>
Operating Limitations		325-86 / 25-148
§25.1519Weight, center of gravity, and weight distribution.
Operating Limitations		125-0 / 25-0
§25.1521Powerplant limitations.
Operating Limitations		525-0 / 25-140
§25.1522Auxiliary power unit limitations.
Operating Limitations		225-46 / 25-72
§25.1523Minimum flight crew.
Operating Limitations		225-0 / 25-3
§25.1525Kinds of operation.
Operating Limitations		125-0 / 25-0
§25.1527Ambient air temperature and operating altitude.
Operating Limitations		225-0 / 25-105
§25.1529Instructions for Continued Airworthiness.
Operating Limitations		225-21 / 25-54
§25.1531Maneuvering flight load factors.
Operating Limitations		125-0 / 25-0
§25.1533Additional operating limitations.
Operating Limitations		525-0 / 25-140
§25.1535ETOPS approval.125-120 / 25-120
§25.1541General.
Markings and Placards		125-0 / 25-0
§25.1543Instrument markings: general.
Markings and Placards		225-0 / 25-72
§25.1545Airspeed limitation information.
Markings and Placards		125-0 / 25-0
§25.1547Magnetic direction indicator.
Markings and Placards		125-0 / 25-0
§25.1549Powerplant [and auxiliary power unit instruments.]
Markings and Placards		225-0 / 25-40
§25.1551Oil quantity indicator.
Markings and Placards		225-0 / 25-72
§25.1553Fuel quantity indicator.
Markings and Placards		125-0 / 25-0
§25.1555Control markings.
Markings and Placards		125-0 / 25-0
§25.1557Miscellaneous markings and placards.
Markings and Placards		425-0 / 25-72
§25.1561Safety equipment.
Markings and Placards		225-0 / 25-46
§25.1563Airspeed placard.
Markings and Placards		125-0 / 25-0
§25.1581General.
Airplane Flight Manual		325-0 / 25-72
§25.1583Operating limitations.
Airplane Flight Manual		725-0 / 25-130
§25.1585Operating procedures.
Airplane Flight Manual		725-0 / 25-105
§25.1587Performance information.
Airplane Flight Manual		625-0 / 25-108
Electrical Wiring Interconnection Systems (EWIS) 17 sections
SectionTitleVersionsFirst / latest
§25.1701Definition.125-123 / 25-123
§25.1703Function and installation: EWIS125-123 / 25-123
§25.1705Systems and functions: EWIS125-123 / 25-123
§25.1707System separation: EWIS.125-123 / 25-123
§25.1709System safety: EWIS125-123 / 25-123
§25.1711Component identification: EWIS125-123 / 25-123
§25.1713Fire protection: EWIS125-123 / 25-123
§25.1715Electrical bonding and protection against static electricity: EWIS125-123 / 25-123
§25.1717Circuit protective devices: EWIS125-123 / 25-123
§25.1719Accessibility provisions: EWIS125-123 / 25-123
§25.1721Protection of EWIS125-123 / 25-123
§25.1723Flammable fluid fire protection; EWIS125-123 / 25-123
§25.1725Powerplants: EWIS125-123 / 25-123
§25.1727Flammable fluid shutoff means: EWIS125-123 / 25-123
§25.1729Instructions for Continued Airworthiness: EWIS125-123 / 25-123
§25.1731Powerplant and APU fire detector system: EWIS125-123 / 25-123
§25.1733Fire detector systems, general: EWIS125-123 / 25-123
Special Federal Aviation Regulations 1 section
SectionTitleVersionsFirst / latest
§25.1801SFAR No. 111--Lavatory Oxygen Systems.125-133 / 25-133
Appendix 14 sections
SectionTitleVersionsFirst / latest
14 CFR 25 A25Appendix A to Part 25125-0 / 25-0
14 CFR 25 B25Appendix B to Part 25125-0 / 25-0
14 CFR 25 C25Appendix C to Part 25325-121 / 25-140
14 CFR 25 D25Appendix D to Part 25125-3 / 25-3
14 CFR 25 E25Appendix E to Part 25125-6 / 25-6
14 CFR 25 F25Appendix F to Part 25225-32 / 25-142
14 CFR 25 H25Instructions for Continued Airworthiness725-54 / 25-152
14 CFR 25 I25Installation of an Automatic Takeoff Thrust Control System (ATTCS)125-62 / 25-62
14 CFR 25 J25Emergency Evacuation225-72 / 25-117
14 CFR 25 K25Extended Operations (ETOPS)225-120 / 25-145
14 CFR 25 L25HIRF Environments and Equipment HIRF Test Levels125-122 / 25-122
14 CFR 25 M25Fuel Tank System Flammability Reduction Means225-125 / 25-145
14 CFR 25 N25Fuel Tank Flammability Exposure and Reliability Analysis225-125 / 25-145
14 CFR 25 O25Supercooled Large Drop Icing Conditions125-140 / 25-140
Report an issue

Report an issue

Is something wrong with what you are looking at? Tell the maintainer; the report is filed against this page.

What kind of issue is it? (required)

Reports are posted publicly on GitHub with the address of this page. Please don't include personal information.