Text in force at CS29-12: from CS29-0, effective 14 Nov 2003.
(a) Each turbine engine powered rotorcraft and Category A reci procating engi ne powered rotorcraft, and each Category B reciprocating engine powered rot orcraft wi th engines of more than 24 581 cm3 (1500 cubi c inches) must have a fire ext inguishing sy stem for t he desi gnated fi re zones. The fi re ext inguishing sy stem for a powerplant must be abl e to simultaneously protect all zones of t he power plant com partment for which protection is provided.
(b) For m ulti-engine p owered ro torcraft, th e fire extinguishing syst em, the quantity of extinguishing agent , and t he rat e of di scharge must:
(1) For each auxiliary power unit and combustion equi pment, provi de at l east one adequate discharge; and
(2) For each other de signated fire zone, provide two adequate discharges.
(c) For single en gine ro torcraft, th e q uantity of extinguishing agent and t he rat e of di scharge must provi de at l east one adequat e di scharge for the engine compartment.
(d) It m ust be shown by either actual or simulated flight tests th at under critical airflow conditions i n fl ight t he discharge of the extinguishing agent in each designated fire zone will provide an ag ent co ncentration cap able o f extinguishing fires in that zone and of m inimising the probability of re-ignition.
ED Decision 2003/016/RM · Source