Text in force at CS25-28: from CS25-0, effective 17 Oct 2003.
(a) Limit load tests of control surfaces are required. These tests must include the horn or fitting to which the control system is attached.
(b) Compliance with the special factors requirements of CS 25.619 to 25.625 and 25.657 for control surface hinges must be shown by analysis or individual load tests.
ED Decision 2003/002/RM · Source