Airworthiness directives › 2015-22-53
AD 2015-22-53 Airworthiness Directives; Airbus Helicopters
Applicability*9
This AD supersedes Emergency AD 2015-22-52, Directorate Identifier 2015-SW-074-AD, dated October 28, 2015.
Compliance
Before further flight, insert a copy of this AD into the rotorcraft flight manual, Section 4 Normal Operating Procedures, or make pen and ink changes to the preflight and post-flight procedures as follows: (1) Stop performing the yaw load compensator check (ACCU TST switch) during preflight procedures, and instead perform the yaw load compensator check during post-flight procedures after rotor shut-down. (2) The yaw servo hydraulic switch (collective switch) must be in the “ON” (forward) position before takeoff. Note 2 to paragraph (f)(2) of this AD: The yaw servo hydraulic switch is also called the hydraulic pressure switch or hydraulic cut off switch in various Airbus Helicopters rotorcraft flight manuals.
Required actions
Special flight permits are prohibited.
Unsafe condition
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Affected ADs
This AD defines the unsafe condition as lack of hydraulic pressure in a tail rotor (T/R) hydraulic system. This condition could result in loss of T/R flight control and subsequent loss of control of the helicopter.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1