Airworthiness directives › 2015-18-51
AD 2015-18-51 Airworthiness Directives; Airbus Helicopters
Applicability*9
This AD becomes effective October 20, 2015 to all persons except those persons to whom it was made immediately effective by Emergency AD 2015-18-51, issued on September 11, 2015, which contains the requirements of this AD.
Compliance
Special flight permits will be permitted for flights to a location where the required inspection can be performed provided the flight does not exceed 5 hours time-in-service.
Required actions
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: George Schwab, Aviation Safety Engineer, Safety Management Group, Rotorcraft Directorate, FAA, 10101 Hillwood Pkwy, Fort Worth, TX 76177; telephone (817) 222-5110; email 9-ASW-FTW-AMOC-Requests@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC.
Unsafe condition
Before further flight: (1) Inspect each T/R blade for a burn mark, any disbonding of the leading edge protection, and a crack at the junction of the skin and the leading edge protection. Examples of a burn mark, disbonding, and a crack are shown in the photos under paragraph 3.B.2., Accomplishment Instructions, of Airbus Helicopters Alert Service Bulletin No. AS332-05.01.02, Revision 0, dated July 22, 2015. If there is a burn mark, any disbonding of the leading edge protection, or a crack at the junction of the skin and the leading edge protection on a T/R blade, replace all of the T/R blades with airworthy T/R blades. (2) Deactivate the rotor de-icing system. (3) Revise Section 2, Limitations, of the Protective Equipment for Flight in Icing Conditions supplement to the rotorcraft flight manual by inserting the following: ROTOR DE-ICING SYSTEM IS DEACTIVATED. FLIGHT INTO KNOWN ICING IS PROHIBITED. (4) Install a placard with 6 millimeter red letters on a white background next to the rotors de-icing control panel that states the following: ROTOR DE-ICING SYSTEM IS DEACTIVATED.
Affected ADs
This AD defines the unsafe condition as uncontrolled and un-annunciated power supply to the T/R de-icing system, which could overheat the T/R blades. This condition could result in structural damage to the T/R blades and subsequent loss of control of the helicopter.
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