Airworthiness directives › 2021-05-06
AD 2021-05-06 Airworthiness Directives; Airbus Helicopters
Applicability*9
This AD becomes effective April 19, 2021.
Compliance
(1) The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager, send it to the attention of: David Hatfield, Aerospace Engineer, Aircraft Systems Section, Technical Innovation Policy Branch, Policy & Innovation Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110. Information may be emailed to: 9-AVS-AIR-730-AMOC@faa.gov. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office.
Required actions
The subject of this AD is addressed in European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD No. 2015-0149, dated July 23, 2015; EASA AD No. 2015-0168, dated August 13, 2015; and EASA AD No. 2015-0169, dated August 13, 2015. You may view the EASA ADs on the internet at https://www.regulations.gov in Docket No. FAA-2020-0916.
Unsafe condition
Within 50 hours time-in-service (TIS), inspect each internal and external snap fastener to determine if it can be unbuttoned by hand. Note 1 to the introductory text of paragraph (e): Airbus Helicopters refers to the snap fastener as a “press-stud.” (1) If all internal and external snap fasteners can be unbuttoned by hand, no further action is required by this AD. (2) If an external snap fastener does not unbutton by hand: (i) Before further flight, replace the male part of the snap fastener and determine if the snap fastener can be unbuttoned by hand force. If the snap fastener still does not unbutton by hand, before further flight, install self-gripping tape. (ii) Thereafter, at intervals not to exceed 15 hours TIS, inspect the external extraction tape and self-gripping tape for a crack, a tear, disintegration, or wear. If the extraction tape or self-gripping tape has a crack, a tear, any disintegration, wear, or is missing, before further flight, replace the tape. Replacing the extraction tape or self-gripping tape does not terminate this repetitive inspection. (iii) Within 100 hours TIS, replace each external snap fastener by following the Accomplishment Instructions, paragraph 3.B.4., of Airbus Helicopters Alert Service Bulletin (ASB) No. AS332-56.00.10, Revision 0, dated July 16, 2015 (ASB AS332-56.00.10); ASB No. EC155-56A006, Revision 0, dated August 10, 2015 (ASB EC155-56A006); ASB No. EC225-56A008, Revision 0, dated July 16, 2015 (ASB EC225-56A008); or ASB No. SA330-56.02, Revision 0, dated August 10, 2015 (ASB SA330-56.02), as applicable to your model helicopter. Replacing the external snap fastener terminates the repetitive inspection requirements specified in paragraph (e)(2)(ii) of this AD. (3) If an internal snap fastener does not unbutton by hand: (i) Before further flight, install self-gripping tape by following the Accomplishment Instructions, paragraph 3.B.3., of AS332-56.00.10, ASB EC155-56A006, ASB EC225-56A008, or ASB SA330-56.02, as applicable to your model helicopter. (ii) Within 900 hours TIS, replace each internal snap fastener by following the Accomplishment Instructions, paragraph 3.B.5., of ASB AS332-56.00.10, ASB EC155-56A006, ASB EC225-56A008, or ASB SA330-56.02, as applicable to your model helicopter.
Affected ADs
This AD defines the unsafe condition as failure of a snap fastener to unbutton. This condition could result in failure of the window to jettison, preventing occupants from exiting the helicopter during an emergency.
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