Airworthiness directives › 2016-04-05
AD 2016-04-05 Airworthiness Directives; B-N Group Ltd. Airplanes
Applicability*9
This AD applies to B-N Group Ltd. Models BN-2, BN-2A, BN-2A-2, BN-2A-3, BN-2A-6, BN-2A-8, BN-2A-9, BN-2A-20, BN-2A-21, BN-2A-26, BN-2A-27, BN-2B-20, BN-2B-21, BN-2B-26, BN-2B-27, BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3 airplanes, all serial numbers, certificated in any category.
Compliance
Unless already done, do the actions in paragraphs (f)(1) through (f)(6) of this AD: (1) For all airplanes except the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3: Within the next 6 months after April 1, 2014 (the effective date retained from AD 2014-03-18), do a one-time inspection of the engine control cable assemblies, part number (P/N) 137835, P/N 172449-1, P/N 172450, and P/N 172451, and surrounding areas for damage (cracking, distortion, corrosion); for the correct cable end-fitting; and to assure the wire locking is intact following Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 1, dated August 30, 2013; or Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 2, dated July 17, 2015. (2) For the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3 airplanes: Within the next 3 months after March 24, 2016 (the effective date of this AD), do a one-time inspection of the engine control cable assemblies, P/N 80468 and P/N NB-45-2883, and surrounding areas for damage (cracking, distortion, corrosion); for the correct cable end-fitting; and to assure the wire locking is intact following Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 2, dated July 17, 2015. (3) For all airplanes except the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3: If no discrepancies are found during the inspection required in paragraph (f)(1) of this AD, before further flight, inspect the control linkages for proper adjustment and make any necessary changes following Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 1, dated August 30, 2013; or Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 2, dated July 17, 2015. (4) For the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3 airplanes: If no discrepancies are found during the inspection required in paragraph (f)(2) of this AD, before further flight, inspect the control linkages for proper adjustment and make any necessary changes following Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 2, dated July 17, 2015. (5) For all airplanes except the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3: If any discrepancies are found during the inspection required in paragraph (f)(1) of this AD and/or the control linkages cannot be properly adjusted as specified in paragraph (f)(3) of this AD, before further flight, replace the engine control cable assembly with a serviceable unit following Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 1, dated August 30, 2013; or Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 2, dated July 17, 2015. (6) For the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3 airplanes: If any discrepancies are found during the inspection required in paragraph (f)(2) of this AD and/or the control linkages cannot be properly adjusted as specified in paragraph (f)(4) of this AD, before further flight, replace the engine control cable assembly with a serviceable unit following Britten-Norman Aircraft Limited Service Bulletin No. SB 334, Issue 2, dated July 17, 2015. (7) For all airplanes except the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3: After April 1, 2014 (the effective date retained from AD 2014-03-18), do not install on any airplane engine control cable assemblies, P/N 137835, P/N 172449-1, P/N 172450, and P/N 172451, unless they are new or have been inspected as required in paragraphs (f)(1) and (f)(3) of this AD and found free of any discrepancies and have proper adjustment. (8) For the Trislander Models BN2A MK. III, BN2A MK. III-2, and BN2A MK. III-3 airplanes: After March 24, 2016 (the effective date of this AD), do not install on any airplane engine control cable assemblies P/N 80468 and/or P/N NB-45-2883, unless they are new or have been inspected as required in paragraphs (f)(2) and (f)(4) of this AD and found free of any discrepancies and have proper adjustment.
Required actions
The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Raymond Johnston, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4159; fax: (816) 329-3047; email: raymond.johnston@faa.gov. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service.
Unsafe condition
This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as possible damage of the cable sliding end assembly and installation of the incorrect end fitting on engine control cable assemblies. We are issuing this proposed AD to detect and correct damage of the cable sliding end assembly (cracking, distortion, corrosion) and incorrect end fittings on the engine control assemblies, which could lead to reduced engine control with consequent loss of control, and to incorporate revised service information with updated information on applicability and on the identity of parts to be inspected on some airplanes.
Affected ADs
This AD supersedes AD 2014-03-18, Amendment 39-17755 (79 FR 10340; February 25, 2014) (“AD 2014-03-18”).
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