Airworthiness Directive · Amendment 39-18399 · Engine controls
B-N Group Ltd. Airplanes
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.
We are superseding an airworthiness directive (AD) 2014-03-18 for 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. This AD results from mandatory continuing airworthiness information (MCAI) issued 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 damage of the cable sliding end assembly and installation of the incorrect end fitting on engine control cable assemblies. We are issuing this AD to require actions to address the unsafe condition on these products.
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.
