Airworthiness Directive · Amendment 39-15971 · Fuselage
BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Airplanes
This AD applies to BAE Systems (Operations) Limited Model BAe 146-100A, -200A, and -300A series airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes, certificated in any category; all models, all serial numbers, that have embodied modification HCM00633E or HCM00934A.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from 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:
Unless already done, do the following actions.
(1) Within 4,000 flight cycles or 24 months after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 8,000 flight cycles, conduct a visual inspection of the steel grommets on the fairing panels in accordance with paragraph 2.C. of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008.
(2) If damage is found during any inspection required by paragraph (f)(1) of this AD, before further flight, do the actions specified in paragraph (f)(2)(i) or (f)(2)(ii) of this AD.
(i) Replace the grommets with new P/N SL5185 grommets in accordance with paragraph 2.C. of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008, and concurrently conduct a bonding inspection at each grommet location in accordance with paragraph 2.C. of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008. If unsatisfactory bonding is detected, before further flight, apply electro-conductive paste in accordance with Appendix 4 of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008.
Note 1: Unsatisfactory bonding, as used in this AD, is defined as: intermittent, loss of, or failure of the bond/electrical connection.
(ii) Do a temporary repair in accordance with Appendix 3 of the BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008, or an approved BAE Systems (Operations) Limited temporary repair scheme.
(3) For airplanes on which a temporary repair specified in paragraph (f)(2)(ii) of this AD has been done: Within 8,000 flight cycles after doing the temporary repair, replace any temporary repair grommets with new P/N SL5185 grommets in accordance with paragraph 2.C. of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53- 202, Revision 3, dated December 10, 2008, and concurrently conduct a bonding inspection at each grommet location in accordance with paragraph 2.C. of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008. If unsatisfactory bonding is detected, before further flight, apply electro-conductive paste in accordance with Appendix 4 of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008.
(4) For airplanes on which any new P/N SL5185 grommets have been installed without having a bonding inspection prior to the effective date of this AD: Before or during the next scheduled repetitive inspection in accordance with paragraph (f)(1) of this AD, conduct a bonding inspection in accordance with paragraph 2.C. of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008. If unsatisfactory bonding is detected, before further flight, apply electro-conductive paste in accordance with Appendix 4 of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008.
(5) Replacing all existing grommets with new P/N SL5185 grommets on all panels, including the corresponding bonding inspections and the application of the electro-conductive paste as applicable, in accordance with BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 3, dated December 10, 2008, terminates the repetitive inspections required by paragraph (f)(1) of this AD.
(6) Visual inspections, temporary repairs, and replacements of the grommets are also acceptable for compliance with the corresponding requirements of paragraphs (f)(1), (f)(2)(i), (f)(2)(ii), (f)(3), and (f)(5) of this AD if done before the effective date of this AD in accordance with BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 1, dated June 4, 2008.
(7) Visual inspections, temporary repairs, replacements of the grommets, bonding inspections, and applications of conductive paste are also acceptable for compliance with the corresponding requirements of paragraphs (f)(1), (f)(2)(i), (f)(2)(ii), (f)(3), (f)(4), and (f)(5) of this AD if done before the effective date of this AD in accordance with BAE Systems (Operations) Limited Inspection Service Bulletin ISB.53-202, Revision 2, dated October 24, 2008.
(8) Bonding inspections and applications of conductive paste are also acceptable for compliance with the corresponding requirement of paragraphs (f)(2)(i), (f)(3), (f)(4), and (f)(5) of this AD if done before the effective date of this AD in accordance with BAE Systems (Operations) Limited All Operator Message 08-015V, Issue 1, dated August 22, 2008.
Note 2: This AD differs from the MCAI and/or service information as follows: No differences.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
