Airworthiness Directive · Amendment 39-22715 · Landing gear
BAE Systems (Operations) Limited Airplanes
This AD applies to all BAE Systems (Operations) Limited Model BAe 146-100A, -200A, and -300A airplanes and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes, certificated in any category.
The FAA is superseding Airworthiness Directive (AD) 2022-25- 18, which applied to certain BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146-RJ series airplanes. AD 2022-25-18 required repetitive inspections for cracking of the main landing gear (MLG) side stay outer link and replacement if necessary. This AD was prompted by additional investigations of the causes of the cracking being conducted. This AD requires a reduction of the repetitive visual inspection interval, provides optional repetitive special detailed inspections, and requires accomplishing a one-off dimensional tolerance check and performing a repetitive lubrication of the MLG side stay outer link pivot, as specified in United Kingdom (U.K.) Civil Aviation Authority (CAA) (U.K. CAA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, United Kingdom (U.K.) Civil Aviation Authority (CAA) (U.K. CAA) AD G-2023-0004R1, dated November 16, 2023 (U.K. CAA AD G-2023-0004R1).
(1) Where U.K. CAA AD G-2023-0004R1 refers to July 7, 2023 (the effective date of U.K. CAA AD G-2023-0004 at original issue), this AD requires using the effective date of this AD.
(2) This AD does not adopt the paragraph that begins with “Required as indicated, unless accomplished previously in accordance with ASB.32-A189...” and the Note that begins with “Prior accomplishment of inspection requirements...” specified in “Required Actions(s) and Compliance Time(s)” of U.K. CAA AD G-2023-0004R1.
(3) Where U.K. CAA AD G-2023-0004R1 refers to “ASB,” “the ASB,” or “ASB.32-A189 Revision 2,” this AD requires using BAE Systems (Operations) Limited Alert Service Bulletin ASB.32-A189, Revision 2, dated August 3, 2023.
(4) Where U.K. CAA AD G-2023-0004R1 specifies a detailed visual inspection “every 500 flights or 6 months (whichever occurs first),” for this AD, replace that text with “repeat at intervals not to exceed 500 flight cycles or 6 months, whichever occurs first.”
(5) Where U.K. CAA AD G-2023-0004R1 specifies a special detailed inspection “every 1200 flights or 12 months (whichever occurs first),” for this AD, replace that text with “repeat at intervals not to exceed 1,200 flight cycles or 12 months, whichever occurs first.”
(6) Where U.K. CAA AD G-2023-0004R1 specifies “in accordance with the dimensional limits provided in Appendix 2 then Safran Landing Systems must be contacted to provide further instructions,” this AD requires “before further flight, repair using a method approved by the Manager, International Validation Branch, FAA; or the U.K. CAA; or BAE Systems (Operations) Limited's U.K. CAA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature.”
(7) Where U.K. CAA AD G-2023-0004R1 specifies the lubrication of the MLG sidestay outer link pivots “every 500 flights or 6 months (whichever occurs first),” for this AD, replace that text with “at intervals not to exceed 500 flight cycles or 6 months, whichever occurs first.”
(8) Where paragraph (5) of U.K. CAA AD G-2023-0004R1 specifies “as required by paragraphs (1) and (2) of this AD,” for this AD, replace that text with “as required by paragraphs (1), (2), and (3) of this AD.”
(9) Where the Note in paragraph (5) of U.K. CAA AD G-2023-0004R1 specifies “the part must have been inspected in accordance with paragraph (1) of this AD and a one-off dimensional check, airworthiness assessment and reporting performed in accordance with paragraph (2) of this AD,” for this AD, replace that text with “the part must have been inspected in accordance with paragraph (1) or (2) of this AD and a one-off dimensional check and airworthiness assessment performed in accordance with paragraph (3) of this AD.”
(10) This AD does not adopt the “Remarks” section of U.K. CAA AD G-2023-0004R1.
Although U.K. CAA AD G-2023-0004R1 and BAE Systems (Operations) Limited Alert Service Bulletin ASB.32-A189, Revision 2, dated August 3, 2023, specify to submit certain information to the manufacturer, this AD does not include that requirement.
