Airworthiness Directive · Amendment 39-22953 · Stabilizers
Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes
This AD applies to Airbus Canada Limited Partnership (Type Certificate previously held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Model BD-500-1A10 and BD-500-1A11 airplanes, certificated in any category, as identified in Transport Canada AD CF-2023-68R1, dated April 30, 2024 (Transport Canada AD CF-2023-68R1).
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This AD was prompted by reported events of annunciated horizontal stabilizer trim actuator (HSTA) jams occurring at the end of the cruise phase of flight. This AD requires lubricating the HSTA using an improved method, at a reduced interval, as specified in a Transport Canada AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Transport Canada AD CF-2023-68R1.
(1) Where Transport Canada AD CF-2023-68R1 refers to “the effective date of AD CF-2023-68 (18 October 2023),” this AD requires using the effective date of this AD.
(2) Where Transport Canada AD CF-2023-68R1 refers to hours air time, this AD requires using flight hours.
(3) Where paragraph A of Part I of Transport Canada AD CF-2023-68R1 specifies an initial compliance time for performing the lubrication of the HSTA, for this AD, the initial compliance time is at the earlier of the times specified in paragraphs (h)(3)(i) and (ii) of this AD.
(i) Within 1,100 flight hours after the effective date of this AD.
(ii) Within 12 months after the date of the most recent HSTA lubrication task, or within 5 days after the effective date of this AD, whichever occurs later.
(4) Where paragraph B of Part I of Transport Canada AD CF-2023-68R1 specifies an initial compliance time for performing the lubrication of the HSTA, for this AD, the initial compliance time is at the later of the times specified in paragraphs (h)(4)(i) and (ii) of this AD.
(i) Within 1,100 flight hours or 12 months, whichever occurs first, since the date of issuance of the original airworthiness certificate or the original export certificate of airworthiness.
(ii) Within 5 days after the effective date of this AD.
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, AIR-520, Continued Operational Safety 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 responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the Continued Operational Safety Branch, mail it to the address identified in paragraph (j) of this AD. Information may be emailed to: AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, AIR-520, Continued Operational Safety Branch, FAA; or Transport Canada; or Airbus Canada Limited Partnership's Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature.
For more information about this AD, contact Mark Taylor, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone 781-238-7229; email Mark.Taylor@faa.gov.
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.
