Airworthiness Directive · Amendment 39-23180 · Stabilizers
MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Superseded. A later AD replaced this one: AD 2026-08-02. Comply with the one in force.
This AD applies to MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes, certificated in any category, as identified in Transport Canada AD CF-2025-38, effective August 19, 2025 (Transport Canada AD CF-2025-38).
The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC (type certificate previously held by Bombardier, Inc.) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by reports of loose and missing bolts on the horizontal stabilizer (H-stab) anti- yaw steady fitting block. This AD requires repetitive torque checks of the H-stab anti-yaw steady fitting block bolts. 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-2025-38.
(1) Where Transport Canada AD CF-2025-38 refers to its effective date, this AD requires using the effective date of this AD.
(2) Where Transport Canada AD CF-2025-38 refers to hours air time, this AD requires using flight hours.
(3) Where Transport Canada AD CF-2025-38 refers to the effective date of Transport Canada AD CF-2024-24 (July 4, 2024), this AD requires using the effective date of this AD.
(4) Where paragraph B. of Transport Canada AD CF-2025-38 specifies to repeat the torques check “every 2,200 hours air time from the previous inspection”, for this AD, replace that text with “at intervals not to exceed 2,200 flight hours”.
(5) This AD does not adopt paragraph C. of Transport Canada AD CF-2025-38.
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, International Validation 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 International Validation Branch, send it to the attention of the person identified in paragraph (j) of this AD and email 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, International Validation Branch, FAA; or Transport Canada; or MHI RJ Aviation ULC'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 Fatin Saumik, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 516-228-7300; email: 9-avs-nyaco-cos@faa.gov.
