Airworthiness Directive · Amendment 39-22936 · Fuselage
MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
This AD applies to all MHI RJ Aviation ULC (Type Certificate previously held by Bombardier, Inc.) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by the discovery of ten ultrasonic inspections associated with airworthiness limitations (AWL) tasks and structural deviation inspection requirements (SDIR) tasks potentially not detecting cracks. This AD requires repetitive ultrasonic inspections of certain structural areas for cracking, and prohibits use of the previous revisions of certain procedures and mandates the use of the revised procedures when performing the inspections required by the associated AWL and SDIR tasks, as specified in a Transport Canada AD, which is incorporated by reference (IBR). This AD also requires repair of cracking. 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-2023-74, dated November 21, 2023 (Transport Canada AD CF-2023-74).
(1) Where Transport Canada AD CF-2023-74 refers to its effective date, this AD requires using the effective date of this AD.
(2) Where paragraph A. of Transport Canada AD CF-2023-74 specifies to perform AWL tasks and SDIR tasks, for this AD, the initial compliance time for the tasks is at the time specified in paragraph A. of Transport Canada AD CF-2023-74 or within 30 days after the effective date of this AD, whichever occurs later.
(3) Where paragraph B. of Transport Canada AD CF-2023-74 refers to phase-in compliance times in Table 1 of Transport Canada AD CF-2023-74, this AD requires using the applicable phase-in time identified in Table 1 of Transport Canada AD CF-2023-74, or within 30 days after the effective date of this AD, whichever occurs later.
(4) If, during any inspection required by paragraph (g) of this AD, any cracking is found, repair before further flight 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.
(5) If generic repair engineering order (GREO) 601R-53-61-345 has been performed only on the upper web or lower web, then the inspection specified in non-destructive testing manual (NDTM) part 4 procedure 51-53-61-345 (as specified in Transport Canada AD CF-2023-74) is applicable only to the repaired location (where a doubler is installed).
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, 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, 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 Yaser Osman, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; email 9-avs-nyaco-cos@faa.gov.
