Airworthiness Directive · Amendment 39-22557 · Electrical power
ATR-GIE Avions de Transport Régional Airplanes
This AD applies to all ATR-GIE Avions de Transport Régional Model ATR42-500, and ATR72-101, -102, -201, -202, -211, -212, and -212A airplanes, certificated in any category.
The FAA is superseding Airworthiness Directive (AD) 2021-10- 20, which applied to certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72-212A airplanes. AD 2021-10-20 required revising the existing aircraft flight manual (AFM) and applicable corresponding operational procedures to update a systems limitation, limiting dispatch with certain equipment inoperative, performing an operational test of a certain contactor and an electrical test of a certain battery toggle switch, and performing corrective actions if necessary. This AD was prompted by new procedures for modifying the wiring and replacing the battery toggle switch that have been developed that would terminate the AD requirements. This AD continues to require certain actions in AD 2021-10-20, and requires modifying the battery toggle switch wiring and replacing the battery toggle switch, and revises the applicability to include additional airplanes, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. This AD also prohibits the installation of affected parts. 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, European Union Aviation Safety Agency (EASA) AD 2023-0078R1, dated April 20, 2023 (EASA AD 2023-0078R1).
(1) Where EASA AD 2023-0078R1 refers to “05 May 2021 [the effective date of EASA AD 2021-0120-E],” this AD requires using May 14, 2021 (the effective date of AD 2021-10-20).
(2) Where EASA AD 2023-0078R1 refers to its effective date, this AD requires using the effective date of this AD.
(3) Where paragraphs (1), (2), and (5) of EASA AD 2023-0078R1 specify to “inform all flight crews, and, thereafter, operate the aeroplane accordingly,” this AD does not require those actions as those actions are already required by existing FAA operating regulations (see 14 CFR 91.9, 91.505, and 121.137).
(4) Where paragraph (4) of EASA AD 2023-0078R1 specifies actions if “discrepancies are detected,” for this AD a “discrepancy” is defined as a lack of power supply to DU 4 or a INV FAULT is not triggered.
(5) This AD does not adopt the “Remarks” section of EASA AD 2023-0078R1.
Although certain service information referenced in EASA AD 2023-0078R1 specifies to submit certain information to the manufacturer, this AD does not include that requirement.
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 (k) of this AD or email to: 9-AVS-AIR-730-AMOC@faa.gov. If mailing information, also submit information by email. 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 EASA; or ATR-GIE Avions de Transport Régional's EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature.
For more information about this AD, contact Shahram Daneshmandi, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 206-231-3220; email shahram.daneshmandi@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.
Aircraft
