Airworthiness Directives; The Boeing Company Airplanes

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register July 13, 2026. Document 2026-14090. Updated Nov. 8, 2026.

What it does

The FAA is superseding Airworthiness Directive (AD) 2026-13- 05, which applied to all The Boeing Company Model 737-8, 737-9, and 737-8200 airplanes. AD 2026-13-05 required revising the existing airplane flight manual (AFM) to provide the flightcrew with operating procedures (non-normal checklists) if a certain circuit breaker in the standby power control unit (SPCU) trips or certain environmental control system (ECS) circuit breakers downstream of the SPCU trip. Since the FAA issued AD 2026-13-05, a formatting error that omitted part of a certain appendix from AD 2026-13-05 was discovered. This AD retains the certain requirements of AD 2026-13-05 and requires revising the existing AFM to include the corrected appendix. The FAA is issuing this AD to address the unsafe condition on these products.

The Federal Aviation Administration's summary, as published in the Federal Register.

What changed in the regulation

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 39

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Federal Aviation Administration has published 482 final rules in 2026 so far, compared with 518 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

Before this

897 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.

July 10, 2026 Final rule. Airworthiness Directives; Airbus SAS Airplanes
July 10, 2026 Final rule. Airworthiness Directives; Airbus SAS Airplanes
July 10, 2026 Final rule. Airworthiness Directives; Bombardier, Inc., Airplanes
July 10, 2026 Final rule; request for comments. Airworthiness Directives; CFM International, S.A. Engines
July 10, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Safran Helicopter Engines, S.A. Engines
July 10, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
July 9, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; The Boeing Company Airplanes
July 8, 2026 Supplemental notice of proposed rulemaking (SNPRM). Airworthiness Directives; Restricted Category Model CH-47D Helicopters

Since then:

What happens next and when

This AD is effective July 13, 2026.

The agency's dates, word for word.

Check it yourself

The record as published

Document number	2026-14090
Action	Final rule; request for comments.
Agencies	Transportation Department; Federal Aviation Administration
Published	July 13, 2026
Effective date	July 13, 2026
Comments close	Aug. 27, 2026
Regulation identifier (RIN)	2120-AA64
Docket	FAA-2026-7218

Source: the Federal Register (public domain). The document in the Federal Register