Airworthiness Directives; The Boeing Company Airplanes
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.
What this item does
The short version, using the agency's own summary text.
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.
Final rule; request for comments.
Important dates
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Published
July 13, 2026
Starts
July 13, 2026
Federal rulebook sections mentioned
These are the parts of the Code of Federal Regulations cited in the filing.