# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule; request for comments. · Published 2026-07-13 · Effective 2026-07-13 · 91 FR 42849
## Document
- **Document number:** 2026-14090
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 91 FR 42849
- **Publication date:** 2026-07-13
- **Effective date:** 2026-07-13
- **FAA docket:** Docket No. FAA-2026-7218
## Abstract

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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/07/13/2026-14090/airworthiness-directives-the-boeing-company-airplanes)
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