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Airworthiness Directive 2026-13-05

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Official AD 2026-13-05 · FR doc 2026-13241 · 2026-07-01 · airframe

Airworthiness Directives; The Boeing Company Airplanes

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2026-04- 05, which applied to all The Boeing Company Model 737-8, 737-9, and 737-8200 airplanes. AD 2026-04-05 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. Since the FAA issued AD 2026- 04-05, the FAA has determined that additional revisions to the AFM are necessary to address certain environmental control system (ECS) circuit breakers downstream of the SPCU that could also trip. This AD retains the requirements of AD 2026-04-05 and requires revising the existing AFM to provide the flightcrew with operating procedures (non-normal checklists) if certain ECS circuit breakers trip. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2026-13-05 applies to

MakesThe Boeing Company
Models737-8, 737-9, 737-8200, 737

Whether AD 2026-13-05 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 2026-13-05 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.