TailplateTailplate
Run a report

Airworthiness Directive 2021-11-24

one-time
Official AD 2021-11-24 · FR doc 2021-12436 · 2021-06-15 · airframe

Airworthiness Directives; The Boeing Company Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD was prompted by significant changes made to the airworthiness limitations (AWLs) related to fuel tank ignition prevention and the nitrogen generation system (NGS). This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate the April 2019 or November 2020 revision of the airworthiness limitations document. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-11-24 applies to

MakesThe Boeing Company
Models737-600, 737-700, 737-700C, 737-800, 737-900, 737-900ER, 737
Serial-conditional — narrows to serials 1–7596.

Range given in the AD is Boeing line numbers (L/Ns), not manufacturer serial numbers. Excludes L/Ns 7352, 7362, 7377, 7417, 7457, 7522, 7587, and 7592.

Whether AD 2021-11-24 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 2021-11-24 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.