Is AD 2021-09-15 a recurring Airworthiness Directive?

No — AD 2021-09-15 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-09-15 apply to?

AD 2021-09-15 applies to Lockheed Martin — models 382, 382B, 382E, 382F, 382G, C-130A, C-130B, C-130BL. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-09-15

one-time

Official AD 2021-09-15 · FR doc 2021-10262 · 2021-05-14 · airframe

Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G airplanes, type certificated in any category; and Model C-130A, C-130B, C-130BL, C-130E, C-130H, C-130H-30, C-130J, C-130J-30, EC-130Q, HC-130H, KC-130H, NC-130B, NC-130, and WC- 130H airplanes, type certificated in the restricted or amateur category. This AD was prompted by a crack found on the web attachment flange of the center wing upper forward corner fitting. This AD requires an eddy current surface scan for cracks of the center wing upper and lower forward corner fittings and fasteners, a torque check of the left and right outer-wing-to-center-wing front-beam-web-joint- splice-angle fasteners, and repair, retorqueing, or replacement if necessary. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-09-15 applies to

MakesLockheed Martin

Models382, 382B, 382E, 382F, 382G, C-130A, C-130B, C-130BL, C-130E, C-130H, C-130H-30, C-130J, C-130J-30, EC-130Q, HC-130H, KC-130H, NC-130B, NC-130, WC-130H, C-130

Model 382/382B/382E/382F/382G airplanes are type certificated in any category; Model C-130A, C-130B, C-130BL, C-130E, C-130H, C-130H-30, C-130J, C-130J-30, EC-130Q, HC-130H, KC-130H, NC-130B, NC-130, and WC-130H airplanes are type certificated in the restricted or amateur category only. Current type certificate holders for the restricted/amateur category airplanes include LeSEA, T.B.M. Inc., Western International Aviation, USDA Forest Service, Snow Aviation International, Heavylift Helicopter/Heavylift Helicopters, Hawkins & Powers Aviation, and Coulson Aviation (USA).

Whether AD 2021-09-15 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 2021-09-15 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.