Is AD 99-26-04 a recurring Airworthiness Directive?

No — AD 99-26-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-26-04 apply to?

AD 99-26-04 applies to Kaman — models K-1200. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-26-04

one-time

Official AD 99-26-04 · FR doc 00-1642 · 2000-01-24 · airframe

Airworthiness Directives; Kaman Aerospace Corporation Model K1200 Helicopters

What this AD requires

This document publishes in the Federal Register an amendment adopting Emergency Priority Letter Airworthiness Directive (AD) 99-26- 04, which was sent previously to all known U.S. owners and operators of Kaman Aerospace Corporation (Kaman) Model K1200 helicopters by individual letters. This AD requires, before the first flight of each day, inspecting for clutch assembly integrity. Replacing any unairworthy clutch assembly with an airworthy clutch assembly is required before further flight. This amendment is prompted by two incidents of engine adapter flange failure and loss of power to the main rotors. The actions specified by this AD are intended to prevent failure of the engine adapter flange, loss of power to the main rotors, and a subsequent forced landing.

Which aircraft AD 99-26-04 applies to

MakesKaman

ModelsK-1200

Part-conditional — K974002-701.

Daily inspection of clutch assembly integrity via Kaflex shaft anti-rotation feel/sound check; remove any unairworthy clutch assembly P/N K974002-701 before further flight. Applies to Kaman K-1200 (K-MAX), per explicit reference to Kaman K-1200 K-MAX Maintenance Manual.

Whether AD 99-26-04 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 99-26-04 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.