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Airworthiness Directive 2000-18-10

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Official AD 2000-18-10 · FR doc 00-23207 · 2000-09-11 · airframe

Airworthiness Directives; Kaman Model K-1200 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for Kaman Model K-1200 helicopters. This action requires replacing certain unairworthy sprag clutches with airworthy sprag clutches. This amendment is prompted by two incidents of sprag clutch failure during external load operations. The actions specified in this AD are intended to prevent a malfunctioning transmission clutch, loss of drive to the main rotor system, and subsequent loss of control of the helicopter.

Which aircraft AD 2000-18-10 applies to

MakesKaman
Part-conditional — K974110-005, K974110-003.

Requires replacement of sprag clutch P/N K974110-005 (considered unairworthy) in the main rotor transmission drive system with airworthy sprag clutch P/N K974110-003, per Kaman Aerospace Corporation SB No. 090; specific helicopter model not stated in excerpted applicability text.

Whether AD 2000-18-10 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 2000-18-10 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.