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Airworthiness Directive 2000-08-22

recurring
Official AD 2000-08-22 · FR doc 00-11058 · 2000-05-05 · appliance

Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 500N, and 600N Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) applicable to MD Helicopters Inc. (MDHI) Model 369D, 369E, 500N, and 600N helicopters with certain analog/digital turbine outlet temperature (TOT) indicators installed. This action requires repetitive calibration testing of the TOT indicating system and corrective actions if necessary. This amendment is prompted by seven reports of erroneous TOT readings and two reports of incorrect wiring harness terminal lugs on the thermocouple wiring. The actions specified in this AD are intended to prevent an erroneous TOT indication, damage to critical engine components, loss of engine power, and a subsequent forced landing.

Repetitive inspection. Re-inspect every 300 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2000-08-22 applies to

MakesMd Helicopters, Inc.
Models369D, 369E, 500N, 600N, 369

Turbine outlet temperature (TOT) indicating system calibration check. For Model 369E/369D/500N per MDHI SB369D-199/SB369E-093/SB500N-019, dated Jan 11, 2000; for Model 600N (including FADEC/ECU TOT sensing) per MDHI SB600N-026, dated Jan 11, 2000.

Whether AD 2000-08-22 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 2000-08-22 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.