Is AD 99-15-04 a recurring Airworthiness Directive?

No — AD 99-15-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-15-04 apply to?

AD 99-15-04 applies to Piper — models PA-46-310P, PA-46-350P, PA-46. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-15-04

one-time

Official AD 99-15-04 · FR doc 00-13083 · 2000-05-25 · airframe

Airworthiness Directives; The New Piper Aircraft, Inc., Models PA-46-310P and PA-46-350P Airplanes

What this AD requires

This amendment revises Airworthiness Directive (AD) 99-15-04, which currently requires you to calibrate, inspect, and repair or replace portions of the turbine inlet temperature system on all The New Piper Aircraft, Inc. (New Piper) Models PA-46-310P and PA-46-350P airplanes (different actions for different airplane models). Information reveals that the AD should not apply to airplanes where the factory installed turbine inlet temperature gauge and associated probe have been replaced through supplemental type certificate (STC). This AD retains the actions of AD 99-15-04, and restricts the applicability accordingly. The actions specified by this AD are intended to prevent improper engine operation caused by improperly calibrated turbine inlet temperature indicators or defective turbine inlet temperature probes, which could result in engine damage/failure with consequent loss of control of the airplane.

Which aircraft AD 99-15-04 applies to

MakesPiper

ModelsPA-46-310P, PA-46-350P, PA-46

Applies only to airplanes equipped with a Lewis or Transicoil Turbine Inlet Temperature Gauge and associated probe; relief available only if gauge/probe replaced via STC.

Whether AD 99-15-04 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 99-15-04 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.