Is AD 2001-21-02 a recurring Airworthiness Directive?

No — AD 2001-21-02 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2001-21-02 apply to?

AD 2001-21-02 applies to Cessna — models 441. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-21-02

one-time

Official AD 2001-21-02 · FR doc 01-26323 · 2001-10-19 · airframe

Airworthiness Directives; Honeywell International Inc. (formerly AlliedSignal Inc. and Garrett Turbine Engine Company) TPE331-8, -10N, and -12B Turboprop Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc. and Garrett Turbine Engine Company) TPE331-8, -10N, and -12B turboprop engines with certain electronic engine controls (EEC's) installed. This AD requires revising the Emergency and Normal Procedures section of the applicable Airplane Flight Manual (AFM) until the existing EEC's are replaced. This amendment is prompted by a report of an engine experiencing an uncommanded full power increase during an approach while both engine power levers were at the flight idle gate. The actions specified in this AD are intended to minimize exposure to flight and ground operations that could lead to the loss of control of the airplane due to asymmetric thrust and an uncommanded torque increase.

Which aircraft AD 2001-21-02 applies to

MakesCessna

Models441

Serial-conditional — narrows to serials 441-0001–441-0172, 441-0173–?.

Part-conditional — 2101322-1, 2101322-4, 2101322-11, 2101322-12, 2101322-13, 2101322-14, 2101322-15, 2101322-16.

Applies to Cessna Model 441 (Conquest II) airplanes; requires AFM temporary revisions for asymmetric-thrust/uncommanded-torque emergency procedures (revision set differs for SN 441-0001 through 441-0172 vs. 441-0173 and higher) and replacement of Honeywell/AlliedSignal TPE331 electronic engine controls (EEC) with listed P/Ns by August 31, 2003, to minimize loss-of-control risk from uncommanded torque increase.

Whether AD 2001-21-02 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 2001-21-02 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.