Is AD 98-08-17 a recurring Airworthiness Directive?

No — AD 98-08-17 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-08-17 apply to?

AD 98-08-17 applies to General Dynamics (Convair) — models 240, 340, 440, 580, 600, 640. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-08-17

one-time

Official AD 98-08-17 · FR doc 98-9756 · 1998-04-14 · airframe

Airworthiness Directives; Turbo-Propeller Powered General Dynamics (Convair) Model 240, 340, and 440 Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to various turbo-propeller powered General Dynamics (Convair) Model 240, 340, and 440 series airplanes, that requires revising the Airplane Flight Manual (AFM) to modify the limitation that prohibits positioning the power levers below the flight idle stop during flight, and to provide a statement of the consequences of positioning the power levers below the flight idle stop during flight. This amendment is prompted by incidents and accidents involving airplanes equipped with turboprop engines in which the ground propeller beta range was used improperly during flight. The actions specified by this AD are intended to prevent loss of airplane controllability, or engine overspeed and consequent loss of engine power caused by the power levers being positioned below the flight idle stop while the airplane is in flight.

Which aircraft AD 98-08-17 applies to

MakesGeneral Dynamics (Convair)

Models240, 340, 440, 580, 600, 640

Applies only to turbo-propeller-powered Model 240, 340, and 440 series airplanes, including turboprop conversions commonly designated Model 580, 600, and 640 series; certificated in any category. Required action is an Airplane Flight Manual limitation prohibiting positioning of power levers below the flight-idle stop in flight (no hardware modification).

Whether AD 98-08-17 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 98-08-17 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.