Is AD 98-17-04 a recurring Airworthiness Directive?

No — AD 98-17-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-17-04 apply to?

AD 98-17-04 applies to Hartzell Propeller Inc. — models HC-E4A-3(A,I,J), HC-E4A. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-17-04

one-time

Official AD 98-17-04 · FR doc 98-21651 · 1998-08-14 · propeller

Airworthiness Directives; Hartzell Propeller Inc. HC-E4A-3(A,I,J) Series Propellers

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Hartzell Propeller Inc. HC-E4A-3(A,I,J) series propellers. This action requires a one-time inspection of the propeller blade counterweight clamps for thread damage in the bolt holes, and, if necessary, replacement with serviceable parts. This amendment is prompted by a report of a counterweight clamp bolt hole thread failure that resulted in the separation of the counterweight and the separation of a blade following impact with the counterweight. The actions specified in this AD are intended to prevent propeller blade counterweight clamp bolt hole thread failure, which can result in counterweight and propeller blade separation, and possible damage to the aircraft.

Which aircraft AD 98-17-04 applies to

MakesHartzell Propeller Inc.

ModelsHC-E4A-3(A,I,J), HC-E4A

Serial-conditional — narrows to serials HJ1–HJ1040.

Applies to propellers that have been previously overhauled or have had a counterweight clamp bolt removed for any reason.

Whether AD 98-17-04 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 98-17-04 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.