Is AD 98-23603 a recurring Airworthiness Directive?

No — AD 98-23603 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-23603 apply to?

AD 98-23603 applies to Mcdonnell Douglas — models MD-88, MD-90-30. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-23603

one-time

AD 98-23603 · 1998-09-03 · airframe

Airworthiness Directives; McDonnell Douglas Model DC-9-80 Series Airplanes and Model MD-90-30 and MD-88 Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to all McDonnell Douglas Model DC-9-80 series airplanes and Model MD-90-30 and MD-88 airplanes, that requires a one-time inspection of the harness assembly of the tailcone emergency evacuation slide to determine the diameter of the swaged balls; reidentification of the harness assembly; and reinstallation or replacement of the assembly with a new assembly, if necessary. This amendment is prompted by a failed deployment of the tailcone emergency evacuation slide during a system test conducted by the manufacturer. The actions specified by this AD are intended to prevent failure of the tailcone emergency evacuation slide to deploy automatically due to incorrect diameter of the swaged balls on the wire rope of the harness assembly.

Which aircraft AD 98-23603 applies to

MakesMcdonnell Douglas

ModelsMD-88, MD-90-30

applicability derived from the AD summary — confirm the model/serial from the records

Whether AD 98-23603 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 98-23603 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.