Is AD 98-25030 a recurring Airworthiness Directive?

No — AD 98-25030 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-25030 apply to?

AD 98-25030 applies to Mcdonnell Douglas — models C-9. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-25030

one-time

AD 98-25030 · 1998-09-22 · airframe

Airworthiness Directives; McDonnell Douglas Model DC-9-10, -20, - 30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9 and C-9 (military) series airplanes, that requires visual and eddy current inspections to detect cracking of the frame-to-longeron attachment area, the frame-to- skin shear clips at certain fuselage stations, and the fuselage bulkhead at the front spar of the engine pylon in the aft fuselage; and repair, if necessary. This AD also requires certain modifications which, when accomplished, will terminate the requirement for inspections. This amendment is prompted by reports indicating that fatigue cracking has occurred at those areas. The actions specified by this AD are intended to prevent such fatigue cracking, which could cause damage to adjacent structure and result in reduced structural integrity of the airplane.

Which aircraft AD 98-25030 applies to

MakesMcdonnell Douglas

ModelsC-9

certain

Whether AD 98-25030 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 98-25030 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.