Is AD 99-26-19 a recurring Airworthiness Directive?

Yes — AD 99-26-19 requires a repetitive inspection every 500 hours or 24 months. Next-due depends on the aircraft's time in service.

Which aircraft does AD 99-26-19 apply to?

AD 99-26-19 applies to Piper. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-26-19

recurring

Official AD 99-26-19 · FR doc 99-33166 · 1999-12-28 · airframe

Airworthiness Directives; The New Piper Aircraft, Inc. J-2 Series Airplanes That Are Equipped With Wing Lift Struts

What this AD requires

This amendment adopts a new airworthiness directive (AD) that applies to certain The New Piper Aircraft, Inc. (Piper) J-2 series airplanes equipped with wing lift struts. This AD requires repetitively inspecting the wing lift struts for dents and corrosion and the wing lift strut forks for cracks; replacing any strut found with corrosion or dents, or forks with cracks; and repetitively replacing the wing lift strut forks. This AD also requires incorporating a ``NO STEP'' placard on the lift strut. This AD is the result of the Federal Aviation Administration (FAA) inadvertently omitting the J-2 series airplanes from the applicability of AD 99-01-05. The actions specified by this AD are intended to prevent in-flight separation of the wing from the airplane caused by wing lift struts with dents or corrosion or wing lift forks with cracks, which could result in loss of control of the airplane.

Repetitive inspection. Re-inspect every 500 hours or 24 months. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 99-26-19 applies to

MakesPiper

Extracted text begins at the standard 'preceding applicability provision' boilerplate; the AD's actual airplane model list precedes this excerpt and was not captured by extraction. Prevents in-flight separation of the wing from the airplane caused by wing lift struts with dents or corrosion, or wing lift forks with cracks. Requires removal and inspection (visual or Level 2 NDT per the AD Appendix) of wing lift struts per Piper Service Bulletin (SB) No. 528D dated October 19, 1990, at intervals not exceeding 24 calendar months; struts with dents/corrosion or forks with cracks require installation of an OEM replacement part (part number cut off in source text) or other corrective action. References prior AD 93-10-06.

Whether AD 99-26-19 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 99-26-19 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.