Is AD 97-1437 a recurring Airworthiness Directive?

No — AD 97-1437 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 97-1437 apply to?

AD 97-1437 applies to Mcdonnell Douglas — models C-9, DC-9-80, MD-88. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 97-1437

one-time

AD 97-1437 · 1997-01-28 · airframe

Airworthiness Directives; McDonnell Douglas Model DC-9, DC-9-80 and C-9 (Military) Series Airplanes, and Model MD-88 Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model DC-9, DC-9-80 and C-9 (military) series airplanes, and Model MD-88 airplanes It requires either the installation of external protective doublers between the outboard flight spoiler actuators and the aft spar webs of the wings, or replacement of the pistons of the outboard flight spoiler actuators with improved pistons. This amendment is prompted by reports of failure of the piston of the outboard flight spoiler actuator due to fatigue at the clevis end of the upper lug mounting hole of the piston. The actions specified by this AD are intended to prevent such failure of the piston and the consequent puncturing of the aft spar web, which could result in fuel leakage and reduced structural integrity of the wings.

Which aircraft AD 97-1437 applies to

MakesMcdonnell Douglas

ModelsC-9, DC-9-80, MD-88

certain

Whether AD 97-1437 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 97-1437 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.