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Airworthiness Directive 97-26-16

recurring
Official AD 97-26-16 · FR doc 97-32993 · 1997-12-19 · airframe

Airworthiness Directives; Cessna Aircraft Company Models 402C and 414A Airplanes

What this AD requires

This amendment supersedes Airworthiness Directive (AD) 85-13- 03 R2, which currently requires repetitively inspecting the engine mount beams for cracks on certain Cessna Aircraft Company (Cessna) Models 402C and 414A airplanes, and replacing any cracked beams. This AD requires incorporating engine mount kits that will eliminate the need for the repetitive inspection requirement of AD 85-13-03 R2. This AD results from the Federal Aviation Administration's policy on aging commuter-class aircraft, which is to eliminate or, in certain instances, reduce the number of certain repetitive short-interval inspections when improved parts or modifications are available. The actions specified by this AD are intended to prevent failure of the engine mount beam caused by fatigue cracks, which could result in loss of the engine with consequent loss of the airplane.

Repetitive inspection. Re-inspect every 9600 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 97-26-16 applies to

MakesCessna
Models402C, 414A, 402, 414
Serial-conditional — narrows to serials 402C0001–402C0468, 402C0469–402C0808, 414A0001–414A0646, 414A0647–414A1206.
Part-conditional — SK414-17, SK414-19-1, SK414-19-2, SK414-19-3, SK414-19-4, SK414-19-5.

Applies to Model 402C and 414A airplanes; required kit variant depends on serial number range, whether Cessna Kit SK414-17 is already incorporated, and whether the airplane is equipped with propeller unfeathering accumulators. Addresses fatigue cracking of the engine mount beam.

Whether AD 97-26-16 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 97-26-16 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.