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Airworthiness Directive 95-25-10

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Official AD 95-25-10 · FR doc 95-31151 · 1995-12-22 · airframe

Airworthiness Directives; Cessna Model 441, 500, 550, and 560 Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain Cessna Model 441, 500, 550, and 560 series airplanes, that requires replacement of outflow/safety valves with serviceable valves. This amendment is prompted by a report of cracking and subsequent failure of outflow safety valves in the pressurization system. The actions specified by this AD are intended to prevent such cracking and subsequent failure of the outflow/safety valves, which could result in rapid decompression of the airplane.

Which aircraft AD 95-25-10 applies to

MakesCessna
Models441, 500, 550, 560

Requires replacement of the pressurization outflow/safety valve to prevent cracking and rapid decompression, per Allied Signal Aerospace Service Bulletins 103576-21-4054 (Model 441 series), 103576-21-4056 (Model 500 and 550 series), and 103648-21-4055 (Model 560 series), all dated January 30, 1995; also prohibits installing an unserviceable valve identified by part/serial number in those SBs.

Whether AD 95-25-10 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 95-25-10 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.