Is AD 98-01-01 a recurring Airworthiness Directive?

No — AD 98-01-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-01-01 apply to?

AD 98-01-01 applies to Cessna. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-01-01

one-time

Official AD 98-01-01 · FR doc 98-1297 · 1998-01-23 · airframe

Airworthiness Directives; Cessna Aircraft Company Models 172R and 182S Airplanes

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 98-01-01, which was sent previously to all known U.S. owners and operators of certain Cessna Aircraft Company (Cessna) Models 172R and 182S airplanes. This AD requires fabricating and installing placards to prohibit operation in instrument flight rules (IFR) conditions and use of the alternate static air source; inspecting the alternate static air source valve to assure that the alternate static air source port is not restricted by the identification placard and to assure that the valve body does not separate from the valve flange; and reworking or replacing as necessary. The AD was the result of reports of improper installation of the identification placard on the alternate static air source. The actions specified by this AD are intended to prevent erroneous indications from the altimeter, airspeed, and vertical speed indicators, which could cause the pilot to react to incorrect flight information and possibly result in loss of control of the airplane.

Which aircraft AD 98-01-01 applies to

MakesCessna

Prevents erroneous altimeter/airspeed/vertical speed indications from a restricted or separating alternate static air source valve; requires cockpit placards (IFR operation prohibited, alternate static air source use prohibited) and inspection/rework/replacement per Cessna Service Bulletin No. SB97-34-02, Revision 1, dated December 22, 1997. Text does not name the specific Cessna model this applies to.

Whether AD 98-01-01 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 98-01-01 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.