Is AD 98-12-09 a recurring Airworthiness Directive?

No — AD 98-12-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-12-09 apply to?

AD 98-12-09 applies to Alliedsignal — models TPE331-8, TPE331-10, TPE331-11, TPE331-12, TPE331. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-12-09

one-time

Official AD 98-12-09 · FR doc 98-15089 · 1998-06-08 · turboprop engine

Airworthiness Directives; AlliedSignal Inc. Model TPE331 Series Turboprop Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to AlliedSignal Inc. Model TPE331 series turboprop engines, that requires removal of suspect fuel manifold assemblies and replacement with serviceable assemblies. This amendment is prompted by an FAA investigation into Hoses Unlimited's repairs of TPE331 fuel manifolds, which were not approved by the FAA. The actions specified by this AD are intended to prevent fuel leakage at the fuel manifold fittings, resulting in fuel spraying on hot turbine components, which could result in an engine fire.

Which aircraft AD 98-12-09 applies to

MakesAlliedsignal

ModelsTPE331-8, TPE331-10, TPE331-11, TPE331-12, TPE331

Part-conditional — 3102469-1, 3102469-2.

Applies only to engines with fuel manifold, Part Number 3102469-1 or -2, that was repaired by Hoses Unlimited, Inc. prior to November 20, 1995. Installed on but not limited to Ayres S2R-G10; Cessna Model 441; Construcciones Aeronauticas, S.A. (CASA) C-212 series; Dornier 228 series; Fairchild SA226 and SA227 series; Jetstream 3101 and 3201 series; Mitsubishi MU-2B series (MU-2 series); and Twin Commander Aircraft Corp. Models 695 and 695A aircraft.

Whether AD 98-12-09 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 98-12-09 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.