Is AD 2005-25-10 a recurring Airworthiness Directive?

Yes — AD 2005-25-10 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2005-25-10

Q: Which aircraft does AD 2005-25-10 apply to?

AD 2005-25-10 applies to Dowty Propellers — models R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, R334/4-82-F/13, R321, R324, R333, R334. Serial/part conditions may narrow it to specific aircraft.

recurring

Official AD 2005-25-10 · FR doc 05-23826 · 2005-12-12 · propeller

Airworthiness Directives; Dowty Propellers Type R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, and R334/4-82-F/13 Propeller Assemblies

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for Dowty Propellers Type R321/4-82-F/8, R324/4-82-F/9, R333/4-82- F/12, and R334/4-82-F/13 propeller assemblies. That AD currently requires initial and repetitive ultrasonic inspections of propeller hubs, part number (P/N) 660709201. This AD requires the same initial and repetitive ultrasonic inspections, but makes some needed corrections. This AD results from comments received on AD 2005-20-12. We are issuing this AD to prevent propeller hub failure due to cracks in the hub, which could result in loss of control of the airplane.

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

Which aircraft AD 2005-25-10 applies to

MakesDowty Propellers

ModelsR321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, R334/4-82-F/13, R321, R324, R333, R334

Part-conditional — 660709201.

Applies to propeller assemblies with hub part number 660709201. R321/R324/R333 assemblies installed on, but not limited to, British Aerospace Regional Aircraft Jetstream 3101/3201, Fairchild Merlin IIIC, and Merlin IVC/Metro III airplanes; R334 assemblies installed on CASA 212 airplanes.

Whether AD 2005-25-10 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 2005-25-10 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.