Is AD 2004-12-10 a recurring Airworthiness Directive?

No — AD 2004-12-10 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2004-12-10 apply to?

AD 2004-12-10 applies to Hamilton Sundstrand Corporation — models 568F. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2004-12-10

one-time

Official AD 2004-12-10 · FR doc 04-13145 · 2004-06-14 · propeller

Airworthiness Directives; Hamilton Sundstrand Corporation (Formerly Hamilton Standard Division) Model 568F Propellers

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain serial-numbered propeller blades installed in Hamilton Sundstrand Corporation (formerly Hamilton Standard Division) 568F propellers. This AD requires replacement of propeller blades, part numbers (P/Ns) R815505-3 and R815505-4 that have a serial number (SN) of FR1699 to FR20021010, with serviceable blades. This AD results from reports of these composite propeller blades found at inspection, with random areas of missing adhesive under the compression wrap, which exposed the steel tulip part of the blade. We are issuing this AD to prevent propeller blade failure due to corrosion-induced fatigue, which could result in blade separation and possible loss of airplane control.

Which aircraft AD 2004-12-10 applies to

MakesHamilton Sundstrand Corporation

Models568F

Serial-conditional — narrows to serials FR1699–FR2625, FR20010610–FR20021010.

Part-conditional — R815505-3, R815505-4.

Applies when composite propeller blades P/N R815505-3 or R815505-4, within the listed serial-number ranges (877 blades SN FR1699-FR2625; 713 blades SN FR20010610-FR20021010), are installed. Blades installed on, but not limited to, Aerospatiale ATR42-400, ATR42-500, ATR72-212, and ATR72-500 airplanes.

Whether AD 2004-12-10 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 2004-12-10 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.