Is AD 2008-13-28 a recurring Airworthiness Directive?

Yes — AD 2008-13-28 requires a repetitive inspection every 50 hours or 12 months. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2008-13-28 apply to?

AD 2008-13-28 applies to Hartzell Propeller Inc. — models HC-2Y, HC-3Y. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2008-13-28

recurring

Official AD 2008-13-28 · FR doc E8-14312 · 2008-07-02 · propeller

Airworthiness Directives; Hartzell Propeller Inc. ( )HC-( )(2,3)Y(K,R)-2 Two- and Three-Bladed Compact Series Propellers

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. left-hand rotating ( )HC-( )(2,3)Y(K,R)-2 two- and three-bladed, aluminum hub, "compact" series propellers, with hubs having a non-suffix serial number, and lubrication holes located on the shoulder of the hub blade socket. These propellers are installed on Lycoming Engines LIO-360 series and LO-360 series reciprocating engines installed on Piper Aircraft, Inc. Seneca PA-34-200 and Seminole PA-44-180, and Hawker Beechcraft Corporation Model 76 Duchess, airplanes. This AD requires initial and repetitive eddy current inspections (ECI), of the area around the lubrication holes of the hub blade sockets. This AD results from four reports of propeller hub cracks, including two in-flight blade separation events. We are issuing this AD to prevent failure of the propeller hub, which could result in blade separation and loss of control of the airplane.

Repetitive inspection. Re-inspect every 50 hours or 12 months. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2008-13-28 applies to

MakesHartzell Propeller Inc.

ModelsHC-2Y, HC-3Y

Left-hand rotating ( )HC-( )(2,3)Y(K,R)-2 two- and three-bladed, aluminum hub, 'compact' series propellers, with hubs having a non-suffix serial number and lubrication holes located on the shoulder of the hub blade socket. Installed on Lycoming Engines LIO-360 and LO-360 series reciprocating engines, on Piper Seneca PA-34-200, Seminole PA-44-180, and Hawker Beechcraft Model 76 Duchess airplanes. Applies regardless of whether additional model-number letters are present or absent.

Whether AD 2008-13-28 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 2008-13-28 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.