Is AD 2006-18-15 a recurring Airworthiness Directive?

Yes — AD 2006-18-15 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2006-18-15 apply to?

AD 2006-18-15 applies to Hartzell Propeller Inc. — models ( )HC-( )2Y( )-( ) series, HC-2Y. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2006-18-15

recurring

Official AD 2006-18-15 · FR doc E6-14691 · 2006-09-08 · propeller

Airworthiness Directives; Hartzell Propeller Inc. ( )HC-( )2Y( )-( ) Series Propellers

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. ( )HC-( )2Y( )-( ) series propellers with non- suffix serial number (SN) propeller hubs installed on Lycoming O-, IO-, LO-, and AEIO-360 series reciprocating engines. This AD requires initial and repetitive eddy current inspections (ECI) of the front cylinder half of the propeller hub for cracks and removing cracked hubs from service before further flight. In addition, this AD allows installation of an improved design propeller hub (suffix SN "A" or "B") as terminating action to the repetitive ECI. This AD results from a report of a propeller blade separating from a propeller hub. We are issuing this AD to prevent failure of the propeller hub causing blade separation and subsequent loss of airplane control.

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 2006-18-15 applies to

MakesHartzell Propeller Inc.

Models( )HC-( )2Y( )-( ) series, HC-2Y

Applies to Hartzell ( )HC-( )2Y( )-( ) series propellers with non-suffix serial number propeller hubs, when installed on Lycoming O-360/IO-360/LO-360/AEIO-360 series reciprocating engines. These engine/propeller combinations could be installed on, but not limited to, numerous airplane models listed in the AD (e.g., Piper PA-24 Comanche, Mooney M-20 series, Cessna Cardinal 177, Piper PA-44 Seminole, Beech Duchess 76, Aviat Husky); list truncated in source text.

Whether AD 2006-18-15 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 2006-18-15 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.