Airworthiness Directive 2005-18-12
one-timeAirworthiness Directives; Hartzell Propeller Inc. Propellers
What this AD requires
The FAA is adopting a new airworthiness directive (AD) for certain Hartzell Propeller Inc. propellers. This AD requires inspecting the propeller blades and other critical propeller parts for corrosion and mechanical damage. This AD results from two events where a "Z- shank" blade failed and separated and the results of teardown inspections that detected corrosion in the blade bore. We are issuing this AD to detect corrosion and mechanical damage that can cause failure of a propeller, which could result in loss of control of the airplane.
Which aircraft AD 2005-18-12 applies to
Applies to propeller assemblies with hub model series listed in AD Table 1 (HC-92W, BHC-92W, HC-92Z, BHC-92Z, HC-B3P, HC-B3R, HC-B3W, BHC-B3W, HA-B3Z, HC-B3Z hub model series). Installed on, but not limited to, numerous aircraft listed in AD Table 2 (partial: Aermacchi AM-3C; Aero Commander 560/680 series; Aerospatiale 733; Aerostar 360; Beech 18/35/45/50/65/70/95 series; Cessna 172/175/190/195/421/A185E/A185F seaplanes/T50; De Havilland DHC-2; Dornier DO28D; Found Brothers 100/FBA-2C; Goodyear GZ20; Grumman G44/G21A; Helio H-250/H-295/H-395/H-500; ICA IAR-831), table truncated in source text.
Whether AD 2005-18-12 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:
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.