Federal Register of Legislation
Propellers - Variable Pitch - Hartzell
AD/PHZL/60 Amdt 4
Three Bladed 'Y' Shank Aluminium Hubs 13/94
Applicability: All HC-( )3Y( )-( ) propellers with the model designations and serial number range with pre 1983 hubs listed below installed on any agricultural aircraft with any engine, or installed on any aircraft fitted with Textron Lycoming TIO-540 or LTIO-540 series engines, or IO-540 series engines that have a turbocharger.
Hub Model Serial Number Range
PHC-C3YF-1R( ) EE1 through EE1461
PHC-J3YF-1R( ) FP1 through FP37
PHC-L3YF-1R( ) FD1 through FD7
HC-C3YF-1R( ) EC1 through EC1020
HC-C3YK-1( ) CT1 through CT101
HC-C3YK-1R( ) or HC-C3YR-1R( ) DY1 through DY1897
HC-C3YK-2( ) or HC-C3YR-2( ) CK1 through CK3510
HC-C3YK-4( ) or HC-C3YR-4( ) EL1 through EL67
HC-E3YK-1( ) or HC-E3YR-1( ) FM1 through FM487
HC-E3YK-2( ) or HC-E3YR-2( ) DF1 through DF79
HC-E3YK-2A( ) or HC-E3YR-2A( ) DJ1 through DJ7787
HC-F3YK-2( ) or HC-F3YR-2( ) DA1 through DA1586
HC-F3YK-1( ) or HC-F3YR-1( ) DB1 through DB137
HC-I3YK-2( ) or HC-I3YR-2( ) FD1 through FS32
The known affected propellers are generally installed on but not limited to the following aircraft.
Agricultural Aircraft
Fletcher FU24-950
Cessna A188 Agwagon modified by STC SA895SO
Piper PA-36-285 and PA-36-300 (three bladed propellers only) PA-36-375
PA-36 Pawnee modified by STC SA3952WE Transavia Airtruk model PL-12/T-300 Skyfarmer Aircraft with Textron Lycoming (L)TIO-540 and Turbocharged IO-540 series engines
Cessna 310 and 320 modified by Riley STC SA2082WE Gulfstream 700 (formerly Rockwell 700, Fuji FA-300-12) Helio H-700 Piper PA-23-250, PA-E23-250 (with TIO-540 only)
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