Airworthiness Directive 01-31328
one-timeAirworthiness Directives; Hamilton Sundstrand Model 247F Propellers
What this AD requires
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Hamilton Sundstrand model 247F propellers. This action requires a one-time rework of certain model 247F propellers by removing all four propeller blades from service, replacing those blades with serviceable propeller blades, and marking the propeller with a new part number. This amendment is prompted by nine reports of the blades partially slipping at the bond joint between the blade tulip and the composite blade airfoil interface. The actions specified in this AD are intended to prevent the loss of a propeller blade, which may result in loss of airplane control.
Which aircraft AD 01-31328 applies to
Applies to Hamilton Sundstrand propeller blades P/N R810640-1, R810640-2, and R810640-3 (to be removed and replaced), and propellers P/N 810610-1 (re-marked as 810610-2) and P/N 815550-1 (re-marked as 815550-2), per Hamilton Sundstrand SB 247F-61-37, Revision 2, dated September 7, 2001; blade separation prevention.
Whether AD 01-31328 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.