MANUFACTURER: Dowty Propellers Type
R321/4-82-F/8, R324/4-82-F/9, R333/4-82-F/12, and R334/4-82-F/13
Propeller Assemblies SUBJECT: AD 2005-25-10R1 ACTION: Final rule.
SUMMARY: The FAA is revising an existing
airworthiness directive (AD) for the products listed above. That AD
currently requires initial and repetitive ultrasonic inspections of
propeller hubs, part number (P/N) 660709201. This new AD requires
introducing a new hub assembly P/N as an optional terminating
action to the repetitive hub inspections. This AD was prompted by
the need to introduce an optional terminating action for the
repetitive inspections. The FAA is issuing this AD to prevent
propeller hub failure due to cracks in the hub, which could result
in loss of control of the airplane.