AD NUMBER: 2005-24-09
SUBJECT: Airworthiness Directive 2005-24-09
FAA is adopting a new airworthiness directive (AD) for McCauley
Propeller Systems propeller assemblies, models 2D34C53/74E-X;
D2A34C58/90AT-X; 3AF32C87/82NC-X;D3AF32C87/82NC-X; D3A32C88/82NC-X;
D3A32C90/82NC-X; and 3AF34C92/90LF-X. This AD requires, within 10
flight hours or 10 days after the effective date of this AD,
whichever occurs first, removing certain serial number propeller
hubs from service.
This AD results from a report by the manufacturer that they
manufactured and released 40 propeller hubs with improperly
machined socket retention threads.
We are issuing this AD to prevent cracked propeller hubs, which
could cause failure of the propeller hub, blade separation, and
loss of control of the airplane.