Service difficulty report · Support · Cessna 208B

Difficulty date
January 5, 2004
Submitted
March 1, 2004
Operation
General aviation
Make and model
Cessna 208B
Engine
Pwa PT6A114A
Propeller
Hartzl HCB3M
Part
Support
Part number
26011895
Condition
Faulty
Location
Engine Mount
Part time
608 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(AUS) ENGINE SUPPORT HOUSING FOR AIR CONDITIONER DRIVE LEAKING OIL. INVESTIGATION FOUND THE SUPPORT HOUSING ALIGNMENT SPIGOT TO BE TOO LONG TO FIT INTO THE RECESS IN THE ENGINE MOUNT PAD. THESPIGOT BOTTOMS OUT ON THE SEAL CARRIER CAUSING A 0.33MM (0.013IN) GAP ON THE GASKET FLANGE. THE SPIGOT BOTTOMING ON THE PAD CAUSES EXCESSIVE WEAR ON THE DRIVE SHAFT SPLINES PN 2601267-2 AND THE INTERNAL SPLINES ON THE DRIVE GEAR PNO 3100450-01.

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