Service difficulty report · O-Ring · Dhav DHC8311

Difficulty date
November 11, 2002
Submitted
November 19, 2002
Operation
Air carrier
Aircraft
N804SA
Make and model
Dhav DHC8311
Aircraft serial
375
Aircraft time
19,322 hours, 17,004 cycles
Engine
Pwa PW123
Engine time
15,629 hours, 13,973 cycles
Part
O-Ring
Part number
ST3367009
Condition
Deteriorated
Location
Nr 2 Engine
Part time
1,345 hours, 1,688 cycles
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

DURING MAINTENANCE WALK AROUND, FUEL WAS OBSERVED LEAKING FROM THE NUMBER 2 NACELLE. WET MOTORING THE ENGINE SHOWED THE FUEL TO BE COMING FROM THE FUEL NOZZLE TRANSFER TUBES. UPON REMOVAL OF THE TRANSFER TUBES THE PRIMARY AND SECONDARY O-RINGS WERE FOUND TO BE SEVERELY DETERIORATED. REPLACED O-RINGS.