Service difficulty report · Bolt · Boeing 757222

Difficulty date
August 23, 2009
Submitted
August 24, 2009
Operation
Air carrier
Aircraft
N590UA
Make and model
Boeing 757222
Aircraft serial
28708
Aircraft time
46,598 hours, 12,927 cycles
Engine
Pwa PW2037
Engine time
65,796 hours, 21,111 cycles
Part
Bolt
Condition
Sheared
Location
Engine Gearbox
Part time
65,796 hours, 21,111 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

NR 2 ENGINE DURING SCAVENGE OIL PUMP REPLACEMENT FOUND DRIVE GEARS IN MAIN GEAR BOX BEARING BOLTS SHEARED, INTERNAL DAMAGE. OIL SCAVENGE PUMP REMOVED. REPLACED NR 2 ENGINE.