Service difficulty report · Pressure Switch · Boeing 767322

Difficulty date
December 31, 2009
Submitted
December 31, 2009
Operation
Air carrier
Aircraft
N647UA
Make and model
Boeing 767322
Aircraft serial
25284
Aircraft time
76,751 hours, 12,465 cycles
Engine
Pwa PW4060
Part
Pressure Switch
Part number
38760483
Part serial
375
Condition
Failed
Location
Generator
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

APU FAULTED AND AUTO SHUTDOWN TWICE. APU IS INOPERATIVE. REPLACED GENERATOR FILTER DIFFERENTIAL PRESSURE SWITCH. OP CHECKS NORMAL.