Service difficulty report · Pressure Switch · Boeing 767322

Difficulty date
March 16, 2011
Submitted
March 24, 2011
Operation
Air carrier
Aircraft
N670UA
Make and model
Boeing 767322
Aircraft serial
29240
Aircraft time
41,488 hours, 10,927 cycles
Engine
Pwa PW4056
Engine time
51,003 hours, 9,516 cycles
Part
Pressure Switch
Part number
21SN04461
Part serial
127
Condition
Failed
Location
Engine Oil Press
Part time
51,003 hours, 9,516 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

LT ENGINE OIL FILTER MSG. REPLACE DIFFERENTIAL PRESSURE SWITCH PER AMM WITHIN 100 HOURS. REPLACED NR 1 ENG OIL DIFFERENTIAL PRESURE SWITCH PER MM. IDLE RUN OPS & LEAK CHECKED GOOD. NO LEFT ENG OIL PRESS MSG.