Service difficulty report · Switch · Boeing 757222

Difficulty date
March 21, 2002
Submitted
April 2, 2002
Operation
Air carrier
Aircraft
N557UA
Make and model
Boeing 757222
Aircraft serial
26653
Aircraft time
34,339 hours, 12,633 cycles
Engine
Pwa PW2037
Engine time
35,128 hours, 12,857 cycles
Part
Switch
Part number
21SN04404
Condition
Faulty
Location
Rt Engine
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

RIGHT ENGINE OIL FILTER EICAS MSG AND RIGHT OIL FILTER STATUS MESSAGE APPEARED IN FLIGHT. EICAS MESSAGE EXTINGUISHED AFTER ONE MINUTE. OIL FILTER & BYPASS SWITCH REPLACED. OIL FILTER AND CHIP DETECTORS CHECKED CLEAN. OIL FILTER BYPASS SWITCH TESTED AND FOUND IT DREW EXCESSIVE CURRENT. SUSPECT A SHORT IN THE COIL. SWITCH SENT TO THE OEM FOR REPAIR.