Service difficulty report · Diode · Boeing 757222

Difficulty date
February 26, 2012
Submitted
March 29, 2012
Operation
Air carrier
Aircraft
N561UA
Make and model
Boeing 757222
Aircraft serial
26661
Aircraft time
64,445 hours, 23,688 cycles
Engine
Pwa PW2037
Part
Diode
Part number
69B408003
Condition
Faulty
Location
Fuel System
Stage of operation
NR
How discovered
O
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

LEFT CENTER TANK PUMP FAILS TASK. PRESS LIGHT COMES ON WHEN SWITCH IS ACTIVATED BUT PUMP SHUTS OFF AT 15 SEC. SUSPECT R10608 DIODE (PCN561-1804 OSTF M3864) IS ALLOWING GRD OF TEST SWITCH TO TURN ON LIGHT.