SDR UALA2011110906101

Service difficulty report · Receptacle · Boeing 757222

Difficulty date: November 8, 2011
Submitted: December 8, 2011
Operation: Air carrier
Aircraft: N598UA
Make and model: Boeing 757222
Aircraft serial: 28751
Aircraft time: 50,450 hours, 14,131 cycles
Engine: Pwa PW2037
System (JASC): 2897 · Fuel System Wiring
Part: Receptacle
Condition: Dirty
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 MAIN FUEL QTY BLANK AT LAX. TROUBLESHOOTING NEW FUEL QTY PROCESSOR, NO HELP. NEW FUEL QTY PROCESSOR INSTALLED BY MECHANIC. NO HELP. PROCESSOR SHOWS PRESENT FAULTS (LM HI Z SHIELD OPEN AT SPAR G01). ACP TROUBLESHOOTING PER MM. RANG OUT WIRES FROM FUEL QTY PROCESSOR M121 RACK CONN D2440C PINS A1, B2, C3 TO LEFT MAIN TANK FROM SPAR CONNECTOR D6880. ALL CHECKS SATISFACTORY. NEED TO CHECK WIRING IN TANK. CLEANED SPAR CONNECTOR RECEPTACLE AND PLUG. SELF TEST SHOWS NO FAULTS.