Service difficulty report · Transmitter · Boeing 757222

Difficulty date
January 8, 2013
Submitted
January 9, 2013
Operation
Air carrier
Aircraft
N531UA
Make and model
Boeing 757222
Aircraft serial
25042
Aircraft time
62,456 hours, 23,545 cycles
Part
Transmitter
Part number
7710915
Part serial
0218
Condition
Inoperative
Location
Zone 500
Part time
1,627 hours, 923 cycles
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
E

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

What was found

OIL QUANITY ON LT ENGINE DROPPED TO 0 FOLLOWED BY THE OIL TEMP INCREASING TOWARD LIMITS. PERFORMED LT ENG SHUTDOWN CHECKLIST. FOUND LT ENG OIL QTY TRANSMITTER GROUND WIRE BROKEN (DMI 01-05-01-B-07). RAN FIM 79-34, FT 802, FAULT FOR OIL TEMP BLOCK 23. R & R LT ENG OIL TEMP THERMOCOUPLE PROBE, THERMOCOUPLE OPS CK GOOD. ACCOMPLISHED ENGINE WINDMILL INSP ON LT ENG, NO EXTERNAL LEAKS NOTED, NO CHIPS NOTED, NO OIL CONSUMPTION NOTED. LP 13022 & 13023: NR 1 ENG OIL TRANSMITTER IS LOOSE. REMOVED RED LT ENG OIL QTY TRANSMITTER, OP'S CK GOOD. REF DMI 01-05-01-B-07, REPAIRED GROUND WIRE BY RE-TERMINATING RING TERMINAL (AT OIL QTY TRANSMITTER) OPS CK OF OIL QTY SYS GOOD.