SDR UALA2011012400382

Service difficulty report · Proximity Sensor · Airbus A320232

Difficulty date: January 24, 2011
Submitted: January 25, 2011
Operation: Air carrier
Aircraft: N425UA
Make and model: Airbus A320232
Aircraft serial: 508
Aircraft time: 54,844 hours, 20,502 cycles
Engine: Iae V2527A5
System (JASC): 3260 · Landing Gear Position and Warning
Part: Proximity Sensor
Condition: False Indication
Location: Mlg
Stage of operation: CR
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

LANDING GEAR NOT UPLOCKED ON ECAM. ACCOMPLISHED TSM 32-31-00- 810-865 UP TO TASK 5. NO OBVIOUS DEFECTS FOUND. CHECKED RESISTANCE ON SENSORS 12GA, 13GA, 30GA AND 31GA. ALL READ 10.6 OHMS AT APPROX 10 DEGREES F. SLAVED IN NEW LGCIU 1 AND LGCIU 2, NO HELP. REINSTALLED ORIGINAL LGCIU'S IAW MM. INSTALLED NEW FAC 1, NO HELP. REINSTALLED ORIGINAL FAC IAW MM. ACCOMPLISHED TSM 32-31-00- 810-865. REPLACED UPLOCK PROX SENSORS 12GA AND 13GA. OPERATED GEAR 8 TIMES, OPS NORMAL.

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