Service difficulty report · Control Unit · Airbus A320232

Difficulty date
September 25, 2023
Submitted
September 27, 2023
Operation
Air carrier
Aircraft
N416UA
Make and model
Airbus A320232
Aircraft serial
479
Aircraft time
91,940 hours, 36,161 cycles
Part
Control Unit
Part number
801780488013
Part serial
2539842956
Condition
Faulty
Location
90vu, Fr9
Part time
791,934 hours, 736,156 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

SHOCK ABSORBER FAULT DISPLAYED ON UPPER ECAM SCREEN - L-G ALSO HAVE AUTO FLT AP OFF AUTO FLT A/THR OFF L/G SHOCK ABSORBER CONTACT TOMC FOR UNLOCK UNLOCK TO CLEAR. COMPLIED WITH RII.INSPECTED SENSOR INSTALLATION AND OBSERVED NOSE GEAR SWING. REFERENCE AMM 32-31-73. REPLACED NLG EXT PROX SENSOR PER AMM 32-31-73, PERFORMED GEAR SWING ALL INDICATIONS NORMAL. REPLACED #1 LGCIU REF TASK 32-31-71-000-001-A. ACCOMPLISHED TSM 32-31-00-810-815-A. CHECKED WIRING FROM 1300VC TO 24GA PROX SENSOR. NO SHORTS AND CONTINUITY CHECK WAS GOOD. 24GA SENSOR WAS REPLACED AND LGCIU 1 WAS REPLACED PER THE ABOVE UPDATES. NLG WAS SWUNG AND ALL FAULTS CLEARED. ALL TEST PASSED.

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