Service difficulty report · Aoa · Airbus A320232

Difficulty date
August 23, 2024
Submitted
September 10, 2025
Operation
Air carrier
Aircraft
N429UA
Make and model
Airbus A320232
Aircraft serial
539
Aircraft time
93,274 hours, 37,674 cycles
Part
Aoa
Part number
C16291AB
Part serial
Q0674706490
Condition
Faulty
Location
Zone 100
Part time
2,990 hours, 1,453 cycles
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

EG HAS BEEN NOTIFIED BY THE FAA THAT THIS AIRCAFT IS REPORTING HIGHER THAN EXPECTED RVSM ALTITUDES EG IS REQUESTING TO ACCOMPLIS H (ASE) ALTIMETRY SYSTEM ERROR CHK. 1. PERFORM AIRBUS SRM 51-11 -00 SECTION 4,A AND SRM 53-00-11 SECTION 4.B SKIN WAVINESS. 2. PERFORM AMM 34-11-16 INSPECTION OF STATIC PORTS. 3. PERFORM AMM 34-13-00-720-010-A. FUNCTIONAL CHECK TEST OF ADM ACCURACY FOR O NLY STATIC ADM'S,19FP4,19FP5,19FP6,19FP7 & 19FP8. ACP IDT VERIFICATION OF QUICK DISCONNECTS REATTACHMENT, INSPECTION WITNESS OF SYSTEM LEAK TEST IS STILL REQUIRED. IDT PER GMM 09-10-05. CONNECTED TR220 TRANSPONDER TESTER AND VERIFIED CAPTIANS AND FIRST OFFICERS ALTITUDE MATCHED TRANSPONDER #1 AND #2 READINGS ACCOMPLISHED FUNCTIONAL TEST OF THE ADM ACCURACY REF AMM 34-13-00-720-010-A OF THE PRIMARY STATIC AND PITOT SYSTEMS AND THEY ARE WITHIN LIMITS. ADM ACCURACY OF THE STANDBY SYSTEM STILL NEEDS TO BE ACCOMPLISHED. REPLACED AOA SENSOR 3FP2 REF AMM 34-11-19-400-001-A. OPS CHECKED BOTH AOAS 3FP1 AND 3FP2 CHECKS GOOD.REPLACED MISSING FOAM INSULATION UNDER STATIC ADM 19FP5 & 19FP7 REF AMM 34-11-17-400-002-A. ADD EMP:U039985 3FP1 AOA SENSOR WAS ALSO REPLACED, SENSOR, AOA OFF 31-3410-9-0001 4904 ON 9082 SENSOR, SKIN WAIVINESS,STATIC PROBE PORTS,PITOT PROBES,TOTAL AIR TEMPERATURE PROBES AND ANGLE OF ATTACK PROBES.JACOBS DENLM. COMPLETED SKIN WAVINESS INSPECTION OF AOA & PITOT PROBES REF STEPS SKIN WAVINESS WITHIN LIMITS, AND NO DAMAGE NOTED NOR DOUBLER REPAIRS PRESENT IN AREAS R1 OR R2

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