Service difficulty report · Aoa · Airbus A320232

Difficulty date
April 24, 2025
Submitted
April 25, 2025
Operation
Air carrier
Aircraft
N454UA
Make and model
Airbus A320232
Aircraft serial
1104
Aircraft time
78,848 hours, 32,171 cycles
Part
Aoa
Part number
C16291AB
Part serial
5179
Condition
Faulted
Location
Nr 1
Part time
20,342 hours, 9,379 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

GRAPHIC DISPLAY OF VLS ON ND IS 5 KNOTS HIGHER THAN FMGC. ND SHO WS VLS SAME AS APP SPEED CREW STATED DISCREPANCY WAS VISIBLE IN BOTH PFDS. FOLLOWED TSM 22-66-00-810-889-A LAST LEG CLASS 3 FAULTS DISPLAYS AOA SENSOR1 ( 3FP1 )", ADR1 TEST SHOWS MSG AOA SENSOR1 ( 3FP1 )" AS WELL. 26VAC VOLTS PRESENT ON TERMINALS A/A,M. REMOVED AOA1 "3FP1" PER AMM TASK 34-11-19-000-001-A AND TSM 34-11-00-810-829-A. NEW AOA, SEAL AND OLD HARWARE LOCATED IN THE COCKPIT ALONGSIDE OLD PART. SCREW SEIZED AT 7 O'CLOCK POS NEEDS TO BE DRILLED OUT. REMOVED UPPER SIDEWALL PANEL AT ROW 2AB TO GAIN ACCESS TO BACKSIDE OF AOA PROBE IAW AMM TASK 25-23-43-000-001-A. PANEL AND HARDWARE IN FIRST CLASS CABIN. REMOVED DOMED NUTPLATES AT 7 & 4 OCLOCK POSITIONS. DURING INSTALLATION OF AOA PROBE IAW ECRA 3411-01201 REV A, FOUND NUTPLATES AT 12, 10, & 8 OCLOCK POSITIONS BAD. REMOVED UNSERVICEABLE DOMED NUTPLATES. SERVICEABLE AOA PROBE STILL PARTIALLY ATTACHED TO AIRFRAME. UNSERVICEABLE AOA PROBE STORED IN BOX AND INSIDE FLIGHT DECK. ACCOMPLISHED PERMANENT REPAIR OF AOA SENSOR #1 (3FP1) DOME NUT REF. EC/RA 3411-01201. AOA 1 SENSOR INSTALLATION TEST PASSED. SEALANT B1/2 APPLIED AT APPROXIMATELY 11:00AM, VERIFY TACK FREE AT 1:00PM.

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