Service difficulty report · Uplock · Airbus A319131

Difficulty date
October 4, 2023
Submitted
October 6, 2023
Operation
Air carrier
Aircraft
N839UA
Make and model
Airbus A319131
Aircraft serial
1507
Aircraft time
67,608 hours, 29,900 cycles
Part
Uplock
Part number
C247301003
Part serial
H1786
Condition
Faulted
Location
Nlg Door
Part time
6 hours, 4 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

NOSE WHEEL DOOR DIDNOT FULLY RETRACTWITH GEAR RAISED.CYCLED GEAR 2 ADDITIONAL FLAGGED AS SDR ACCOMPLISHED FUNCTIONAL TEST OF THE NORMAL EXTENSION AND RETRACTION OF THE NOSE LAND GEAR REF MM32-31-00-720-003-A. WHEN NOSE GEAR IS EXTENDED THE NOSE GEAR DOOR CLOSED INDICATION IS GREEN AND THE DOORS ARE CLOSED. WHEN THE NOSE LANDING GEAR IS RETRACTED, THE NOSE GEAR DOOR INDICATE AMBER INTRANSIT AND THE GEAR DOORS ARE CLOSED TIGHT. PHOTO IS WHEN THE GEAR IS RETRACTED AND THE GEAR DOORS ARE CLOSED. REPLACED NLG DOOR OPEN PROX SENSORS 36GA, 37GA, 38GA, 39GA REF AMM 32-31-73-000-005-A/32-31-73-400-005-A. ACP ADJUSTMENT OF PROX SENSORS REF AMM 32-31-73-200-002-A. NLG PROX SENSORS REQ BITE CHECK REF AMM 32-69-00-740-001-A. REMOVED AND REPLACED NOSE LANDING GEAR DOOR UPLOCK ASSY REF AMM 32-31-14-400-001-A UP TO STEP 4H PARTS USED: 40-0594-3-1310,QTY :1 31-3231-9-0001,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1763550 SN OFF 1786 UPLOCK, ASSY, N OFF 31-3231-9-0001 1786 ON 31-3231-9-0001 8830 UPLOCK, ASSY, N OFF 31-3231-9-0001 1786 ON 0000 COMPLETED INSTALLATION OF NLG UPLOCK ASSY REF MM 32-31-14-400-001-A. ADJUSTED NLG MAIN DOOR CONTROL RODS REF MM32-31-41-400-001-A. ACCOMPLISHED 3 NORMAL EXTENTION AND RETRACTIONS OF THE NLG REF MM32-31-00-720-003-A. ALL NLG AND NLG ADD EMP:U026455 DOOR INDICATION NORMAL. PARTS USED: 00-0609-3-9664,QTY :1

More about the Airbus A319-131