Service difficulty report · Seal · Airbus A319131

Difficulty date
March 18, 2026
Submitted
March 20, 2026
Operation
Air carrier
Aircraft
N851UA
Make and model
Airbus A319131
Aircraft serial
1664
Aircraft time
72,560 hours, 32,710 cycles
Part
Seal
Part number
NSA80543208
Condition
Worn
Location
Lt Wing
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

AIR BLEED MSG - DUE TO HISTORY OF AIR BLEED MSG, AVIATAR IS SHOWING L WING LOOP A 36-22-16 DURING CRUISE FLT DO THE FAULT ISOLATION PER TSM 36-22-00-810-825-A TO CHK L-WING LOOP A FOR DISCREPANCIES. VERIFY NO BLEED LEAKS ARE PRESENT. CHK LOOP RESISTANCE AND IMPEDANCE READINGS ARE WITHIN LIMITS. THE CWR SHOULD BE 15-25 OHMS REF AMM 36-22-00-760-803-A. LOOP IMPEDA NCE SHOULD BE >10K OHMS AMM 36-22-00-760-804-A. CORRECT DISCREPA NCIES FOUND. REPORT ALL FINDINGS, SFOLM LEE 650-874-5101.CARRIED BY ELB PER TSM TASK 36-22-00-810-825-A. BMC 1 BITE TEST OK, WILL NEED TO OPEN ACCESS PANELS TO PERFORM DUCT LK INSPECTION REF AMM 36-11-00-720-809. PROFORMED LEAK CHECK FOUND LEAK AT DUCT NR 2 & 28 CONNATION IAW AMM 30-11-42. ALSO REMOVE ANTI-ICE VALVE AND DUCT NR 2 TO INSPECT FOR DAMAGE AND WEAR. REPLACED WORN SEALS INSIDE DUCTS 2, 28, AND 78 IAW AMM 30-11-42/401 CONFIG 00 ILLUSTRATIONS. TORQUED CLAMP 44 INSULATION SLEEVE STILL NEEDS TO BE INSTALLED OVER CLAMP ALL WORK REF AMM 30-11-42. TESTED OVER HEAT LOOPS FROM BMC 1 FOR LEFT WING, CHANNEL A, NO FAULTS FOUND REF TSM 36-22-00-810-807-A AND WDM 36-22-01. REINSTALLED DUCT #2 IAW TASK 30-11-42-400-001-A UP TO AND INCLUDING PARA 4 STEP 13. ANTI ICE CONTROL VALL CBS HAVE BEEN CLOSED AND OPPS CHECKS AND LEAK CHECK GOOD REF AMM TASK 30-11-42-400-001-A PARAGRAPH C TO AND THUR SUBTASK 30-11-42-410-050-A PARAGRAPH A COMPLETED.

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