Service difficulty report · Thermostat · Airbus A321231

Difficulty date
August 12, 2022
Submitted
August 24, 2022
Operation
Air carrier
Aircraft
N109NN
Make and model
Airbus A321231
Aircraft serial
5955
Aircraft time
29,199 hours, 6,010 cycles
Part
Thermostat
Part number
341F010000
Part serial
12697
Condition
None
Location
Zone 400 - Nac/P
Stage of operation
TO
How discovered
V
Nature of condition
J
Precautionary procedure
A, O

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

What was found

AIRCRAFT WAS GROUNDED: DUAL BLEED FAULT AFTER TAKEOFF. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. **ORIGINAL REPORT WAS AALA202208166469** MAINTENANCE REPLACED THE #1 BLEED MONITORING COMPUTER (BMC), REPLACED THE #2 ENGINE HIGH PRESSURE BLEED VALVE PER AMM 36-11-51 (AALA202208247935) REPLACED THE #2 ENGINE PRESSURE REGULATING VALVE PER AMM 36-11-52 (AALA202208241041) AND REPLACED THE #2 ENGINE THERMOSTAT TEMPERATURE LIMITATION SOLENOID PER AMM 36-11-55. (AALA202208247361). A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED PER TASK CARDS 26L40036001 AND 26L00071014 WITH NO DEFECTS BEING NOTED ON EITHER ENGINE.

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