Service difficulty report · Pressure Switch · Airbus A321231

Difficulty date
March 10, 2026
Submitted
March 13, 2026
Operation
Air carrier
Aircraft
N933AM
Make and model
Airbus A321231
Aircraft serial
7564
Aircraft time
27,285 hours, 10,865 cycles
Part
Pressure Switch
Part number
38762552
Condition
Fault Message
Location
Zone 100
Component
Apu · Honeywell · 1319A
Component part number
38007081
Stage of operation
CR
How discovered
V
Nature of condition
H, O
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: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO ICT DUE TO THE FLIGHT CREW REPORTING THAT DURING CRUISE APU FAILED IN FLIGHT AS IT WAS BEING USED AS A SECONDARY ELECTRICAL POWER SOURCE FOR AN INOPERATIVE #1 IDG CONFIGURATION (PER MEL # 24 01B ) DURING DIVERSION DESCENT IDG TEMPERATURE INCREASED CONTINUOUSLY AND RECEIVED ECAM IDG 1 OIL OVERHEAT PER ECAM DISCONNECTED IDG #1 PUSH BUTTON. THE AIRCRAFT LANDED SAFELY AT ICT WITHOUT FURTHER INCIDENT. ** SUPPLEMENTAL REPORT FOR AALA202603121549 SUBMITTED 3/12/2026 BY TUL MAINTENANCE REPLACED THE APU LOW OIL PRESSURE SWITCH PER AMM 49-94-14 AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK WITH NO ISSUES NOTED. ** (CLOSED)

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