SDR AALA202104049005

Service difficulty report · Pressure Switch · Airbus A321231

Difficulty date: April 2, 2021
Submitted: April 6, 2021
Operation: Air carrier
Aircraft: N914UY
Make and model: Airbus A321231
Aircraft serial: 6337
Aircraft time: 21,055 hours, 8,187 cycles
System (JASC): 4990 · APU Oil System
Part: Pressure Switch
Condition: Inoperative
Location: Apu Oil
Stage of operation: NR
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

AIRCRAFT WAS GROUNDED: APU AUTO SHUTDOWN AT FL 310 WITH ONE GENERATOR ALREADY PLACARDED; FLIGHT DECLARED EMERGENCY, RETURNED TO FIELD, AND LANDED WITHOUT FURTHER INCIDENT. REPLACED LOW OIL PRESSURE SWITCH WITH NEW IAW AMM 49-94-14, OPS CHECK GOOD.

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