SDR AALA202010259017

Service difficulty report · Gcu · Airbus A321231

Difficulty date: October 22, 2020
Submitted: October 26, 2020
Operation: Air carrier
Aircraft: N534UW
Make and model: Airbus A321231
Aircraft serial: 3989
Aircraft time: 39,545 hours, 14,304 cycles
System (JASC): 2421 · AC Generator-Alternator
Part: Gcu
Part number: 767584J
Part serial: AAAY005675
Condition: Defective
Location: Nr 1
Part time: 41,850 hours, 14,915 cycles
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

AIRCRAFT WAS GROUNDED. IN CRUISE FL320, SUDDEN JOLT/YAW FOLLOWED BY MASTER CAUTION. ENGINE GEN 1 FAULT ECAM. RESET GEN 1, PER ECAM, ANOTHER JOLT/YAW AND GENERATOR CAME BACK ON. REMOVE AND REPLACE THE GCU1 (1XU1), PER AMM 24-22-34. OPERATIONS CHECK OF THE GAPCU VIA THE CFDS TEST PASSED AND NO CLASS 3 FAULTS.

More about the Airbus A321-231