SDR AALA202012049007

Service difficulty report · Unknown · Airbus A321231

Difficulty date: December 3, 2020
Submitted: December 4, 2020
Operation: Air carrier
Aircraft: N535UW
Make and model: Airbus A321231
Aircraft serial: 3993
Aircraft time: 40,300 hours, 14,478 cycles
System (JASC): 2700 · Flight Control System
Part: Unknown
Condition: Unknown
Location: Flt Control
Stage of operation: DE
How discovered: O
Nature of condition: F
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. AIRCRAFT PITCHED OVER IN OPEN DESCENT DESCENDING THROUGH FLIGHT LEVEL 340. AIRCRAFT OVERSPEED, 1 BAR, FOR APPROXIMATELY 10-20 SECONDS. POST FLIGHT REPORT SHOWED NO LAST LEG FAULTS. GROUND SCAN OF ELECTRONIC FLIGHT CONTROL SYSTEM SHOWED NO FAULTS. AMM 27-96-00 BUILT IN TEST EQUIPMENT TEST OF ELEVATOR AILERON COMPUTERS 1 AND 2 CHECKS GOOD. AMM 22-96-00 OPERATIONAL TEST OF AUTO FLIGHT SYSTEM GOOD, NO OVERSPEED REPORT GENERATED.

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