Service difficulty report · Computer · Airbus A321231

Difficulty date
February 24, 2014
Submitted
February 27, 2014
Operation
Air carrier
Aircraft
N519UW
Make and model
Airbus A321231
Aircraft serial
3881
Aircraft time
19,006 hours, 6,096 cycles
Part
Computer
Part number
C13043BA04
Part serial
C13043030098
Condition
Defective
Location
Autothrust Sys
Part time
18,783 hours, 7,682 cycles
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
K

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

What was found

THROTTLE RUN AWAY WHEN AUTO PILOT 1 ENGAGED ON SHORT FINAL. REPLACED FMGC 2 IAW AMM 22-83-34-400-001-C. PERFORMED SATISFACTORY CAT LAND CHECK IAW JC 26T00022001. A SECOND EVENT OCCURRED FEB 26 WITH AUTO FLT AUTO THRUST OFF, ECAM INTERMITTENT. HISTORY HAS SHOWN FAULT OCCURS WITH NR 1 AUTOPILOT ENGAGED. PERFORMED OPERATIONS TEST OF THE ENG AUTO THRUST SYS ISOLATED IN ACFT INTEGRATED DATA SYS, IAW AMM 22-30-00-710-003-A, TESTED OK. REPLACED FMGC 1 IAW TSM 22-31-00-810-805-A, TSM 22-31-00-810-813-A & AMM 22-83-34-400-001-A.

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