SDR YENA2026052000471

Service difficulty report · Fmc · Airbus A321271NX

Difficulty date: May 18, 2026
Submitted: May 20, 2026
Operation: Air carrier
Aircraft: N4073J
Make and model: Airbus A321271NX
Aircraft serial: 11129
Aircraft time: 13,014 hours, 1,952 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Part number: C13207DA08
Part serial: C13207015468
Condition: Faulted
Location: Zone 100
Part time: 11,147 hours, 1,677 cycles
Stage of operation: NR
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

FLT # 20, LHR-JFK. (ETOPS) MCDU ENROUTE SHOWED EROUNIOUS ALTITUDE-SPEED-FUEL COMPARISONS- RESET SUCCESSFULLY PERFORMED PER RESET GUIDE FCOM VOL1 AND THAT WAS MCDU#1; NOTED BY MX, R&R FMGC NR 1 AS PRECAUTIONARY REF MM 22-83-34, XLOAD & OPS CHK OK SEE LP 4419020 FOR CAT III".

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