SDR ASAA2014050307687

Service difficulty report · Fmc · Boeing 737890

Difficulty date: May 3, 2014
Submitted: May 6, 2014
Operation: Air carrier
Aircraft: N535AS
Make and model: Boeing 737890
Aircraft serial: 35200
Aircraft time: 13,011 hours, 3,776 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Stage of operation: LD
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

ON SHORT FINAL, TWO SECONDS PRIOR TO TOUCHDOWN, FMC DISAGREE MESSAGE WITH LOSS OF AIRSPEED INDICATIONS ON CAPTAIN`S SIDE. AT LANDING, LOST AIRSPEED INDICATION ON BOTH CAPTAIN'S AND F/O'S SIDE. PFD'S ONLY. ACFT GROUNDED. PERFORMED FMC BITE IAW AMM 34-61-TASK 801, NO FAULTS FOUND, PERFORMED FIM TASK 34-61, TASK 835. FMC DISAGREE MESSAGE ON CDU, FMC 1 AND 2 RESTORED. OK TO CONTINUE.