SDR ASAA2015100913432

Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date: October 9, 2015
Submitted: October 13, 2015
Operation: Air carrier
Aircraft: N462AS
Make and model: Boeing 737990ER
Aircraft serial: 36362
Aircraft time: 5,681 hours, 1,853 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Warning Message
Condition: False Activation
Location: Fmc
Stage of operation: NR
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

CAPTAIN`S INBD DISPLAY UNIT DISPLAYED VTK & MAP. BOTH FMC'S WENT BLANK. INAV & LNAV DISENGAGED. AFTER 15 SECS EVERYTHING RETURNED TO NORMAL. ACFT GROUNDED. ACCOMPLISHED FMCS BITE IAW FIM 34-61, TASK 801. NO SENSOR FAULTS LOGGED. INFLIGHT FAULT FOR LEG 1 SHOWS INTERMITTENT FAULT "FMC-LT PRESSURE POS LAT RATE". ACCOMPLISHED FIM 34-61, TASK 824. NO CURRENT STATUS OR INFLIGHT FAULTS, LOGGED FOR LT AND RT ADIRS BITE, IAW FIM 34-21, TASK 801. NO HISTORY 30 DAYS.