SDR ASAA2019091930730

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: September 19, 2019
Submitted: September 20, 2019
Operation: Air carrier
Aircraft: N423AS
Make and model: Boeing 737990ER
Aircraft serial: 35206
Aircraft time: 25,390 hours, 8,243 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Nr 2
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

#2 FMC MAP VTK FAILURE. GROUNDED - YES. FOUND FMC #2 UNRESPONSIVE TO BITE AND POWER INDICATION IS EXTINGUISHED. OPENED AND RESET 2EA C/B. REMOVED AND REPLACED #2 FMC REF AMM 34-61-02-000-801/400-801. REMOVED TAGS AND RESET 2EA C/B. OPS CHECKS PASSED.