SDR ASAA2017050720664

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: May 7, 2017
Submitted: May 10, 2017
Operation: Air carrier
Aircraft: N435AS
Make and model: Boeing 737990ER
Aircraft serial: 43292
Aircraft time: 14,125 hours, 4,653 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Part number: 1762000101
Part serial: 012571
Condition: Failed
Location: E&E Bay
Part time: 1,446 hours, 497 cycles
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

AT THE GATE INTERMITTENT VTK DISPLAYED ON CAPTAIN'S ND AND FMC PROMPTS DISAPPEAR FROM MCDU. GROUNDED - YES. REMOVED AND REPLACED LEFT FMC, REF AMM 34-61-02. LOADED SOFTWARE, REF AMM 34-61-00/201. ADJUSTED PERFORMANCE FACTORS, REF AMM 34-61-00-800-801. OPS TEST OK, REF AMM 34-61-00.