SDR ASAA2017010319241

Service difficulty report · Software · Boeing 737990ER

Difficulty date: January 3, 2017
Submitted: January 5, 2017
Operation: Air carrier
Aircraft: N419AS
Make and model: Boeing 737990ER
Aircraft serial: 41734
Aircraft time: 15,088 hours, 4,926 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Software
Condition: Defective
Location: Cockpit
Stage of operation: LD
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

AFTER LANDING ALL FMC DATA DISAPPEARED. LEFT FMC CDU CHANGED TO MENU PAGE AND WHEN PERF INIT WAS SELECTED ONLY BLANK SQUARES WERE PRESENT. GROUNDED - YES. KNOWN ISSUE WITH U11.0 SOFTWARE. VERIFIED LT FMC ONLINE & OPS NORMAL. GROUND VERIFICATION GOOD, REF AMM 34-61-00 AND FIM 34-61 TASK 837.