SDR ASAA2014102309476

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: October 23, 2014
Submitted: October 27, 2014
Operation: Air carrier
Aircraft: N469AS
Make and model: Boeing 737990ER
Aircraft serial: 41702
Aircraft time: 668 hours, 201 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Cockpit
Stage of operation: CR
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

90 MIN INTO FLIGHT, VTK & MAP FLAG CAME UP ON CAPT SIDE, FOLLOWED QRH 11.3 DUAL FMC DID NOT RESTORE. CONTINUED FLIGHT WITH FMC SOURCE SELECT SWITCH BOTH ON RT. ACFT GROUNDED. PERFORMED FIM 34-61, TASK 836, NR 1 FMC RESTORED, ALL FLAGS EXTINGUISED. FMC SELECT SOURCE SWITCH MOVED TO NORMAL. ACFT OK FOR SVC.