SDR ASAA2019062099761

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: June 19, 2019
Submitted: June 21, 2019
Operation: Air carrier
Aircraft: N453AS
Make and model: Boeing 737990ER
Aircraft serial: 36354
Aircraft time: 21,421 hours, 6,958 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Captain'S
Stage of operation: CR
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

IN CRUISE CAPT ND DISPLAYED VTK, FOLLOWED BY MAP, LOSS OF LNAV AND VNAV. RAN QRH FOR LOSS OF LEFT FMC. GROUNDED - YES. ACCOMPLISHED FMC BITE. LH FMC LOGGED "PGM FAULT" LAST LEG. ACCOMPLISHED B737-900 FIM 34-61 TASK 807, LH FMC OPS NORMAL REF SAME.