SDR ASAA2020021083126

Service difficulty report · Fmc · Boeing 737900ER

Difficulty date: February 8, 2020
Submitted: February 11, 2020
Operation: Air carrier
Aircraft: N407AS
Make and model: Boeing 737900ER
Aircraft serial: 41731
Aircraft time: 28,750 hours, 9,112 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Left
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

AT CRUISE, L/H VTK ON NAV DISPLAY, FOLLOWED BY LH MAP ON LH NAV DISPLAY. RAN QRH AND INSTRUCTED TO CHOOSE FMC BOTH ON RH. LH FMC DID NOT RECOVER. CONTINUED FLIGHT WITH FMC SWITCHED TO BOTH ON RH. GROUNDED - YES. OPENED, THEN RESET L/H FMC C/B ON P18-2 A6. FMC LEFT NOW OPS NML REF B737-900 FIM 34-61 TASK 836. ETOPS GND VERIFICATION TEST SUCCESSFUL.

More about the Boeing 737-900ER