SDR ASAA2015020310536

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: February 3, 2015
Submitted: February 5, 2015
Operation: Air carrier
Aircraft: N408AS
Make and model: Boeing 737990ER
Aircraft serial: 41732
Aircraft time: 8,442 hours, 2,679 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Stage of operation: CL
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

CLIMBING THRU LOW 20S LOST BOTH MAP AND CDU DISPLAYS. VTK AND MAP READ ON LT ND, MAP ON RIGHT ND. A/P REVERTED TO CW PTCH & ROLL. SELF RESET IN ABOUT 15 SECONDS. NORMAL OPS. ACFT GROUNDED. PERFORMED IN FLT FAULT REVEIW. FOUND FCC DATA INVALID. PERFORMED FIM 34-61, TASK 801, FOUND FMC-R FCC DATA, SYNC ERROR. NO OTHER FAULTS NOTED. REALIGNED ADIRS, NO FAULTS NOTED. NO HISTORY LAST 90 DAYS.