Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
June 20, 2017
Submitted
June 22, 2017
Operation
Air carrier
Aircraft
N461AS
Make and model
Boeing 737990ER
Aircraft serial
36363
Aircraft time
12,995 hours, 4,270 cycles
Part
Fmc
Part number
1762000101
Part serial
008574
Condition
Failed
Location
Right
Part time
12,966 hours, 4,260 cycles
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

RIGHT FMC FAILED DURING CRUISE. ACFT GROUNDED. CONFIRMED FAILURE OF RIGHT FMC. REMOVED AND REPLACED THE RT FMC IAW AMM 34-61-02-000-801, AND 34-61-02-400-801. CROSSLOADED REQUIRED SOFTWARE IAW AMM 34-61-00/201. PERFORMED FMCS PERFORMANCE FACTORS ADJUSTMENT IAW AMM 34-61-00-800-801. PERFORMED FMC OPS TEST IAW AMM 34-61-00-710-801. TESTS PASSED.