SDR ASAA2021052634926

Service difficulty report · Fmc · Boeing 737890

Difficulty date: May 26, 2021
Submitted: May 28, 2021
Operation: Air carrier
Aircraft: N577AS
Make and model: Boeing 737890
Aircraft serial: 35186
Aircraft time: 50,790 hours, 15,112 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Faulted
Location: Right
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

FROM L/P 60196095 PILOTS REPORT F/O SHOWED VTK THEN BACK TO NORMAL. GROUNDED - YES. FMC INFLIGHT FAULT LOGGED FMC R DATE RATE INT. FAULT ON LAST LEG. DFCS B LOGGED 22-11071 ON LAST FLIGHT AND DEU 1 LOGGED 31-67440 ON LAST FLIGHT. FMC BITE PASSES REF B737-800 FIM 34-61 TASK 801 DEU 1 CURRENT STATUS TEST PASSES REF FIM 31-62 TASK 801.DFCS LRU REPLACEMENT TEST FOR FMC PASSES REF FIM 22-11 TASK 802. GROUND VERIFICATION SUCCESSFUL.