SDR AALA2019102879001

Service difficulty report · Fmc · Boeing 737823

Difficulty date: October 26, 2019
Submitted: October 29, 2019
Operation: Air carrier
Aircraft: N919NN
Make and model: Boeing 737823
Aircraft serial: 29573
Aircraft time: 21,216 hours, 8,632 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Stage of operation: CL
How discovered: V
Nature of condition: S
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT WAS GROUNDED: PILOT REPORTS ON TAKEOFF ROLL AT OR ABOUT V1, ALL V SPEEDS DISAPPEARED. V SPEEDS WERE CONFIRMED ON TAXI OUT, SPEEDS WERE 140,142,147. CALLED ROTATION AT ABOUT 155 KTS. MAINTENANCE ACCOMPLISHED BITE OF FMS, DFCS, AND CDS, ALL NORMAL. NO FAULTS DISPLAYED FOR PREVIOUS FLT LEG. OPERATIONAL TEST OF DFCS NORMAL IAW AMM 22-11-00. OPERATIONAL TEST OF FMC NORMAL IAW AMM 34-61-00. OPERATIONAL TEST OF CDS NORMAL IAW AMM 31-62-00. ALL TESTS GOOD.