Service difficulty report · Control Unit · Boeing 737823

Difficulty date
August 6, 2025
Submitted
August 7, 2025
Operation
Air carrier
Aircraft
N902AN
Make and model
Boeing 737823
Aircraft serial
29504
Aircraft time
69,166 hours, 29,009 cycles
Part
Control Unit
Part number
142219
Part serial
31248302429
Condition
Faulted
Location
Zone 100
Part time
194 hours, 95 cycles
Stage of operation
TX
How discovered
O
Nature of condition
G
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: DURING THE LANDING ROLL AND AGAIN DURING THE TAXI, THE ANTI-SKID AND BRAKING SYSTEM HAD A TENDENCY TO SKIP AND STUTTER. PERFORMED (AACU)-ANTISKID AUTOBRAKE CONTROL UNIT BITE PER FIM 32-42-00-810-801. FOUND MULTIPLE FAULTS. REMOVE AND REPLACED AACU, PER AMM 32-42-21. PERFORMED OPERATIONAL TEST PER AMM 32-42-00 FAULTS CLEARED.