Service difficulty report · Control Unit · Boeing 757236

Difficulty date
January 4, 2020
Submitted
January 6, 2020
Operation
Air carrier
Aircraft
N951FD
Make and model
Boeing 757236
Aircraft serial
28665
Aircraft time
33,985 hours, 23,797 cycles
Part
Control Unit
Part number
426412
Part serial
00166
Condition
Failed
Location
Anti-Skid Sys
Stage of operation
LD
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

FOUND DURING WRI# 05-50/6574. ANTISKID/AUTOBRAKE CONTROL UNIT HAS MSG "BOX 1-5" THAT WILL NOT CLEAR. DURING TRANSDUCER SPINUP TEST, TRANSDUCER #1 SPINUP DOES NOT RESULT IN RELEASE OF BRAKE #5. REMOVED AND REPLACED ANTISKID/AUTOBRAKE CONTROL UNIT REF B757 MM 32-42-01-4. CONTROL UNIT INSTALLATION TEST PASSED. NEED TO ACCOMPLISH ANTISKID TRANSDUCER SPINUP TEST PER MM 32-42-00-5 ACCOMPLISHED ANTISKID TRANSDUCER SPINUP TEST PER MM 32-42-00-5 . OPS CHECKED NORMAL