Service difficulty report · Brake · Airbus A300F4622R

Difficulty date
July 11, 2026
Submitted
August 5, 2026
Operation
Air carrier
Aircraft
N150UP
Make and model
Airbus A300F4622R
Aircraft serial
0833
Aircraft time
28,137 hours, 16,941 cycles
Part
Brake
Part number
C20101610003
Part serial
UP57978
Condition
Indication
Location
Zone 700
Stage of operation
DE
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

EMERGENCY DECLARED, UPON LOWERING THE GEAR FOR LANDING, BRAKE RELEASE SIGNAL FOR WHEELS 5 & 8 WAS MISSING. CYCLED THE ANTI-SKID SWITCH & ELECTED TO FOLLOW ANTI-SKID FAULT CHKLIST. RELEASE SIGNAL FOR WHEEL 6 ALSO DISAPP, CHECKED RESISTANCE FOR BRAKE SERVO VALVES IAW ASM 32-42-00 SCH 06, NR 5 NORMAL BRAKE SERVO VALVE (19GG) 104 OHMS, NR 8 NORMAL BRAKE SERVO VALVE (20GG) 106 OHMS, NR 5 & NR 6 ALTERNATE BRAKE SERVO VALVE (77GG) 104 OHMS, NR 7 & 8 ALTERNATE BRAKE SERVO VALVE (78GG) 102 OHMS REF TSM 32-42-00/101 FIG 101. PERFORMED BITE CHK ON BSCU, NO FAULTS RECORDED. R & R BSCU (29GG) IAW AMM 32-42-72/401, OPS CHKD NORMAL IAW AMM 32-42-00/501.

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