Service difficulty report · Relay · Cessna 560XL

Difficulty date
August 16, 2010
Submitted
August 17, 2010
Operation
Air carrier
Aircraft
N626QS
Make and model
Cessna 560XL
Aircraft serial
5605126
Aircraft time
8,497 hours, 6,821 cycles
Part
Relay
Part number
MS24166D2
Condition
Malfunctioned
Location
Brake Assy
Stage of operation
LD
How discovered
O
Nature of condition
J
Precautionary procedure
H

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

What was found

ON FINAL AFTER GEAR EXTENSION, LOW BRAKE PRESSURE ANNUNCIATOR AND ANTI-SKID INOP ANNUNCIATOR BOTH CAME ON AND STAYED ILLUMINATED. EMERGENCY BRAKE WAS USED TO STOP THE AIRPLANE ON THE RUNWAY CIRCUIT BREAKERS PULLED FOR SAFETY. ANTI-SKID PUMP MOTOR DOES NOT RUN. JUMPERED ACCROSS BRAKE MOTOR CONTROL RELAY KN003 AND PUMP WORKS. MONITORED COIL POWER & GROUND IN TO KN003 LOOKED GOOD. REMOVED "FAILED" KN003 RELAY. INSTALLED NEW RELAY. OPS CHECKED GOOD ON SYS BLED BRAKES. DUE TO EMERGENCY BEING USED ON REMOVING. ALL DONE IAW MM 32-42-00.

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