Service difficulty report · Pump · Cessna 550

Difficulty date
June 13, 2005
Submitted
June 14, 2005
Operation
General aviation
Aircraft
N26496
Make and model
Cessna 550
Aircraft serial
5500607
Aircraft time
6,245 hours, 5,296 cycles
Engine
Pwa JT15D4
Part
Pump
Part serial
5372
Condition
Seized
Location
Brakes
Stage of operation
LD
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

DURING APPROACH, WHILE LOWERING GEAR, PILOT IN COMMAND NOTICED "ANTI SKID INOP" LIGHT ILLUMINATED. PILOTS FOLLOWED EMERGENCY CHECKLIST PROCEDURES & MADE AN UNEVENTFUL LANDING AT HOME FIED. HOWEVER, EMERGENCY BRAKE SYS HAD TO BE USED TO BRING ACFT TO A STOP. MX STARTED TROUBLESHOOTING PROCEDURES & DISCOVERED POWER BRAKE PUMP SEIZED, CAUSING MOTOR TO TRIP CIRCUIT BREAKER. MOTOR ITSELF TESTED ON A BENCH & FOUND TO BE WORKING IAW MM. AT TIME OF WRITING, POWER BRAKE PUMP AND MOTOR ASSY HAVE BEEN SENT OUT FOR REPAIR/OVERHAUL. SINCE CESSNA DOES NOT HAVE A TBO ON EITHER THE MOTOR OR THE PUMP, IT IS SUGGESTED THAT A TBO OF 500 TO 600 LANDINGS BE APPLIED TO THESE COMPONENTS.

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