Service difficulty report · Bleed Valve · Beech C99

Difficulty date
April 3, 2013
Submitted
April 4, 2013
Operation
Air carrier
Aircraft
N6724D
Make and model
Beech C99
Aircraft serial
U215
Aircraft time
24,089 hours, 33,554 cycles
Engine
Pwa PT6A36
Part
Bleed Valve
Part number
310082903
Part serial
1A254
Condition
Malfunctioned
Location
Rt Engine
Stage of operation
DE
How discovered
O
Nature of condition
R
Precautionary procedure
E

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

What was found

THE PILOT REPORTED THAT AFTER REDUCING THE POWER TO DESCEND INTO THE TRAFFIC PATTER AT KALW IT HE NOTICED UPON INCREASING POWER TO LEVEL OFF AT TRAFFIC PATTER ALTITUDE, THAT THE RIGHT ENGINE WAS ONLY PRODUCING 300LBS OF TORQUE AND IT WAS INDICATING ABNORMALLY HIGH ITT. AFTER SOME TROUBLESHOOTING THE PILOT ELECTED TO SHUT DOWN AND SECURE THE RIGHT ENGINE. HE THEN DECLARED AN EMERGENCY WITH KALW TOWER AND LANDED WITHOUT INCIDENT. CONTRACT MAINTENANCE INSPECTED THE RIGHT ENGINE AND FOUND THE COMPRESSOR BLEED VALVE WAS NOT FUNCTIONING PROPERLY. REMOVED AND REPLACED THE RIGHT ENGINE COMPRESSOR BLEED VALVE. THE RIGHT ENGINE GROUND PERFORMANCE RUN COMPLETED AND FOUND SATISFACTORY.

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