Service difficulty report · Indicator · Beech B200

Difficulty date
February 12, 2010
Submitted
March 1, 2010
Operation
General aviation
Make and model
Beech B200
Aircraft time
14,466 hours
Engine
Pwa PT642A
Propeller
Hartzl HCB3TN3
Part
Indicator
Condition
Erratic
Location
Torque
Stage of operation
DE
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

(CAN) CREW REPORTED THAT THE NR1 TORQUE INDICATOR WAS FLUCTUATING ERRATICALLY AND THE TORQUE INDICATOR CIRCUIT BREAKER HAD TRIPPED. AN INSP OF THE NR1 ENGINES FWD WIRE LOOM FOUND SEVERAL CHAFED WIRES. THE WIRES WERE CHAFING AGAINST THE FWD LOWER ENGINE COWL. ONE WIRE WAS CHAFED COMPLETELY THROUGH, 3 WIRES WERE EXPOSED AND ARCING AND 2 WIRES WERE CHAFING. ALL THE DAMAGED WIRES WERE REPAIRED & THE WIRE BUNDLE WAS RE-ROUTED AND SECURED TO PREVENT FURTHER DAMAGE. SUBSEQUENT ACFT WERE INSPECTED. 2 OF THE ACFT WERE BEGINNING TO SHOW SIGNS OF CHAFING IN THE SAME AREA. ALL EFFECTED WIRE BUNDLES WERE RE-ROUTED AND SECURED AS REQUIRED. (TC 20100216016)

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