Service difficulty report · Disc · Bell 222UT

Difficulty date
October 25, 2010
Submitted
October 26, 2010
Operation
Air carrier
Aircraft
N220LN
Make and model
Bell 222UT
Aircraft serial
47567
Aircraft time
6,880 hours
Engine
Lyc LTS101750C1
Part
Disc
Part number
4000434
Condition
Unserviceable
Location
Rotor Brake
Component
Rotorbrake Assy · Bell
Component part number
4000244
Stage of operation
TO
How discovered
O
Nature of condition
K, B, J
Precautionary procedure
C

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

What was found

DURING LIFT OFF, ROTORBRAKE WARNING LIGHTS ILLUMINATED, FOLLOWED BY TRANSMISSION CHIP LIGHTS AND TRANSMISSION OIL PRESSURE. CREW REPORTED SMELLING SOMETHING BURNING. PILOT IMMEDIATELY LANDED ACFT AND SHUTDOWN. INSPECTED ROTORBRAKE AREA AND FOUND ROTORBRAKE DISC TO HAVE HEAT DAMAGE, ROTORBRAKE ASSY WAS MISSING PADS AND LEAKING HYD FLUID. TAILROTOR COUPLING ASSY TELE-TEMPS DISCOLORED. TRANSMISSION WIRING HARNESS WAS BURNED AND MELTED JUST ABOVE T/R OUPUT SHAFT ON AFT XSMN. BOTH ENGINE DRIVESHAFTS HAD DISCOLORED TELE-TEMPS.

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