KNOXVILLE, TN, USA
N22299
BELL 222
THE HELICOPTER WAS IN A HOVER WHEN A RT PEDAL TURN WAS INITIATED AND A CLIMB ATTEMPTED. PLT STATED, 'I WAS UNABLE TO CLIMB, AND THE AIRCRAFT BEGAN TO LOSE ROTOR RPM. I INCREASED POWER TO 100% MRTQ. THE ACFT WAS SETTLING.' UNABLE TO SUSTAIN FLT, A LANDING WAS MADE AT A ROAD INTERSECTION DURING WHICH 3 VEHICLES WERE DAMAGED. THE ACFT WAS SUBSTANTIALLY DAMAGED BY FIRE. INSPECTION & TESTING REVEALED THE TORQUE CONTROL UNIT, P/N 222-360-010-101, WHICH LIMITS THE AMT OF COMBINED ENG TORQUE DELIVERED TO THE MAIN TRANSMISSION, WAS ADJUSTED TO 46.0 PSI. ACCORDING TO BELL MAINTENANCE MANUALS,THE UNIT SHOULD BE SET AT 48.5 PSI (+1.5/-0.0). THE UNIT WAS INSTALLED IN THE ACFT ON 3/1/82. IT COULD NOT BE DETERMINEDIF THE UNIT WAS ADJUSTED AT THE TIME OF INSTALLATION OR AFTER.
Source: NTSB Aviation Accident Database
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