Aviation Accident Summary MIA98LA148

ORLANDO, FL, USA

Aircraft #1

N60WJ

Bell 206L-1

Analysis

The flight instructor (CFI) and student pilot flew for 1 hour 35 minutes in the airport area. During the flight, they performed training maneuvers, touchdown autorotations, hovering autorotations, and simulated tail rotor malfunctions. After returning to the ramp after the flight, company maintenance personnel found damage consistent with the main rotor blades contacting the tailboom. The CFI and student stated they did not know when the damage occurred and that they did not feel any vibration to suggest damage during the flight.

Factual Information

On April 25, 1998, about 1530 eastern daylight time, a Bell 206L-1, N60WJ, registered to Universal Air Service of Florida, Inc., was found to have damage from main rotor contact with the tail boom at Orlando Executive Airport, Orlando, Florida, following a Title 14 CFR Part 91 instructional flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The helicopter received substantial damage and the commercial-rated flight instructor and private-rated dual student were not injured. The flight originated from Orlando, Florida, the same day, about 1355. The instructor and dual student stated the flight was conducted as an instructional flight as part of a Bell Helicopter school. They departed Orlando Executive Airport about 1355, and stayed on the airport for the entire flight. During the first part of the flight, they performed touchdown autorotations. After completing the flight at about 1530, they were completing paperwork when maintenance personnel informed them about damage to the tailboom of the helicopter from a main rotor strike. They stated that at no time during the flight did they feel the main rotor contact the tailboom, and they did not feel any unusual vibrations during the flight.

Probable Cause and Findings

failure of the flight crew to maintain main rotor RPM during a landing touchdown, which resulted in the main rotor blades contacting the tailboom.

 

Source: NTSB Aviation Accident Database

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