20000823041179A

Accident · No damage

FAA accident report · Bell 206B II · WA · August 23, 2000

Date: August 23, 2000 · 16:00 local
Place: WA
Operating rules: General operating rules (Part 91)
Damage: No damage
Aircraft: N90307
NTSB investigation: NTSBSEA00LA197

N90307Registered now · Bell 206B IIS/N 1747 · Built 1975 Airframe modelBell 206B II Engine modelAllison 250-C20 seriesTurbo-prop

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23)According to pilot report, after landing and reducing power to idle, a noise was heard immediately followed by the main rotor pitching back and to the left. The gyration of the main rotor was violent to the point that the toes of the skids were being lifted off the ground a foot or two with each rotation of the rotor and the aircraft moved backwards with each pitch up. Pilot stated that he shut the engine dow and held collective full forward until rotor wound to a stop.

As the FAA filed it

(-23)ACCORDING TO PILOT REPORT, AFTER LANDING AND REDUCING POWER TO IDLE, A NOISE WAS HEARD IMMEDIATELY FOLLOWED BY THE MAIN ROTOR PITCHING BACK AND TO THE LEFT. THE GYRATION OF THE MAIN ROTOR WAS VIOLENT TO THE POINT THAT THE TOES OF THE SKIDS WERE BEING LIFTED OFF THE GROUND A FOOT OR TWO WITH EACH ROTATION OF THE ROTOR AND THE AIRCRAFT MOVED BACKWARDS WITH EACH PITCH UP. PILOT STATED THAT HE SHUT THE ENGINE DOW AND HELD COLLECTIVE FULL FORWARD UNTIL ROTOR WOUND TO A STOP.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB SEA00LA197Accident · No injuriesLimited investigationFinal reportNewhalem, WADebonding between the elastomeric material and the center plate of the transmission isolation mount.Aug 24, 2000 · Substantial damage

Other reports on N90307 · 1

Matched to the same aircraft by N-number and date.

Accident 19910528018779ASfl Autorotation · Brewster, WASimulated power loss. Auto rotated to run landing in soft sand. Sudden stop damaged boom. Flew helicopter to ramp.May 28, 1991 · Reported as Bell 206B1 · Substantial damage