19971018047319A

Accident · Substantial damage

FAA accident report · Bell 47G-3B · Winston, MT · October 18, 1997

Date
October 18, 1997 · 21:30 local
Place
Winston, MT
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N47AH
NTSB investigation
NTSBSEA98LA006
Reported as
Bell 47G3B

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.

(-16) On October 18, 1997, at approximately 2130 MST, Bell helicopter N47AH, while on a routine flight, the pilot reported that the aircraft yawed slightly, then the engine lost all power. The pilot autorotated to the ground and landed in a field with a light left, nose down slope. On impact with the ground, the main rotor blade struck the tail boom, just forward of the tail rotor guard, separating the rear section of the tail boom. Both main rotor blades were damaged substantially. On impact the left forward section of landing gear folded down and under the cross tube, however, the fuselage did not indicate impact with the ground. The aircraft was moved by the owner to a hangar at helena airport, helena, Montana. Potential airworthiness responsibility still under investigation regarding the engine and its operation.

As the FAA filed it

(-16) ON OCTOBER 18, 1997, AT APPROXIMATELY 2130 MST, BELL HELICOPTER N47AH, WHILE ON A ROUTINE FLIGHT, THE PILOT REPORTED THAT THE AIRCRAFT YAWED SLIGHTLY, THEN THE ENGINE LOST ALL POWER. THE PILOT AUTOROTATED TO THE GROUND AND LANDED IN A FIELD WITH A LIGHT LEFT, NOSE DOWN SLOPE. ON IMPACT WITH THE GROUND, THE MAIN ROTOR BLADE STRUCK THE TAIL BOOM, JUST FORWARD OF THE TAIL ROTOR GUARD, SEPARATING THE REAR SECTION OF THE TAIL BOOM. BOTH MAIN ROTOR BLADES WERE DAMAGED SUBSTANTIALLY. ON IMPACT THE LEFT FORWARD SECTION OF LANDING GEAR FOLDED DOWN AND UNDER THE CROSS TUBE, HOWEVER, THE FUSELAGE DID NOT INDICATE IMPACT WITH THE GROUND. THE AIRCRAFT WAS MOVED BY THE OWNER TO A HANGAR AT HELENA AIRPORT, HELENA, MONTANA. POTENTIAL AIRWORTHINESS RESPONSIBILITY STILL UNDER INVESTIGATION REGARDING THE ENGINE AND ITS OPERATION.

NTSB investigation

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

Other reports on N47AH · 2

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