- Date
- February 24, 1997, 12:05 local (17:05 UTC)
- Place
- Marion, OH
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N340EMHughes 369HS
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 21, 2000
- Report
- Approved by Office Director
- FAA report
- 19970224001839A
- Case key
- 28177
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Uncovering of the fuel tanks outlet, which resulted in fuel starvation and subsequent loss of engine power. A related factor was the unsuitable terrain.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The pilot had the fuel tank topped off 9 days before the accident and flew the helicopter for 15 minutes. On the day of the accident he added an additional 5 gallons. About 1 1/2 hours after takeoff the engine lost power. The pilot autorotated to a field and landed hard. Examination of the engine did not reveal any engine abnormalities or malfunctions. The helicopter's total fuel capacity was 64 gallons, of which 63.4 gallons was useable. When the helicopter was leveled and electrical power applied, the low fuel light was illuminated, and 5 3/4 gallons were pumped out by the fuel boost pump. According to the helicopter's flight manual, at low fuel level, sideslip may cause the fuel tank outlet to become uncovered causing fuel starvation. A review of the pilot's log book revealed that he was not helicopter rated, but had a helicopter solo endorsement that expired about 60 days prior to the accident.
Factual narrative
On February 24, 1997, at 1205 eastern standard time, a Hughes 369HS, N340EM, was substantially damaged during a forced landing near Marion, Ohio. The certificated private pilot was not injured. Visual meteorological conditions prevailed and a flight plan was not filed. The business flight was conducted under 14 CFR Part 91. The flight originated from Port Huron, Michigan, destined for Urbana, Ohio.
According to the pilot, about 1 1/2 hours into the flight, and about 10 miles northeast of his destination, the engine lost power. He entered autorotation, but the helicopter touched down hard, the left skid separated, the right front skid separated, and the helicopter rolled over on the left side.
The pilot said he topped off the fuel tank 9 days before the accident, and he had flown 15 minutes that day. On the day of the accident, he purchased an additional 5 gallons. The total fuel capacity of the fuel tank was 64 gallons, of which 63.4 gallons was useable.
According to a Federal Aviation Administration Inspector, examination of the fuel system did not reveal any air leaks. The helicopter was leveled and electrical power was applied. When the power was applied, the low fuel light was illuminated, and using the helicopter fuel boost pump, 5 3/4 gallons were collected in a container before the fuel flow stopped.
According to the helicopter flight manual, at low fuel level, sideslip may cause the fuel tanks outlet to become uncovered causing fuel starvation. Examination of the helicopter and engine did not reveal any abnormalities that would have precluded operation.
A review of the pilot's log book revealed that he was not helicopter rated, but had a helicopter solo endorsement that expired about 60 days prior to the accident.
Aircraft
- Registration
- N340EM
- Reported as
- Hughes 369HS
- Category
- Helicopter
- Serial number
- 1290226S
- Engine
- Allison 250-C10D, 278 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Registered owner
- Manfred W Engler
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · July 11, 1996 · 71 hours before
- Departed
- PHN · Port Huron, MI
- Destination
- I78 · Marysville, OH
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 56
- Certificates
- Private, Foreign
- Airplane ratings
- Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 1,495 total · 105 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 260° at 8 knots, gusting 10
- Visibility
- 30 statute miles
- Lowest ceiling
- None
- Temperature
- 34 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.