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Accidents · NTSB NYC99LA059 · Final report

Aerospatiale 355 accident near Toledo, Ohio, February 12, 1999

On February 12, 1999 at about 10:20 pm local time, a Aerospatiale 355 (helicopter), registered N355MF, was destroyed in an accident near Toledo, Ohio. It was a positioning flight under general aviation rules (Part 91). 3 people were seriously injured. The weather was instrument conditions (cloud, fog or low visibility).

The NTSB's probable cause their words, unchanged

The pilot's decision to continue the flight which resulted in inadvertent flight into IMC, and the subsequent spatial disorientation and loss of control. A factor in the accident was the inaccuracy of the weather forecast.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
February 12, 1999 · about 10:20 pm local time
Place
Toledo, Ohio
Type
Accident
Injuries
3 people were seriously injured.
Weather
instrument conditions (cloud, fog or low visibility)
Aircraft
Aerospatiale 355
Registration
N355MF · no longer on the register · serial 5100
Damage
Destroyed
Flight
Positioning flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

The flight departed the hospital for a routine Night VFR patient pickup and transport. Approximately 5 miles from Toledo Express Airport, the pilot received Toledo Express' current weather which included 1/4 mile in heavy snow showers. The pilot aborted the flight. Twenty seconds later Toledo advised the pilot that visibility had improved to 3 miles. Also, a company pilot operating in the vicinity of the pilot's destination, reported 2 to 3 miles of visibility, and a couple of snow squalls that could easily be circumnavigated. With this information the pilot elected to resume the mission, but once on course, he still felt flight conditions were inadequate. He aborted the flight for a second time. While en route to the departure point, the helicopter entered IMC. According to the flight nurse 'the pilot was fighting the helicopter with both hands.' The flight doctor stated that he lost visual contact with the ground for approximately 2 minutes, and regained it just before impact. The helicopter impacted a tree, and then a house seriously injuring the three occupants. In addition, the weather forecast obtained by the pilot prior to departure did not match actual conditions.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

Pilot

  • Certificate: flight instructor, commercial pilot
  • Ratings: instructor: helicopter; instrument: helicopter; rotorcraft: helicopter
  • Flight time: 3,300 hours in all; 16 in this make and model; 43 in the last 90 days; 8 in the last 30 days; 3,120 as pilot in command; 1,500 on instruments
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: rgt

The aircraft

  • Airframe total time: 3,608 hours
  • Last inspection: approved inspection programme, February 10, 1999; 0 hours since
  • Maximum gross weight: 5,291 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Allison C-20-F (turboshaft); 0 hours total
  • Operator: Corporate Jet INC

The flight

  • Departed from: NONE Toledo OH at 10:10 pm
  • Destination: NONE Toledo OH
  • Runway 0

Weather at the time

  • Light: night, dark
  • Wind: from 240° at 12 knots
  • Visibility: 0.5 statute miles
  • Sky: broken clouds at 1,800 ft; scat at 1,000 ft
  • Temperature: 30°F (-1°C), dew point 28°F (-2°C)
  • Altimeter: 29.00 inHg
  • Observation at 10:14 pm from TOL, 14 miles away

Injuries

FatalSeriousMinorNone
Crew3

Documents from the investigation the NTSB's docket: the evidence folder behind the report

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.