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Accidents · NTSB CEN12FA091 · Final report

Robinson Helicopter Company R44 II accident near Hackensack, Minnesota, November 25, 2011

On November 25, 2011, a Robinson Helicopter Company R44 II, registered N821JV, was substantially damaged in an accident during maneuvering (hover) near Hackensack, Minnesota. It was a personal flight under general aviation rules (Part 91). 1 person was killed and 1 person had minor injuries. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The helicopter's sudden yaw and subsequent impact with the water for reasons that could not be determined during postaccident examination of the helicopter and its systems.

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

What the record shows

Date
November 25, 2011
Place
Hackensack, Minnesota · map
Type
Accident
Injuries
1 person was killed and 1 person had minor injuries.
Weather
visual conditions (good weather)
Aircraft
Robinson Helicopter Company R44 II
Registration
N821JV · no longer on the register · serial 10155
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

The pilot was maneuvering the helicopter for a landing near his residence and entered a low hover over a lake in dark night conditions about 200 yards from the shore and his residence. The passenger stated that she was not sure why the pilot decided to do that maneuver before landing. While in the low hover over the water, the passenger saw a yellow/orange flash and water splash on the windscreen. The helicopter yawed to the right and went into the water. Postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.

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

What happened, in order

  1. Loss of control in flight during maneuvering (hover) defining event
  2. Collision with terrain or object (not controlled flight into terrain) during maneuvering (hover)

The NTSB's findings

  • cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › (general) › Not attained/maintained
  • cause Not determined › Not determined › (general) › (general) › Unknown/Not determined

Pilot

  • Certificate: private
  • Ratings: single-engine land; rotorcraft: helicopter
  • Flight time: 1,659 hours in all
  • Last flight review: December 18, 2010
  • Medical certificate: Class 3 (with waivers/limitations)
  • Seat: rgt
  • Injury: fatal

The aircraft

  • Airframe total time: 1,142.9 hours
  • Last inspection: annual inspection, June 24, 2011
  • Maximum gross weight: 2,500 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Lycoming IO-540-AE1A5 (piston); 0 hours total

The flight

  • Departed from: AXN Alexandria MN at 10:00 pm
  • Destination: Hackensack MN
  • Flight plan: none

Weather at the time

  • Light: night
  • Wind: from 150° at 4 knots
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 30°F (-1°C), dew point 28°F (-2°C)
  • Altimeter: 29.68 inHg
  • Observation at 1:17 am from XVG, 9 miles away

Injuries

FatalSeriousMinorNone
Flight crew1
Passengers1

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.