Amateur-built ROTORWAY 162F accident near Marquette, Michigan, March 28, 2015
On March 28, 2015 at about 6:00 pm local time, a amateur-built ROTORWAY 162F (helicopter), registered N556DG, was substantially damaged in an accident during takeoff near Marquette, Michigan. It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The loss of helicopter control for reasons that could not be determined based on the available evidence.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- March 28, 2015 · about 6:00 pm local time
- Place
- Marquette, Michigan · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built ROTORWAY 162F
- Registration
- N556DG · no longer on the register · serial 6612
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot reported that he planned on hovering in the helicopter to get some measurements using a vibration computer. After lifting off and entering a hover, the helicopter started to yaw left. The pilot applied the right pedal, but the yaw continued. While the pilot maneuvered the helicopter away from buildings, it entered a spin and then spun about six to eight times before a main rotor blade struck a tree. The pilot stated that there was only a light breeze and no wind gusts at the time of the accident. An examination of the tail rotor drive belts revealed that at least two of the three belts were not damaged. The reason for the loss of control could not be determined.
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
- Loss of tail rotor effectiveness during takeoff
- Unknown or undetermined during unknown defining event
The NTSB's findings
- cause Not determined › Not determined › (general) › (general) › Unknown/Not determined
Pilot
- Certificate: commercial pilot
- Ratings: single-engine land; instrument: airplane; rotorcraft: helicopter
- Flight time: 917 hours in all; 165 in this make and model; 7 in the last 90 days; 2 in the last 30 days; 798 as pilot in command
- Medical certificate: Class 2 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Airframe total time: 27.5 hours
- Last inspection: condition inspection, March 28, 2015
- Landing gear: fixed
- Engine: Rotorway 162F (piston); 28 hours total
The flight
- Departed from: Marquette MI at 6:00 pm
- Destination: Marquette MI
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: from 240° at 8 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 30°F (-1°C), dew point 1°F (-17°C)
- Altimeter: 30.20 inHg
- Observation at 5:45 pm from KSAW, 10 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
2 documents, released by the NTSB on November 18, 2015. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 | PDF, 10 pages | View Download |
| 2 | Weather Reports and Records | PDF, 1 page | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
Other NTSB records under N556DG the same tail number, which may have belonged to a different aircraft at the time
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.