Robinson R22 accident near Marlboro, Massachusetts, April 10, 2011
On April 10, 2011 at about 1:30 pm local time, a Robinson R22 (helicopter), registered N791SH, was substantially damaged in an accident during maneuvering (hover) near Marlboro, Massachusetts (Marlboro Airport). It was an instructional 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 student pilot's failure to maintain directional control during takeoff.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 10, 2011 · about 1:30 pm local time
- Place
- Marlboro, Massachusetts · Marlboro Airport · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Robinson R22 BETA · all R22s on the register
- Registration
- N791SH · registry record · serial 3637
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The student pilot stated that prior to departure for a solo cross-country flight, his flight instructor informed him he would notice extra aft weight when lifting off as this would be his first time flying the helicopter solo with full fuel tanks. The student pilot stated that as the helicopter became light on its skids, he felt it tilt aft, and corrected with the application of cyclic and anti-torque pedals. As he raised the collective and lifted off the ground, the helicopter turned to the right, and he immediately lowered the collective and set the helicopter back down. The helicopter's tail skid impacted the ground, and the helicopter sustained substantial damage to the vertical stabilizer. The student pilot stated there were no mechanical malfunctions or anomalies with the helicopter, and that the right turn may have been prevented by additional left anti-torque pedal application.
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 control in flight during maneuvering (hover) defining event
The NTSB's findings
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Directional control › Not attained/maintained
- cause Personnel issues › Action/decision › Action › Lack of action › Pilot
- Personnel issues › Experience/knowledge › Experience/qualifications › Total experience w/ equipment › Pilot
Dual student
- Certificate: private
- Ratings: single-engine land
- Flight time: 189 hours in all; 30 in this make and model; 19 in the last 90 days; 5 in the last 30 days; 75 as pilot in command
- Last flight review: April 14, 2011
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: rgt
- Injury: no injuries
The aircraft
- Airframe total time: 4,579 hours
- Last inspection: 100-hour inspection, January 28, 2011
- Maximum gross weight: 1,370 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-360-J2A (piston); 0 hours total
The flight
- Departed from: 9B1 Marlboro MA
- Destination: 9B1 Marlboro MA
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: from 180° at 5 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 54°F (12°C), dew point 28°F (-2°C)
- Altimeter: 30.13 inHg
- Observation at 1:56 pm from BED, 12 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
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.