Robinson R-22 accident near Hillsboro, Oregon, March 12, 1995
On March 12, 1995 at about 5:45 pm local time, a Robinson R-22 (helicopter), registered N721HH, was substantially damaged in an accident near Hillsboro, Oregon (Portland-Hillsboro airport). It was an instructional flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE DUAL STUDENT PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL OF THE HELICOPTER DURING THE PRACTICE HOVER AUTOROTATION TO LANDING, AND THE FLIGHT INSTRUCTOR'S FAILURE TO ADEQUATELY SUPERVISE THE DUAL STUDENT DURING THE LANDING. CONTRIBUTING TO THE ACCIDENT WAS AN UNFAVORABLE WIND.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- March 12, 1995 · about 5:45 pm local time
- Place
- Hillsboro, Oregon · Portland-Hillsboro · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Robinson R-22 · all R-22s on the register
- Registration
- N721HH · registry record · serial 1484
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE DUAL STUDENT PILOT AND FLIGHT INSTRUCTOR WERE PRACTICING HOVER AUTOROTATIONS ONTO THE GRASS. IMMEDIATELY PRIOR TO THE ACCIDENT, DIRECTIONAL CONTROL OF THE HELICOPTER WAS LOST WHILE THE DUAL STUDENT WAS RECEIVING INSTRUCTION ON AUTOROTATING TO LANDING FROM A HOVER ABOUT TWO FEET ABOVE THE GROUND. BOTH THE STUDENT AND INSTRUCTOR WERE ON THE CONTROLS AT THE TIME. THE HELICOPTER BEGAN TO DRIFT TO THE LEFT, AND THE FLIGHT INSTRUCTOR USED FULL RIGHT CYCLIC TO CORRECT FOR THE DRIFT. THE HELICOPTER'S LEFT LANDING SKID STRUCK THE GROUND 'HARD' AND THE HELICOPTER ROLLED OVER, CAUSING SUBSTANTIAL DAMAGE. THE WIND WAS BLOWING FROM THE SOUTH AT 15 KNOTS.
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; rotorcraft: helicopter
- Flight time: 640 hours in all; 531 in this make and model; 110 in the last 90 days; 40 in the last 30 days; 603 as pilot in command; 373 on instruments
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Last inspection: annual inspection, March 10, 1995; 2 hours since
- Maximum gross weight: 1,370 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-320 (piston); 0 hours total
The flight
- Flight plan: none
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 180° at 15 knots
- Visibility: 15 statute miles
- Sky: broken clouds at 5,000 ft; scat at 2,000 ft
- Temperature: 48°F (9°C), dew point 43°F (6°C)
- Altimeter: 29.00 inHg
- Observation at 5:49 pm from HIO
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 2 |
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.