Robinson R-22B accident near Torrance, California, January 11, 1991
On January 11, 1991 at about 5:53 pm local time, a Robinson R-22B (helicopter), registered N40231, was substantially damaged in an accident near Torrance, California (Torrance airport). It was an instructional flight under general aviation rules (Part 91). 1 person had minor injuries. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE PILOT'S IMPROPER USE OF THE ROTORCRAFT'S FLIGHT CONTROLS. CONTRIBUTING FACTORS WERE RELATED TO THE PILOT'S LACK OF EXPERIENCE IN THE TYPE OF LOW ALTITUDE MANEUVER.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- January 11, 1991 · about 5:53 pm local time
- Place
- Torrance, California · Torrance · map
- Type
- Accident
- Injuries
- 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Robinson R-22B · all R-22Bs on the register
- Registration
- N40231 · no longer on the register · serial 1476'
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT WAS PRACTICING HOVERING AND TURNING AROUND A POINT MANEUVERS IN ACCORDANCE WITH HIS SOLO FLIGHT ENDORSEMENT. WHILE HOVERING SEVERAL FEET ABOVE GROUND LEVEL THE NOSE OF THE HELICOPTER PITCHED UP AND THE TAIL ROTOR CONTACTED THE GROUND AND BROKE. THEREAFTER, THE PILOT LOST CONTROL OF THE HELICOPTER AND IT ROLLED OVER. THE CERTIFICATED PRIVATE PILOT HAD LOGGED 2194 HOURS OF FLIGHT TIME IN FIXED WING AIRPLANES. HE HAD 26.2 HOURS OF FLIGHT TIME IN HELICOPTERS. THE PILOT'S TOTAL SOLO PIC FLIGHT TIME IN THE ACCIDENT HELICOPTER, WHICH HE WAS LEARNING TO FLY, WAS 3.2 HOURS.
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: private
- Ratings: single-engine land; instrument: airplane
- Flight time: 2,220 hours in all; 26 in this make and model; 2,057 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: unk
The aircraft
- Last inspection: inspection type not recorded; 0 hours since
- Maximum gross weight: 1,370 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-320-B2C (piston); 0 hours total
- Operator: Rolling Hills Aviation, INC.
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 300° at 3 knots
- Visibility: 3 statute miles
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
- Observation at 5:53 pm from TOA, 1 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| 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.