Enstrom F28F accident near Corona, California, April 27, 1990
On April 27, 1990 at about 7:30 pm local time, a Enstrom F28F (helicopter), registered N756H, was substantially damaged in an accident near Corona, California. 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 PARTIAL FAILURE OF THE ENGINE'S RIGHT MAGNETO, WHICH RESULTED IN A LOSS OF ENGINE POWER.
Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 27, 1990 · about 7:30 pm local time · cases in 1990
- Place
- Corona, California
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Enstrom F28F · all F28Fs on the register
- Registration
- N756H · registry record · serial 756
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE STUDENT WAS ASSIGNED TO PRACTICE STEEP APPROACH LANDINGS, HOVERING AND QUICK STOPS. AFTER FLYING FOR ABOUT 45 MINUTES, AND WHILE PRACTICING QUICK STOPS, THE HELICOPTER'S ENGINE BEGAN SPUTTERING, COUGHING AND THEN QUIT. THE PILOT MADE AN AUTOROTATIVE DESCENT AND ROLLED OVER FOLLOWING TOUCHDOWN ON SOFT TERRAIN. DURING THE POST-CRASH EXAM OF THE AIRCRAFT THE ENGINE RPM DROP OFF ASSOCIATED WITH OPERATION OF THE LEFT AND RIGHT MAGNETOS WAS NOTED AT 150 AND 400 RPM, RESPECTIVELY.
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
- Flight time: 250 hours in all; 22 in this make and model; 52 in the last 90 days; 22 in the last 30 days; 150 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: 2,600 lb
- Seats: 3
- Landing gear: fixed
- Engine: Lycoming HIO-360-F1AD (piston); 0 hours total
- Operator: Hiser Helicopters, INC.
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 070° at 10 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
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.
Other NTSB records under N756H the same tail number, which may have belonged to a different aircraft at the time
Connections how this case links to the rest of the register
- N756H on the register today · the tail number may have moved to another aircraft since
- Enstrom F-28 147 registered today · the model family and its accident history
- Enstrom 216 aircraft on the register
- Engine: Lycoming HIO-360-F1AD 34 aircraft carry this series today · as the NTSB recorded it
- Accidents and incidents in California 9,080 since 1982 · 1,094 in the last ten years
- California 28,286 aircraft registered
- Other NTSB records under N756H 1 records · the number may have belonged to another aircraft at the time
The whole map of how records connect · these connections as data: /graph/accident/LAX90LA155.json.
The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.
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 does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.