Amateur-built MONI MOTORGLIDER accident near Annville, Pennsylvania, May 20, 1991
On May 20, 1991 at about 11:00 pm local time, a amateur-built MONI MOTORGLIDER, registered N107GH, was substantially damaged in an accident near Annville, Pennsylvania (Millard airport). 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 PILOT'S INTENTIONAL LANDING ON UNSUITABLE TERRAIN DUE TO A LOSS OF ALTITUDE PRECIPITATED BY A DOWNDRAFT.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 20, 1991 · about 11:00 pm local time
- Place
- Annville, Pennsylvania · Millard · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built MONI MOTORGLIDER MONI MOTOR
- Registration
- N107GH · no longer on the register · serial 100
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT WAS ON FINAL APPROACH IN HIS MOTORIZED GLIDER WHEN HE EXPERIENCED A SUDDEN LOSS OF ALTITUDE DUE TO A DOWNDRAFT, WHICH PLACED HIM BELOW THE ELEVATED THRESHOLD OF THE RUNWAY AND APPROXIMATELY 5 FEET ABOVE THE TERRAIN. HE APPLIED POWER IN AN ATTEMPT TO 'MAKE THE RUNWAY,' BUT 'CUT THE POWER AND FLARED INTO THE BUSHES AT THE RUNWAY EMBANKMENT' WHEN HE WAS UNABLE TO GAIN ENOUGH ALTITUDE.
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; rotorcraft: glider
- Flight time: 200 hours in all; 120 in this make and model; 40 in the last 90 days; 10 in the last 30 days; 180 as pilot in command
- Medical certificate: Class 3 (expired)
- Seat: ctr
The aircraft
- Last inspection: inspection type not recorded, October 17, 1990
- Maximum gross weight: 500 lb
- Seats: 1
- Landing gear: fixed
- Engine: Kea 107E (piston); 0 hours total
The flight
- Departed from: N71 Donegal Springs PA at 9:30 pm
- Flight plan: none
- Runway 11, 2,850 ft by 50 ft
Weather at the time
- Light: daylight
- Visibility: 15 statute miles
- Sky: clear
- Temperature: 70°F (21°C), dew point 37°F (3°C)
- Altimeter: 30.00 inHg
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.