Amateur-built MARK V accident near Ogden, Utah, October 19, 1988
On October 19, 1988 at about 9:59 pm local time, a amateur-built MARK V, registered N555KM, was destroyed in an accident near Ogden, Utah (Ogden Muni airport). It was a personal flight under general aviation rules (Part 91). 1 person was killed. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
TOTAL LOSS OF ENGINE POWER FOR REASONS UNDETERMINED WHICH RESULTED IN A FORCED LANDING. THE PILOT INADVERTENTLY STALLED THE AIRCRAFT DURING THE FORCED LANDING, AND THAT IS CONSIDERED A FACTOR IN THE ACCIDENT.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- October 19, 1988 · about 9:59 pm local time
- Place
- Ogden, Utah · Ogden Muni
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built MARK V
- Registration
- N555KM · registry record · serial 00005
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine
- Flight time: 1,800 hours in all
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 156 hours
- Last inspection: inspection type not recorded; 1 hours since
- Maximum gross weight: 1,300 lb
- Seats: 1
- Landing gear: fixed
- Engine: Lycoming O-320-B (piston); 0 hours total
The flight
- Departed from: OGD at 9:15 pm
- Destination: OGD
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 260° at 8 knots
- Visibility: 60 statute miles
- Sky: clear
- Temperature: 66°F (19°C), dew point 37°F (3°C)
- Altimeter: 30.00 inHg
- Observation at 10:08 pm from OGD, 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.
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number DEN89DTM01.