Amateur-built IV accident near Green Bay, Wisconsin, August 4, 1993
On August 4, 1993 at about 2:30 pm local time, a amateur-built IV, registered N127RF, was substantially damaged in an accident near Green Bay, Wisconsin. It was a personal 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).
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The NTSB's probable cause their words, unchanged
the improper modification of the fuel system by the pilot-in-command. A factor was bockage of the fuel system screen.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 4, 1993 · about 2:30 pm local time
- Place
- Green Bay, Wisconsin · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built IV
- Registration
- N127RF · registry record · serial 1467
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE AMATUER BUILT AIRPLANE SUSTAINED A TOTAL LOSS OF ENGINE POWER WHILE IN CRUISE FLIGHT. DURING THE FORCED LANDING THE AIRPLANE SUSTAINED SUBSTANTIAL DAMAGE. A POST ACCIDENT EXAMINATION REVEALED THAT A FUEL SYSTEM SCREEN WAS BLOCKED WITH A SUBSTANCE THE PILOT-IN-COMMAND STATED WAS A SEALING COMPOUND HE HAD USED IN THE FUEL TANK. THE PILOT STATED HE DID NOT REMOVE THE FUEL SCREEN WHILE PERFORMING MAINTENANCE ON THE FUEL SYSTEM.
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: 1,360 hours in all; 63 in this make and model; 80 in the last 90 days; 22 in the last 30 days; 1,300 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 63 hours
- Last inspection: annual inspection, May 26, 1993; 2 hours since
- Maximum gross weight: 1,050 lb
- Seats: 2
- Landing gear: fixed
- Engine: Rotax 912 (piston); 0 hours total
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 350° at 8 knots
- Visibility: 10 statute miles
- Sky: broken clouds at 10,000 ft; scat at 3,100 ft
- Temperature: 63°F (17°C), dew point 48°F (9°C)
- Observation at 3:26 pm from GRB, 7 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 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 CHI93DEP03.