Interplane SKYBOY EX accident near Sandy, Oregon, July 28, 2012
On July 28, 2012 at about 1:30 am local time, a 2001 Interplane SKYBOY EX, registered N582YB, was substantially damaged in an accident during takeoff near Sandy, Oregon (Sandy River airport). 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).
The NTSB's probable cause their words, unchanged
A partial loss of engine power during takeoff due to carburetor icing. Contributing to the accident was the lack of a carburetor heat system installed on the airplane.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 28, 2012 · about 1:30 am local time
- Place
- Sandy, Oregon · Sandy River · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Interplane SKYBOY EX, built 2001
- Registration
- N582YB · no longer on the register · serial 06192001735
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot had been flying the airplane for about 1 hour before the accident. He landed, shut down the engine, boarded new passengers, and restarted the engine. The total time from shut down to start up was about 5 minutes. He stated that the airplane's engine performed normally during run-up and takeoff. After takeoff, about 300 to 400 feet above ground level, the engine began to lose power. The pilot made a hard right turn and landed in an open field. The airplane impacted a fence post with its right wing during the landing roll. An engine examination revealed that the engine did not have a carburetor heat system installed. The subsequent engine test run on the airframe confirmed that a partial loss of engine power occurred after about 1.5 minutes of operation. The temperature, dew point, and relative humidity were nearly identical during the engine test run and the accident event. A carburetor icing chart indicated the possibility of serious carburetor icing at cruise power at the reported atmospheric conditions. The engine was removed from the airframe, examined, and tested at an engine tech services facility. During the engine test run the engine performed at various power levels for 28 minutes without degraded power output. The atmospheric conditions during this test were significantly different than the conditions at the time of the accident. The engine inspection concluded that there were no anomalies that would have precluded normal operation.
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
What happened, in order
- Loss of engine power (partial) during takeoff defining event
The NTSB's findings
- cause Environmental issues › Conditions/weather/phenomena › Temp/humidity/pressure › Conducive to carburetor icing › Effect on equipment
- factor Organizational issues › Development › Design › Equipment design › Manufacturer
Pilot
- Certificate: flight instructor, private, sport pilot
- Ratings: single-engine land; instructor: airplane single-engine; instructor: glider; instructor: sport pilot; rotorcraft: glider
- Flight time: 338 hours in all; 1 in this make and model
- Last flight review: January 20, 2012
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Airframe total time: 160 hours
- Last inspection: annual inspection, July 9, 2012; 4.5 hours since
- Maximum gross weight: 1,000 lb
- Seats: 2
- Landing gear: fixed
- Engine: Rotax 582 (piston); 164 hours total
The flight
- Departed from: 03S Sandy OR at 1:30 am
- Destination: 03S Sandy OR
- Flight plan: none
- Runway 08, 2,115 ft by 100 ft
Weather at the time
- Light: daylight
- Visibility: 10 statute miles
- Sky: a few clouds at 4,400 ft
- Temperature: 70°F (21°C), dew point 55°F (13°C)
- Altimeter: 30.05 inHg
- Observation at 1:53 am from KTTD, 12 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight 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.
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.