ASN Wikibase Occurrence # 196988
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| Date: | Wednesday 26 July 2017 |
| Time: | 12:40 |
| Type: |  Beechcraft A36TC Bonanza |
| Owner/operator: | Private |
| Registration: | N60WB |
| MSN: | EA-173 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 3612 hours |
| Engine model: | Continental TSIO-520NBcUB |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Ogden, UT -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Ogden Municipal Airport, UT (OGD/KOGD) |
| Yellowstone Airport, MT (WYS/KWYS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot and three passengers departed on a cross-country flight in the turbocharged single-engine airplane. Witnesses saw the airplane during the takeoff and reported that about 3,700 ft down the 5,195-ft-long runway, the airplane was about 100 ft above the runway surface. The witnesses also noticed that the engine sounded "underpowered" and that the tail of the airplane was moving up and down as if the pilot was struggling to keep the airplane airborne. The airplane continued its climbout, and soon after, the pilot communicated to the tower controller that the airplane was "going down." The airplane impacted the right side of a north-bound freeway. Detailed examination of the airplane, engine, and propeller did not reveal any pre-impact mechanical deficiencies that would have precluded normal operation.
Given the weights of the pilot, passengers, and fuel onboard, the airplane was near its maximum gross weight about the time of the accident. Additionally, the density altitude was about 6,500 ft. Both of these factors would have resulted in an increased takeoff distance and reduced climb performance, though review of performance data indicated that the runway available was adequately long to accommodate the airplane's predicted takeoff roll (2,109 ft) and distance to clear a 50-ft obstacle (3,401 ft). Although the actual loading of the airplane at the time of the accident could not be accurately determined, including the weight and location of any baggage and the positions of the rear passengers, it is likely that the airplane's center of gravity (CG) was outside of its forward end of the envelope as depicted on a weight and balance worksheet. A forward CG can result in nose heaviness and increased stall speed.
The pilot chose to operate the airplane under conditions which would have adversely affected its performance, namely, high gross weight, high density altitude, and with a CG that may have been forward of prescribed limits. Whether the pilot calculated the airplane's weight and balance before the flight and was prepared for the resulting negative effects on its takeoff performance could not be determined. Given the lack of anomalies observed during postaccident examination, it is unlikely that the pilot experienced a loss of engine power or mechanical failure during the takeoff; therefore, the reason for the pilot's loss of control shortly after takeoff could not be determined.
Probable Cause: A loss of control during takeoff for reasons that could not be determined.
Accident investigation:
 |
|
Sources:
NTSB
Location
Images:
Photos(c): NTSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Jul-2017 19:57 | dfix | Added |
| 26-Jul-2017 20:00 | harro | Updated [Aircraft type, Source, Embed code, Narrative] |
| 26-Jul-2017 20:55 | Iceman 29 | Updated [Total fatalities, Embed code] |
| 27-Jul-2017 05:21 | gerard57 | Updated [Aircraft type, Total occupants, Other fatalities, Nature, Source, Embed code] |
| 27-Jul-2017 05:22 | nc16910 | Updated [Aircraft type, Departure airport, Source, Embed code, Narrative] |
| 27-Jul-2017 05:49 | harro | Updated [Aircraft type, Registration, Cn, Operator, Total occupants, Other fatalities, Phase, Nature, Departure airport, Source, Narrative] |
| 27-Jul-2017 09:55 | Iceman 29 | Updated [Time, Location, Source, Embed code, Narrative] |
| 27-Jul-2017 10:06 | Iceman 29 | Updated [Source, Photo, ] |
| 27-Jul-2017 13:26 | Aerossurance | Updated [Location, Narrative] |
| 27-Jul-2017 18:11 | Anon. | Updated [Narrative] |
| 28-Jul-2017 06:37 | BTD-1 | Updated [Time] |
| 22-Aug-2017 14:50 | TheK-Man | Updated [Narrative] |
| 11-Nov-2019 17:38 | ASN Update Bot | Updated [Time, Aircraft type, Operator, Departure airport, Destination airport, Source, Embed code, Damage, Narrative, Accident report, ] |
| 05-Apr-2020 06:49 | Anon. | Updated [Embed code, Narrative] |
| 15-Mar-2022 20:58 | Captain Adam | Updated [Location, Departure airport, Destination airport, Embed code, Photo] |
| 15-Mar-2022 20:58 | Captain Adam | Updated [Photo] |
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