Beech C 99 accident near Salt Lake City, Utah, June 30, 2015
On June 30, 2015 at about 2:00 pm local time, a 1981 Beech C 99, registered N6199D, was substantially damaged in an accident during takeoff near Salt Lake City, Utah (Salt Lake City Intl Airport). It was flown under charter and air-taxi rules (Part 135). 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
The airplane’s unmanageable right yaw during takeoff for reasons that could not be determined because postaccident examination of the rudder and rudder assembly did not reveal any anomalies that would have precluded normal operation.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 30, 2015 · about 2:00 pm local time
- Place
- Salt Lake City, Utah · Salt Lake City Intl Airport · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Beech C 99, built 1981 · all C 99s on the register
- Registration
- N6199D · no longer on the register · serial U-169
- Damage
- Substantial damage
- Flight
- Flight · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
The commercial pilot and copilot reported that, after a normal start and taxi, the airplane was cleared for takeoff. The pilot reported that he began the takeoff roll and, once the airplane reached 100 knots, he rotated the airplane. He added that the airplane immediately experienced an uncommanded right yaw and that the right rudder pedal was "at the floor." Both pilots applied pressure to the left rudder pedal; however, the pedal barely moved. The pilot then tried to manipulate the rudder trim; however, the airplane continued to yaw right. He then manipulated the throttle controls and landed the airplane on the left side of the runway. The airplane remained difficult to control, and subsequently, the left landing gear collapsed, and the airplane slid to a stop on its left side. Postaccident examination of the cockpit revealed that the rudder trim was fully trimmed to the nose-right position. Examination of the rudder and rudder trim assembly revealed no anomalies that would have precluded normal operation. The reason for the unmanageable right yaw could not be determined.
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
- Flight control sys malf/fail during takeoff defining event
- Runway excursion during takeoff (rejected takeoff)
- Abnormal runway contact during takeoff (rejected takeoff)
The NTSB's findings
- cause Not determined › Not determined › (general) › (general) › Unknown/Not determined
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Yaw control › Not attained/maintained
Pilot
- Certificate: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane multi-engine; instructor: airplane single-engine; instrument: airplane
- Flight time: 1,458 hours in all; 151 in this make and model; 151 in the last 90 days; 81 in the last 30 days; 1,278 as pilot in command; 210 on instruments
- Last flight review: April 15, 2015
- Medical certificate: Class 2 (with waivers/limitations)
- Seat: left
- Injury: no injuries
Co-pilot
- Certificate: commercial pilot
- Ratings: multi-engine land; single-engine land; instrument: airplane
- Flight time: 953 hours in all; 718 in this make and model; 280 in the last 90 days; 116 in the last 30 days; 162 as pilot in command; 0 on instruments
- Last flight review: June 23, 2015
- Medical certificate: Class 1 (without waivers/limitations)
- Seat: rgt
- Injury: no injuries
The aircraft
- Airframe total time: 31,957.2 hours
- Last inspection: approved inspection programme, June 28, 2015; 0 hours since
- Maximum gross weight: 11,300 lb
- Seats: 2
- Landing gear: retractable
- Engine 1: Pratt And Whitney PT6 (turboprop); 27,331 hours total
- Engine 2: Pratt And Whitney PT6 (turboprop); 27,601 hours total
- Operator: Ameriflight LLC
The flight
- Departed from: SLC Salt Lake City UT at 2:00 pm
- Destination: ELY Ely NV
- Flight plan: IFR
- Runway 16L, 12,002 ft by 150 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 160° at 3 knots
- Visibility: 10 statute miles
- Sky: broken clouds at 14,000 ft; clear
- Temperature: 82°F (28°C), dew point 54°F (12°C)
- Altimeter: 30.06 inHg
- Observation at 1:53 pm from SLC
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 2 |
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.