# NTSB LAX08CA173: Beech A36, N824C, Ryegate, MT, June 26, 2008 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: June 26, 2008, 17:00 local (23:00 UTC) - Place: Ryegate, MT - Coordinates: 46.131389, -109.375 - Nearby events: https://openairdocs.org/map.md?lat=46.1314&lon=-109.3750&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: Minor injuries - Injuries: 1 minor, 2 uninjured - Status: Completed, report July 30, 2008 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 68248 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX08CA173 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/68248/pdf - Page: https://openairdocs.org/ntsb/LAX08CA173 ## Probable cause The pilot's failure to abort the takeoff when the ground roll acceleration profile was determined to be insufficient for takeoff. Contributing to the accident was the shifting wind conditions. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Airport facilities/design: runway/landing area length](https://openairdocs.org/ntsb-findings/03017037): Environmental issues › Operating environment · Not specified; cases with it: [Raytheon A36, 1 case](https://openairdocs.org/ntsb-findings/03017037/cases.md?model=7150001), [All aircraft, 34 cases](https://openairdocs.org/ntsb-findings/03017037/cases.md) - [Wind: sudden wind shift](https://openairdocs.org/ntsb-findings/03034010): Environmental issues › Conditions/weather/phenomena · Contributed to outcome (probable cause); cases with it: [Raytheon A36, 1 case](https://openairdocs.org/ntsb-findings/03034010/cases.md?model=7150001), [All aircraft, 114 cases](https://openairdocs.org/ntsb-findings/03034010/cases.md) - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained; cases with it: [Raytheon A36, 2 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=7150001), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) - [Action: lack of action](https://openairdocs.org/ntsb-findings/02041030): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Raytheon A36, 1 case](https://openairdocs.org/ntsb-findings/02041030/cases.md?model=7150001), [All aircraft, 792 cases](https://openairdocs.org/ntsb-findings/02041030/cases.md) - [Object/animal/substance: tree(s)](https://openairdocs.org/ntsb-findings/03022020): Environmental issues › Physical environment · Not specified; cases with it: [Raytheon A36, 2 cases](https://openairdocs.org/ntsb-findings/03022020/cases.md?model=7150001), [All aircraft, 933 cases](https://openairdocs.org/ntsb-findings/03022020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Initial climb: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Raytheon A36, 6 cases](https://openairdocs.org/ntsb-events/240/sequence.md?model=7150001), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Uncontrolled descent: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Raytheon A36, 17 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=7150001), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that prior to departure he checked the weather and performed a preflight inspection. He observed the direction of the windsock, and stated that it favored a takeoff from runway 23. He completed an uneventful run-up, and began the takeoff roll. Halfway down the turf runway he observed the airplane's airspeed to be indicating 60 knots. He stated that at this point on the takeoff roll he expected the airspeed to have reached 70 knots. The airplane continued to accelerate to 65 knots, and with the end of the runway approaching, the pilot 'forced' the airplane airborne and retracted the landing gear. The airplane settled to the ground and then collided with trees at the end of the runway. The pilot observed the wind direction after the accident, and noted that it was out of the northeast. He opined that the airplane had encountered a sudden wind shift or downdraft during the takeoff roll. ## Factual narrative The pilot reported that prior to departure he checked the weather and performed a preflight inspection. He observed the direction of the windsock, and stated that it favored a takeoff from runway 23. He completed an uneventful run-up, and began the takeoff roll. Halfway down the turf runway he observed the airplane's airspeed to be indicating 60 knots. He stated that at this point on the takeoff roll he expected the airspeed to have reached 70 knots. The airplane continued to accelerate to 65 knots, and with the end of the runway approaching, the pilot 'forced' the airplane airborne and retracted the landing gear. The airplane settled to the ground and then collided with trees at the end of the runway. The pilot observed the wind direction after the accident, and noted that it was out of the northeast. He opined that the airplane had encountered a sudden wind shift or downdraft during the takeoff roll. ## Aircraft - Registration: [N824C](https://openairdocs.org/deregistered/N824C-2010-08-31), registration cancelled 2010-08-31, S/N E-3338, built 2000 (OpenAirDocs) - Reported make and model: Beech A36 - Registry model: [Raytheon A36](https://openairdocs.org/model/raytheon-a36) (registry code 7150001) (OpenAirDocs) - Registry engine: [Continental IO-550 series](https://openairdocs.org/engine/continental-io-550-series) (registry code 17042, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: E-3338 - Airframe hours: 1060 - Engines: Continental IO-550 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Jimmie N Crump - Airworthiness certificate: Standard, Utility; Standard, Normal - Last inspection: 100 hour, February 1, 2008, 32.1 hours before - Departed: 3MT3, Ryegate, MT - Destination: BZN, Bozeman, MT - Airport: 3MT3, Three Cross Ranch Airport, runway 23, 2,850 × 60 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 68; injuries: minor; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; last flight review September 1, 2006; seat: left; flight hours: 30,000 total, 1,200 in this make and model, 42 in the last 90 days, 13 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: variable at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 36 °F - Altimeter: 29.80 inHg - Observed at: BIL, 39 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20080626839469A](https://openairdocs.org/incident/20080626839469A), Jun 26, 2008: Beech A36, Ryegate, MT, Substantial damage. (-23) On June 26, 2008, at 1700 local, a 2000 Beechcraft A-26 bonanza, N824C, with pilot in command[privacy data omitted] and two passengers departed from a… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.