# NTSB CEN25FA040: Beech 35-B33, N285BW, Nunn, CO, November 15, 2024 - Type: NTSB accident investigation - Classification: Accident · Fatal · Class 3 · Field · Preliminary report - Date: November 15, 2024, 10:00 local (17:00 UTC) - Place: Nunn, CO - Coordinates: 40.751487, -104.79917 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.7515&lon=-104.7992&mi=10 - Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping) - Defining event: [Unknown: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470) - Highest injury: Fatal - Injuries: 1 fatal - Status: Investigation ongoing - Investigation class: Class 3 - NTSB office: Central Region - Parties: FAA - Denver FSDO - NTSB case key (mKey): 195494 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN25FA040 - NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/195494/pdf - Page: https://openairdocs.org/ntsb/CEN25FA040 ## Preliminary report On November 15, 2024, about 1000 mountain standard time (MST), a Beech 35-B33, N285BW, was destroyed when it was involved in an accident near Nunn, Colorado. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The flight originated from Chadron Municipal Airport (KCDR), Chadron, Nebraska, with an intended destination of Platte Valley Airport (18V), Hudson, Colorado; a distance of about 180 nautical miles (nm). No ADS-B, radar data, or ATC communications were obtained at the time of the on site investigation. Day visual meteorological conditions prevailed along the entire route of flight. The accident site was in a farm field about 3.5 miles north-northwest of Nunn, Colorado, about 20 nm west of a direct route between the start point and intended destination. The debris field was roughly 500 ft long by 400 ft wide. The initial point of impact contained a fragment of the left wingtip fuel tank fairing. A line of disturbed dirt continued from the initial point of impact for about 25 ft to a 17-foot-long impact crater. The line of disturbed dirt continued beyond the crater another 10-15 ft. Fragments of the outboard section of left wing and other airplane components were strewn throughout the debris field leading up to the main wreckage which was located about 258 ft from the initial point of impact. All the major components of the airplane were accounted for at the accident site. No anomalies were noted in the examined airframe components. The No. 6 cylinder separated from the engine. The interior of the No. 6 cylinder and the valve faces looked normal. The No. 2 & 4 cylinders were displaced aft and had fractured the case of the engine open. Visual examination of the interior of the engine showed no signs of thermal distress; the camshaft appeared normal; and no signs of a pre-impact failure or malfunction were noted. The crankshaft counterweights were present and moved freely. The oil sump housing was fractured and the front third of the sump housing had separated; no pre-impact anomalies were noted inside. The propeller hub remained attached to the crankshaft flange but had fragmented. Pieces of the hub and both propeller blades were present in the debris field. The propeller blades both had blade twisting, leading edge nicks and gouges, chord wise scratching, and blade polishing. Spiral cracking was noted on the engine crankshaft just aft of the propeller mounting flange. A Garmin 396 was retained for further examination. The wreckage was scheduled to be recovered and stored for further examination. ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Unknown: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470) (defining event); cases with it: [Beech 35-B33, 6 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=1151406), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Aircraft - Registration: [N285BW](https://openairdocs.org/aircraft/N285BW), registered now, S/N CD-400, built 1961 (OpenAirDocs) - Reported make and model: BEECH 35-B33 - Registry model: [Beech 35-B33](https://openairdocs.org/model/beech-35-b33) (registry code 1151406) (OpenAirDocs) - Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: CD-400 - Year built: 1961 - Damage: Destroyed - Flight: Personal, Part 91 - Departed: CDR, Chadron, NE - Destination: 18V, Hudson, CO - Equipment: Handheld GPS, Electronic flight bag or handheld device, ADS-B, Stall warning system ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 34 °F, dew point 28 °F - Altimeter: 29.82 inHg - Observed at: KGXY, 20 nm away - METAR: KGXY 151656Z 09003KT 10SM CLR 01/M02 A2982 RMK AO2 SLP127 T00111022 FZRANO ## 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 20241115017729A](https://openairdocs.org/incident/20241115017729A), Nov 15, 2024: Beech 35-B33, Nunn, CO, Substantial damage, 1 fatal. On 11/15/2024 at approximately (10:30AM) hrs. (MDT), aircraft departed chadron municipal airport (kcdr), chadron, NE to platte valley airport (18V), hudson,… 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.