# NTSB DEN07LA127: Bellanca 7GCBC, N88247, Basin, WY, July 25, 2007 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: July 25, 2007, 08:45 local (14:45 UTC) - Place: Basin, WY - Coordinates: 44.411109, -108.16333 - Nearby events: https://openairdocs.org/map.md?lat=44.4111&lon=-108.1633&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report September 27, 2007 - Report: Approved by Office Director - Parties: FAA Flight Standards Field Office - NTSB case key (mKey): 66299 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN07LA127 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66299/pdf - Page: https://openairdocs.org/ntsb/DEN07LA127 ## Probable cause The carburetor icing causing a partial loss of engine power, and the pilot's failure to maintain aircraft control leading to the inadvertent stall. A factor contributing to the accident was the conditions conducive for carburetor icing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - nonmechanical, go-around (vfr) - ice (cause) - weather condition - carburetor icing conditions (contributing factor) - Loss of control - in flight, go-around (vfr) - aircraft control - not maintained, pilot in command (cause) - stall/mush - encountered, pilot in command (cause) - In flight collision with object, descent - uncontrolled - object - tree(s) ## Analysis According to the pilot he was too high during the approach to land and initiated a go-around. The pilot reported a temporary power failure and a stall of the left wing. The airplane impacted several trees and came to rest in a nose down attitude, resulting in substantial damage. An examination of the airplane revealed no anomalies. The temperature was 73 degrees Fahrenheit (F), and the dewpoint was 57 degrees F. According to the carburetor icing chart, the conditions were conducive for "serious icing at glide power." ## Factual narrative On July 25, 2007, approximately 0845 mountain daylight time, a Bellanca 7GCBC, N88247, piloted by a private pilot, was substantially damaged when it impacted trees while descending near Dorsey Creek Ranch Airport (0WY1), Basin, Wyoming. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 Code of Federal Regulations Part 91 without a flight plan. The pilot sustained serious injuries. The cross-country flight departed Thermopolis, Wyoming, approximately 0800 and was en route to 0WY1. According to the Pilot Aircraft Accident Report Form submitted by the pilot, he had flown around scattered rain showers while en route to Basin, Wyoming. The pilot reported that he was too high during the approach to land and initiated a go-around. The pilot reported a "temporary power failure" and a stall of the left wing. The Big Horn County Sheriff’s Office reported that the airplane impacted several Russian Olive trees, approximately 30 to 35 feet in height, and came to rest in a nose down attitude. The fuselage and engine were crushed aft and both wings were crushed aft and wrinkled. The FAA airworthiness inspector who examined the airplane reported no anomalies. The South Big Horn County Airport weather observation station, located 7 miles to the northeast of Basin, recorded the temperature as 73 degrees Fahrenheit (F), and the dewpoint as 57 degrees F. According to the carburetor icing chart, the conditions were conducive for "serious icing at glide power." ## Aircraft - Registration: [N88247](https://openairdocs.org/deregistered/N88247-2022-11-05), registration cancelled 2022-11-05, S/N 748-74, built 1974 (OpenAirDocs) - Reported make and model: Bellanca 7GCBC - Registry model: [Bellanca 7GCBC](https://openairdocs.org/model/bellanca-7gcbc) (registry code 1220601) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 748-14 - Airframe hours: 2271 - Engines: Lycoming O-320-A2D 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Aerobatic; Standard, Normal - Last inspection: Annual, September 1, 2004 - Departed: PVT, THERMOPOLIS, WY - Destination: 0WY1, Basin, WY - Airport: 0WY1, Dorsey Creek Ranch Airport ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 74; injuries: serious; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; seat: front; flight hours: 2,050 as pilot in command, 15 in the last 90 days, 5 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 110° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 57 °F - Altimeter: 29.98 inHg - Observed at: KGEY, 7 nm away ## Other investigations on N88247 (1) 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. - [NTSB DEN82DA041](https://openairdocs.org/ntsb/DEN82DA041), Mar 11, 1982: Bellanca 7GCBC (N88247), Thermopolis, WY, substantial damage 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.