# NTSB ANC07LA066: Beech 58, N820GW, Northway, AK, July 12, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 12, 2007, 12:53 local (20:53 UTC) - Place: Northway, AK - Coordinates: 62.952777, -141.928894 - Nearby events: https://openairdocs.org/map.md?lat=62.9528&lon=-141.9289&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 4 uninjured - Status: Completed, report March 31, 2008 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: Federal Aviation Administration - NTSB case key (mKey): 66206 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC07LA066 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66206/pdf - Page: https://openairdocs.org/ntsb/ANC07LA066 ## Probable cause The collapse of the landing gear during the landing roll for an undetermined reason. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Gear collapsed, landing - roll - landing gear,normal retraction/extension assembly - disengaged - reason for occurrence undetermined (cause) - terrain condition - runway ## Analysis The airline transport pilot was landing a twin-engine retractable wheel airplane on a gravel-covered runway while on a cross-country personal flight. He said that after an uneventful touchdown, the right main landing gear collapsed, followed by the left main landing gear, and finally the nose landing gear. The airplane sustained substantial damage to the wings and fuselage. A postaccident inspection of the airplane by an FAA airworthiness inspector disclosed a fractured rod end assembly, which was part of the landing gear extension and retraction system. The FAA inspector noted that he was unable to determine whether the fractured rod end assembly was a factor in the landing gear collapse, or if the rod end fractured as a result of the landing gear collapse. ## Factual narrative On July 12, 2007, about 1253 Alaska daylight time, a twin-engine Beech Baron 58 airplane, N820GW, sustained substantial damage when the landing gear collapsed after landing at the Northway Airport, Northway, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight under Title 14, CFR Part 91, when the accident occurred. The airline transport certificated pilot and the three passengers were not injured. Visual meteorological conditions prevailed, and a VFR flight plan was filed. The flight departed the Whitehorse Airport, Whitehorse, Canada, about 1045. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on July 12, the pilot reported that after an uneventful touchdown on the gravel-covered runway, the right main landing gear collapsed, followed by the left main landing gear, and finally the nose landing gear. The pilot reported that there were no known problems with the landing gear prior to the accident. Airport maintenance personnel removed the accident airplane from Runway 23, and transported it to a parking area. During a telephone conversation with the NTSB IIC on July 13, the Northway Federal Aviation Administration (FAA) Flight Service Station (FSS) specialist on duty at the time of the accident reported that the landing gear on the accident airplane appeared to be extended during the final landing approach. On July 13, a Federal Aviation Administration (FAA) airworthiness inspector, Fairbanks Flight Standards District Office (FSDO), examined the accident airplane, and subsequently discovered a fractured rod end assembly associated with the landing gear extension and retraction system. The inspector reported that he was unable to positively determine whether the fractured rod end assembly was a factor in the landing gear collapse, or if the rod end fractured as the gear collapse. The FAA inspector reported structural damage to the accident airplane's fuselage and wings. ## Aircraft - Registration: [N820GW](https://openairdocs.org/deregistered/N820GW-2013-02-27), registration cancelled 2013-02-27, S/N TH-13, built 1970 (OpenAirDocs) - Reported make and model: Beech 58 - Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (registry code 1152740) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: TH-13 - Airframe hours: 4497.4 - Engines: Continental IO-520 285 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Glenn R. Carwelll - Registered owner: Promenfly Corp. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 1, 2007, 29 hours before - Departed: YXY, WHITEHORSE YT - Destination: ORT, Northway, AK - Flight plan: VFR - Airport: ORT, Northway, runway 23, 5,100 × 100 ft, gravel ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 63; injuries: none; military, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review November 1, 2005; seat: left; flight hours: 2,725 total, 1,850 in this make and model, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: 15,000 ft broken - Temperature: 66 °F, dew point 43 °F - Altimeter: 29.81 inHg - Observed at: ORT ## 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 20070712013019A](https://openairdocs.org/incident/20070712013019A), Jul 12, 2007: Beech 58, Northway, AK, Substantial damage. (-23) [privacy data omitted] during landing the right gear was observed to collapse and the aircraft slide along the gravel runway. Discovered rod end (p/n… 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.