# NTSB CHI07LA064: Cessna 414A, N6631C, Dickinson, ND, February 1, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: February 1, 2007, 16:15 local (23:15 UTC) - Place: Dickinson, ND - Coordinates: 46.7972222222222, -102.801944444444 - Nearby events: https://openairdocs.org/map.md?lat=46.7972&lon=-102.8019&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report January 31, 2008 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 65269 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI07LA064 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65269/pdf - Page: https://openairdocs.org/ntsb/CHI07LA064 ## Probable cause The undetermined failure of the emergency landing gear system and the retraction of the right main landing gear during landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, approach - landing gear - undetermined (cause) - landing gear,emergency extension assembly - undetermined (cause) - Gear retraction on ground, landing - flare/touchdown - terrain condition - runway ## Analysis The airplane received substantial damage when the right main landing gear retracted upon landing. The pilot reported that when he attempted to lower the landing gear during approach, both main landing gear indications did not show a down and locked condition. After several attempts at recycling the landing gear, the pilot tried to use the emergency gear extension method, but both main landing gear indications were not down and locked. The pilot then contacted an individual at the airport who informed the pilot that his main gear appeared to be down. The pilot then attempted to land the airplane, during which the right main gear retracted. Post accident examination of the landing gear system revealed no anomalies. ## Factual narrative On February 1, 2007, about 1615 mountain standard time, a Cessna 414A, N6631C, piloted by a private pilot, received substantial damage when the right main landing gear retracted upon landing on runway 25 (4,700 feet by 75 feet, grooved asphalt) at Dickinson - Theodore Roosevelt Regional Airport (DIK), Dickinson, North Dakota. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 business flight was operating on an instrument rules flight plan. The pilot was uninjured. The flight originated from Billings Logan International Airport, Billings, Montana, about 1445, en route to DIK. The pilot reported that as he neared DIK, he attempted to lower the landing gear. The pilot reported that he received a down and locked indication from the nose gear; however, both main landing gear did not show a down and locked indication. After several attempts at recycling the landing gear, the pilot tried to use the emergency gear extension method but still did not receive a down and locked indication for the main gear. The pilot then contacted an individual at the airport who informed the pilot that his main gear appeared to be down. The pilot then landed the airplane, during which the right main gear retracted. According the Federal Aviation Administration inspector, an Airframe & Powerplant (A&P) mechanic with Inspection Authorization (IA) reported that the airplane was placed on jacks in order to cycle the landing gear system. The landing gear system operated normally, no anomalies were detected, and no repairs were made to the landing gear system. ## Aircraft - Registration: [N6631C](https://openairdocs.org/aircraft/N6631C), registered now, S/N 414A0038, built 1978 (OpenAirDocs) - Reported make and model: Cessna 414A - Registry model: [Cessna 414A](https://openairdocs.org/model/cessna-414a) (registry code 2075907) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 414A0038 - Engines: Continental TSIO-520 325 horsepower reciprocating - Damage: Substantial damage - Flight: Business, Part 91 - Registered owner: D Porter Enterprises LLC - Airworthiness certificate: Standard, Normal - Departed: BIL, Billings, MT - Destination: DIK, Dickinson, ND - Flight plan: IFR - Airport: DIK, Dickinson Muni, runway 25, 4,700 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 54; injuries: none; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, without waivers/limitations; seat: left; flight hours: 4,268 total, 818 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 310° at 22 knots - Visibility: 7 statute miles - Lowest ceiling: none - Temperature: -0 °F, dew point -9 °F - Altimeter: 29.95 inHg - Observed at: DIK ## 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 20070201002329A](https://openairdocs.org/incident/20070201002329A), Feb 1, 2007: Cessna 414A, Dickinson, ND, Substantial damage. (-23) Pilot lowered gear in preparation for landing, and did not get a successful gear down and locked indication. He cycled the gear several times and only… 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.