# NTSB DFW06CA201: Cessna T210N, N6602C, San Angelo, TX, August 20, 2006 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 20, 2006, 14:15 local (19:15 UTC) - Place: San Angelo, TX - Coordinates: 31.3497222222222, -100.499722222222 - Nearby events: https://openairdocs.org/map.md?lat=31.3497&lon=-100.4997&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report November 29, 2006 - Report: Approved by Office Director - Parties: San Antonio, Texas - NTSB case key (mKey): 64376 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW06CA201 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/64376/pdf - Page: https://openairdocs.org/ntsb/DFW06CA201 ## Probable cause The failure of the landing gear to extend as result of a frayed electrical wire. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Gear collapsed, landing - flare/touchdown - gear extension - not possible, pilot in command (cause) - electrical system,electric wiring - frayed (cause) ## Analysis The 1,461-hour instrument rated private pilot reported that while departing on an instrument flight, the landing gear selector handle was raised to the retracted position and he observed that the green lights (down indication) went out, but the amber lights (up indication) did not illuminate. The pilot added that he attempted to use the manual gear pump to no avail. The pilot continued on with his proposed flight plan and advised air traffic control of his situation. The pilot recycled the gear selector handle several times and was not able to get a gear up or gear down indication. The pilot stated on the pilot/operator report (NTSB form 6120.1) "I elected to continue my planned flight to burn off as much fuel as reasonable, get as close to my destination as possible, and to reach good VFR conditions." The pilot made two low passes to have the tower personnel attempt to determine if the landing gear appeared down. The tower noted that the left main and the nose gear appeared to be down but that the right main gear appeared to be partially retracted and rotated. The pilot elected to land on an the 5,939-foot long, by 150-foot wide asphalt runway, which was oriented on a heading of 030 degrees. The airplane remained upright and slid-off of the runway to the right side when the airplane slowed. The pilot egressed without assistance and was not injured. A Federal Aviation Administrator inspector, who responded to the accident site, reported that the right main landing gear had collapsed and there was structural damage to the right horizontal stabilizer and the rudder. His investigation revealed that a frayed wire on the landing gear squat-switch terminal prevented power to the relay switch that controlled the landing gear activation. The weather at the airport at the time of the accident was reported as winds from 080 degrees at 8 knots, temperature of 34 degrees Celsius, with an altimeter setting of 30.03 inches of Mercury. ## Factual narrative The 1,461-hour instrument rated private pilot reported that while departing on an instrument flight, the landing gear selector handle has raised to the retracted position and he observed that the green lights (down indication) went out but the amber lights (up indication) did not illuminate. The pilot added that he attempted to use the manual gear pump to no avail. The pilot continued on with his proposed flight plan and advised air traffic control of his situation. The pilot recycled the gear selector handle several times and was not able to get a gear up or gear down indication. The pilot stated on the pilot/operator report (NTSB form 6120.1) "I elected to continue my planned flight to burn off as much fuel as reasonable, get as close to my destination as possible, and to reach good VFR conditions." The pilot made two low passes to have the tower personnel attempt to determine if the landing gear appeared down. The tower noted that the left main and the nose gear appeared to be down but that the right main gear appeared to be partially retracted and rotated. The pilot elected to land on an the 5,939-foot long, by 150-foot wide asphalt runway, which was oriented on a heading of 030 degrees. The airplane remained upright and slid-off of the runway to the right side when the airplane slowed. The pilot egressed without assistance and was not injured. A Federal Aviation Administrator inspector, who responded to the accident site, reported that the right main landing gear had collapsed and there was structural damage to the right horizontal stabilizer and the rudder. His investigation revealed that a frayed wire on the landing gear squat-switch terminal prevented power to the relay switch that controlled the landing gear activation. The weather at the airport at the time of the accident was reported as winds from 080 degrees at 8 knots, temperature of 34 degrees Celsius, with an altimeter setting of 30.03 inches of Mercury. ## Aircraft - Registration: [N6602C](https://openairdocs.org/aircraft/N6602C), registered now, S/N 21063926, built 1980 (OpenAirDocs) - Reported make and model: Cessna T210N - Registry model: [Cessna T210N](https://openairdocs.org/model/cessna-t210n) (registry code 2073456) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 21063926 - Airframe hours: 7382 - Engines: Teledyne Continental TSIO-520-R 310 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 1, 2006, 79 hours before - Departed: TEX, Telluride, CO - Destination: SAT, San Antonio, TX - Flight plan: IFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; seat: left; flight hours: 1,461 total, 1,231 in this make and model, 1,301 as pilot in command, 50 in the last 90 days, 20 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 80° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 93 °F, dew point 63 °F - Altimeter: 30.03 inHg - Observed at: SJT ## 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 20060820018469A](https://openairdocs.org/incident/20060820018469A), Aug 20, 2006: Cessna T210N, San Angelo, TX, Substantial damage. (-23) On 08/10/06, the pilot of Cessna T210N, N6602C, departed telluride, Colorado on a flight to san antonio, Texas. After takeoff the pilot was unable to get… 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.