# NTSB DEN07CA039: Cessna T210M, N6051N, Broomfield, CO, December 25, 2006 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: December 25, 2006, 14:45 local (21:45 UTC) - Place: Broomfield, CO - Coordinates: 39.908332, -105.116668 - Nearby events: https://openairdocs.org/map.md?lat=39.9083&lon=-105.1167&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report March 26, 2007 - Report: Approved by Office Director - Parties: FAA Flight Standards District Office - NTSB case key (mKey): 65074 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN07CA039 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65074/pdf - Page: https://openairdocs.org/ntsb/DEN07CA039 ## Probable cause the failure of the mechanic to comply with the required replacement schedule resulting in the failure of the hydraulic line and the resulting gear up landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, cruise - normal - hydraulic system,line - failure (cause) - maintenance,replacement - not complied with, other maintenance personnel (cause) - Wheels up landing, landing - emergency procedure - attempted, pilot in command - wheels up landing - performed, pilot in command ## Analysis According to the pilot, the landing gear would not extend while attempting to land. The pilot elected to divert to another airport while he attempted to trouble-shoot the landing gear issue. The pilot was able to get the nose landing gear to extend but was unable to extend the main landing gear. The pilot performed a normal landing with the main landing gear up and the nose wheel extended. The airplane came to rest, canted to the left with the left wing resting in the snow, resulting in substantial damage. Examination of the airplane revealed that the hydraulic hose for the landing gear system had failed, resulting in the loss of hydraulic fluid. A review of the maintenance records revealed no evidence that the hose had ever been replaced. Cessna Aircraft Company issued Service Bulletin SEB92-8, with regard to the replacement of hydraulic landing gear hoses. In addition, the Cessna Model 210 and T210 service manual states that the hydraulic hoses should be replaced every 5 years. An examination of the remaining systems revealed no anomalies. ## Factual narrative According to the pilot, the landing gear would not extend while attempting to land in Aspen, Colorado. The pilot elected to divert to Jefferson County Airport while he attempted to trouble-shoot the landing gear issue. The pilot was able to get the nose landing gear to extend but was unable to extend the main landing gear. The pilot performed a normal landing to runway 29R (9,000 feet by 100 feet, asphalt) with the main landing gear up and the nose wheel extended. The airplane came to rest, canted to the left with the left wing resting in the snow. The left horizontal stabilizer was crushed up, during the landing bending the spar. Examination of the airplane revealed that the hydraulic hose for the landing gear system (part number 52178-4-0095A) had failed, resulting in the loss of hydraulic fluid. A review of the maintenance records revealed no evidence that the hose had ever been replaced. On April 17, 1992, Cessna Aircraft Company issued Service Bulletin (SB) SEB92-8, with regard to the replacement of hydraulic landing gear hoses. The SB stated that compliance is "mandatory; shall be accomplished within the next 100 hours of operation or at the next annual inspection, whichever occurs first..." In addition, the Cessna Model 210 and T210 service manual states that the hydraulic hoses should be replaced every 5 years. An examination of the remaining airplane systems revealed no anomalies. ## Aircraft - Registration: [N6051N](https://openairdocs.org/deregistered/N6051N-2022-09-03), registration cancelled 2022-09-03, S/N 21062919, built 1978 (OpenAirDocs) - Reported make and model: Cessna T210M - Registry model: [Cessna T210M](https://openairdocs.org/model/cessna-t210m) (registry code 2073451) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 21062919 - Airframe hours: 3977.4 - Engines: Continental TSIO-520-R 310 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, March 1, 2006 - Departed: EGE, EAGLE, CO - Destination: BJC, Broomfield, CO - Airport: BJC, Jefferson County Airport, runway 29R, 9,000 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 62; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review June 1, 2006; seat: left; flight hours: 3,332 total, 1,638 in this make and model, 11 in the last 90 days, 7 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 18 knots - Visibility: 60 statute miles - Lowest ceiling: 14,000 ft broken - Temperature: 46 °F, dew point 23 °F - Altimeter: 30.04 inHg - Observed at: KBJC, 1 nm away ## 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 20061225030549A](https://openairdocs.org/incident/20061225030549A), Dec 25, 2006: Cessna T210M, Denver, CO, Substantial damage. (-23) The pilot and only occupant was unable to get a safe gear condition on approach to aspen, CO. He diverted to jeffco airport (bjc) broomfield, CO due to… 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.