# NTSB SEA05CA035: Cessna 310J, N310RA, Davenport, WA, January 3, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: January 3, 2005, 12:45 local (20:45 UTC) - Place: Davenport, WA - Coordinates: 47.609561, -122.299324 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=47.6096&lon=-122.2993&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 30, 2005 - Report: Approved by Office Director - Parties: Seattle, WA - NTSB case key (mKey): 60845 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA05CA035 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/60845/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=60845 - Page: https://openairdocs.org/ntsb/SEA05CA035 ## Probable cause The pilot's failure to maintain adequate airspeed during landing with airframe ice, which resulted in an inadvertent stall and hard landing. Factors were the icing conditions and the airframe ice. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Hard landing, landing - flare/touchdown - weather condition - icing conditions (contributing factor) - airframe - ice (contributing factor) - airspeed - not maintained, pilot in command (cause) - stall - encountered, pilot in command - aircraft performance - deteriorated ## Analysis The flight encountered light mixed icing during descent. The airplane was in icing conditions for about 15 minutes. The pilot used the de-icing boots during the icing encounter and cycled the boots for the last time on downwind leg for landing. During the landing flare, he reduced power over the threshold about 15 feet agl, and the airplane stalled at a higher than normal airspeed resulting in a hard landing. The pilot stated that the accident could have been prevented by keeping power and airspeed up until touchdown when landing an airplane which has encountered icing conditions and retained some airframe ice. ## Factual narrative On January 3, 2005, at 1245 Pacific standard time, a Cessna 310J, N310RA, sustained substantial damage during a hard landing at Davenport Municipal Airport, Davenport, Washington. The private pilot and the passenger were not injured. The airplane was registered to Alldredge Aviation of Auburn, Washington, and operated by the pilot. An IFR flight plan was filed for the personal cross country flight from Auburn to Davenport. The flight was conducted under Title 14 CFR Part 91 and departed Auburn at 1130. Instrument meteorological conditions prevailed for the descent into Davenport, and visual meteorological conditions prevailed on the ground at Davenport. According to the pilot, the flight encountered light mixed icing during descent. The airplane was in icing conditions for about 15 minutes. The pilot used the de-icing boots during the icing encounter and cycled the boots for the last time on downwind leg for landing. During the landing flare, he reduced power over the threshold about 15 feet agl, and the airplane stalled at a higher than normal airspeed resulting in a hard landing. The propeller tips were bent, and there was engine nacelle and wing skin buckling. The pilot stated that the accident could have been prevented by keeping power and airspeed up until touchdown when landing an airplane which has encountered icing conditions and retained some airframe ice. ## Aircraft - Registration: [N310RA](https://openairdocs.org/deregistered/N310RA-2019-11-29), registration cancelled 2019-11-29, S/N 310J0119, built 1965 (OpenAirDocs) - Reported make and model: Cessna 310J - Registry model: [Cessna 310J](https://openairdocs.org/model/cessna-310j) (registry code 2074226) (OpenAirDocs) - Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 310J0119 - Engines: Teledyne Continental IO-470U reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Richard W. Alldredge - Registered owner: Alldredge Aviation - Airworthiness certificate: Standard, Normal - Departed: S50, Auburn, WA - Destination: 68S, Davenport, WA - Flight plan: IFR - Airport: 68S, Davenport Municipal, runway 05 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 62; injuries: none; private; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 3; flight hours: 1,830 total, 471 in this make and model, 1,699 as pilot in command, 28 in the last 90 days, 9 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 5 statute miles - Lowest ceiling: 1,700 ft overcast - Temperature: 19 °F - Altimeter: 30.18 inHg ## 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 20050103000699A](https://openairdocs.org/incident/20050103000699A), Jan 3, 2005: Cessna 310J, Davenport, WA, Substantial damage. (-23) On January 3, 2005 the pilot [privacy data omitted] a private pilot, was acting as pilot in command of N310RA, a 1965 Cessna 310-J aircraft. One… ## Docket (1 files) The files NTSB released with the investigation on February 4, 2005, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=60845. 276 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 276 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40422462&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF 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.