# NTSB LAX96LA333: Cessna 170B, N2916D, Concord, CA, September 13, 1996 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: September 13, 1996, 11:06 local (18:06 UTC) - Place: Concord, CA - Coordinates: 37.99998, -122.030891 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.0000&lon=-122.0309&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report December 16, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 29560 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX96LA333 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/29560/pdf - Page: https://openairdocs.org/ntsb/LAX96LA333 ## Probable cause The pilot's failure to maintain directional control. The 40-degree crosswind component was a factor in this accident. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - weather condition - crosswind (contributing factor) - directional control - not maintained, pilot in command (cause) - Main gear collapsed, landing - roll - landing gear,wheel - separation - landing gear,wheel - overload - Dragged wing,rotor,pod,float or tail/skid, landing - roll ## Analysis The pilot lost directional control of the conventional gear airplane during the landing roll. He reported that on touchdown the surface winds shifted 90 degrees to the runway, and that he was unable to maintain directional control. The reported surface winds showed that a right 40 degrees crosswind component at 13 knots existed at the time of the accident. ## Factual narrative On September 13, 1996, at 1106 hours Pacific daylight time, a Cessna 170, N2916D, dragged its left wing during the landing roll on runway 19L at Concord Airport, Concord, California. The pilot was completing a visual flight rules personal flight from Byron, California. The airplane, registered to and operated by the pilot, sustained substantial damage. The certificated private pilot, the sole occupant was not injured. Visual meteorological conditions prevailed. The flight originated at Concord Airport at 1015 and departed Byron Airport at 1050. The pilot reported in a telephone interview conducted on September 13, 1996, that he had flown to Byron on a personal flight. He departed Byron Airport and flew directly to Concord Airport. While on final approach, he was applying the applicable flight controls to correct for a southwesterly crosswind. When the airplane crossed over the threshold, the winds ceased and he neutralized the flight controls. During the landing roll, the southwesterly gust of wind unexpectedly raised the right wing and the left wing struck the runway. The airplane then veered to the left and came to rest on the dirt area east of the runway. The pilot reported no preimpact malfunctions or failures. The pilot said in his accident report that on touchdown he observed the windsock swing 90 degrees to the runway. He applied maximum aileron and rudder correction to maintain directional control, but without success. The right wheel separated within 2 and 3 seconds and the left wing struck the ground. The reported surface winds were 230 degrees at 13 knots. ## Aircraft - Registration: [N2916D](https://openairdocs.org/aircraft/N2916D), registered now, S/N 26859, built 1955 (OpenAirDocs) - Reported make and model: Cessna 170B - Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 26859 - Engines: Continental O-300-A 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Bill Burr - Airworthiness certificate: Standard, Normal - Last inspection: Annual, November 1, 1995, 13 hours before - Departed: 4Q5, BYRON, CA - Destination: CCR - Airport: CCR, Buchanan Field, runway 19L, 2,768 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 63; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 900 total, 300 in this make and model, 840 as pilot in command, 7 in the last 90 days, 4 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 230° at 13 knots - Visibility: 20 statute miles - Lowest ceiling: 3,000 ft broken - Temperature: 68 °F, dew point 54 °F - Altimeter: 29.00 inHg - Observed at: CCR ## 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 19960913028399A](https://openairdocs.org/incident/19960913028399A), Sep 13, 1996: Cessna 170B, Concord, CA, Substantial damage. Dragged a wing landing in right quartering crosswind. Blamed wind gust. Exited runway. 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.