# NTSB WPR12LA189: Cessna 172D, N2559U, Beckwourth, CA, April 28, 2012 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: April 28, 2012, 12:10 local (19:10 UTC) - Place: Beckwourth, CA - Coordinates: 39.493331, -120.17028 - Nearby events: https://openairdocs.org/map.md?lat=39.4933&lon=-120.1703&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: Serious injuries - Injuries: 1 serious, 1 uninjured - Status: Completed, report July 18, 2013 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 83501 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR12LA189 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/83501/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=83501 - Page: https://openairdocs.org/ntsb/WPR12LA189 ## Probable cause The pilot’s failure to maintain sufficient airspeed during initial climb, which resulted in a loss of airplane control. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna 172D, 1 case](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=2072410), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 172D, 4 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072410), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Cessna 172D, 5 cases](https://openairdocs.org/ntsb-events/240/sequence.md?model=2072410), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Uncontrolled descent: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna 172D, 11 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2072410), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot was departing from a 2,300-foot-long dirt airstrip. The pilot reported that, based on his pretakeoff calculations, he configured the airplane with 10 degrees of flaps for a soft-field takeoff and that, due to the soft terrain, the airplane required a longer-than-normal takeoff distance. Shortly after rotation, the pilot initiated a gradual left turn. According to a witness, when the airplane was about 100 feet above the ground, it rolled farther left, to about a 90-degree bank. Unable to climb or maintain altitude, the pilot leveled the wings and pitched the nose down in an attempt to regain airspeed; however, he realized there was insufficient altitude, and he landed the airplane in a field. During the landing roll, the airplane nosed over. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative History of Flight On April 28, 2012, at 1210 Pacific daylight time, a Cessna 172D, N2559U, registered to and operated by the pilot, impacted terrain during takeoff from a private airstrip near Beckwourth, California. The private pilot was not injured; the passenger sustained serious injuries. The airplane was substantially damaged. Visual meteorological conditions prevailed and no flight plan was filed. The pilot was operating the airplane under Title 14 Code of Federal Regulations Part 91. He was departing a private airstrip and was destined for Nervino Airport, Beckwourth, California. In a statement, the pilot reported that he was departing from a dirt airstrip that was about 2,300 feet in length and the elevation was 4,879 feet mean sea level. The wind was estimated from the northeast at 3 to 4 knots, and the temperature was near 60 degrees. The weight and balance calculation showed a takeoff weight of 1,922 pounds and a center of gravity of 38.2 which was in the utility category. His calculations from the pilot operating handbook showed a ground run of 812 feet and recommended 10 degrees of flaps for the soft field. The rotation speed was calculated at 55/60 miles per hour. Due to the soft field, he believed that he needed a longer takeoff roll to obtain 55 miles per hour. Before takeoff, the pilot extended the flaps 10 degrees and leaned the mixture. Shortly after rotation, the pilot initiated a gradual turn to the left and the airplane rolled to the left. The pilot leveled the airplane, but the airplane lost airspeed. He was unable to climb or maintain altitude. The pilot attempted to pitch the airplane down in order to increase speed and realized he did not have sufficient altitude. He then decided to land in a field. The airplane touched down for approximately 30 feet, bounced once, and then rolled for about 180 feet as the airplane slowed. He was able to hold the nosewheel out of the soft terrain. When the airplane slowed to 10 to 15 miles per hour, the nosewheel dug into the terrain and the airplane nosed over. The passenger's arm was broken. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. According to a witness, at the time of the accident he estimated the winds from 10 to 12 miles per hour, from east to west. The airplane was departing from the southwest to the northeast. The land owner had begun constructing the airstrip about three weeks prior to the accident and the property was not approved for an airstrip. The witness watched the airplane taxi from a building to the airstrip. The airplane powered and began departure to the northeast. The airplane climbed to approximately 100 feet in level flight, it appeared to bank 90 degrees to the left while maintaining altitude, and then the airplane lost altitude. The airplane became wings level prior to ground impact. The airplane traveled for about 100 feet before nosing over. Airplane Information The Cessna172D was manufactured in 1963 and the POH did not contain information on performance information related to non-hard surface runways. This information was not provided in the Cessna POHs until 1967. The 172H POH, which has identical performance numbers with the 172D, states, "For operation on a dry, grass runway, increase distances (both "ground run" and "total to clear 50 ft. obstacle") by 7% of the "total to clear 50 ft. obstacle" figure." Additional Information The Aircraft Owners and Pilots Association Safety Advisor, Mastering Takeoffs and Landings, notes the limitations of POH references on older aircraft and states that the performance numbers noted may decrease over time. The advisor states, “ASI [Air Safety Institute] recommends adding 50 percent to the POH takeoff or landing distance over a 50-foot obstacle.” The density altitude was calculated to be about 5,880 feet. ## Aircraft - Registration: [N2559U](https://openairdocs.org/aircraft/N2559U), registered now, S/N 17250159, built 1963 (OpenAirDocs) - Reported make and model: CESSNA 172D - Registry model: [Cessna 172D](https://openairdocs.org/model/cessna-172d) (registry code 2072410) (OpenAirDocs) - Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17250159 - Airframe hours: 2998 - Engines: Continental Engines O-300-D 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Utility; Standard, Normal - Last inspection: Annual, April 19, 2011, 61 hours before - Departed: Beckwourth, CA - Destination: O02, Nervino, CA - Airport: Private ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 63; injuries: none; private; airplane ratings: single-engine land; medical: class 2, with waivers/limitations; last flight review March 28, 2011; seat: left; flight hours: 582 total, 492 in this make and model, 534 as pilot in command, 32 in the last 90 days, 19 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 160° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 57 °F, dew point 30 °F - Altimeter: 30.14 inHg - Observed at: RTS, 24 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 20120428008389A](https://openairdocs.org/incident/20120428008389A), Apr 28, 2012: Cessna 172D, Beckwourth, CA, Substantial damage. The aircraft attempted to depart a 2400' private dirt airstrip located near Beckwourth, CA. The pilot departed northbound on a heading of 010 degrees,… ## Docket (4 files) The files NTSB released with the investigation on May 1, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=83501. 7.9 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 706 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40367514&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Witness Statement (item 2, .PDF, 44 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40387143&FileExtension=.PDF&FileName=Witness%20Statement-Redacted.PDF - AOPA Safety Advisor- Mastering Takeoffs and Landings (item 3, .PDF, 316 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40387151&FileExtension=.PDF&FileName=AOPA%20Safety%20Advisor-%20Mastering%20Takeoffs%20and%20Landings-Master.PDF - Photo 1. Airplane at Accident Site (Provided by Police) (item 4, .PDF, 6.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40367515&FileExtension=.PDF&FileName=Photo%201.%20Airplane%20at%20Accident%20Site%20(Provided%20by%20Police)-Master.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.