# NTSB GAA18CA079: Boeing A75N1(PT17), N1431C, Chino, CA, December 3, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: December 3, 2017, 11:09 local (19:09 UTC) - Place: Chino, CA - Coordinates: 33.974445, -117.637222 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.9744&lon=-117.6372&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 14, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 96462 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA079 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/96462/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=96462 - Page: https://openairdocs.org/ntsb/GAA18CA079 ## Probable cause The pilot’s failure to maintain directional control during a touch-and-go landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Boeing A75N1(PT17), 27 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=1380134), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Boeing A75N1(PT17), 33 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=1380134), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: surface speed/braking](https://openairdocs.org/ntsb-findings/01062045): Aircraft › Aircraft oper/perf/capability · Incorrect use/operation; cases with it: [Boeing A75N1(PT17), 2 cases](https://openairdocs.org/ntsb-findings/01062045/cases.md?model=1380134), [All aircraft, 238 cases](https://openairdocs.org/ntsb-findings/01062045/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Boeing A75N1(PT17), 4 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=1380134), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Boeing A75N1(PT17), 32 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=1380134), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Takeoff: Dragged wing/rotor/float/other](https://openairdocs.org/ntsb-events/093); cases with it: [Boeing A75N1(PT17), 2 cases](https://openairdocs.org/ntsb-events/093/sequence.md?model=1380134), [All aircraft, 319 cases](https://openairdocs.org/ntsb-events/093/sequence.md) ## Analysis The pilot reported that the tailwheel-equipped biplane bounced during the initial touchdown of a three-point, touch-and-go landing. He added that the biplane settled back onto the runway and that he continued to maintain the runway centerline. Subsequently, when he raised the tail for takeoff, the biplane veered sharply to the right, and the lower left wing struck the ground. The biplane sustained substantial damage to the lower left aileron. The pilot reported that there were no preaccident mechanical failures or malfunctions with the biplane that would have precluded normal operation. The pilot added that he may have "accidently hit the right brake" during the landing roll. ## Factual narrative The pilot reported that, the tailwheel-equipped biplane bounced during the initial touchdown of a three point touch-and-go landing. He added that, the biplane settled back onto the runway and he continued to maintain the runway centerline. Subsequently, when he raised the tail for takeoff, the biplane veered sharply to the right and the lower left wing struck the ground. The biplane sustained substantial damage to the lower left aileron. The pilot reported that there were no preaccident mechanical failures or malfunctions with the biplane that would have precluded normal operation. The pilot added that he may have "accidently hit the right brake" during the landing roll. ## Aircraft - Registration: [N1431C](https://openairdocs.org/aircraft/N1431C), registered now, S/N 75-1702, built 1941 (OpenAirDocs) - Reported make and model: BOEING A75N1(PT17) (UNDESIGNAT) - Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs) - Registry engine: [Continental W670 series](https://openairdocs.org/engine/continental-w670-series) (registry code 17018, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 75-1702 - Year built: 1941 - Airframe hours: 3363 - Engines: Continental W670-6N 220 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal; Standard, Aerobatic - Last inspection: Annual, October 5, 2017 - Departed: AJO, CORONA, CA - Destination: CNO, Chino, CA - Airport: CNO, Chino, runway 26R, 4,858 × 150 ft, asphalt - Equipment: ADS-B ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 68; injuries: none; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review July 14, 2016; seat: rear; restraint: 4-point; flight hours: 4,450 total, 10 in this make and model, 4,100 as pilot in command, 15 in the last 90 days, 9 in the last 30 days - Flight instructor; age 66; injuries: none; flight instructor, airline transport; airplane ratings: multi-engine sea, single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane, helicopter; medical: basicmed, without waivers/limitations; last flight review June 22, 2017; seat: front; restraint: 4-point; flight hours: 5,400 total, 420 in this make and model, 5,025 as pilot in command, 45 in the last 90 days, 16 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Temperature: 66 °F, dew point 50 °F - Altimeter: 30.04 inHg - Observed at: KCNO ## 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 20171203023519A](https://openairdocs.org/incident/20171203023519A), Dec 3, 2017: Boeing A75N1(PT17), Chino, CA, Substantial damage. On December 03/ 2017 N1431C was cleared for the option for landing on runway 26R cno (Chino) airport and went off the runway into a ground loop. There was no… ## Other investigations on N1431C (1) 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. - [NTSB WPR09CA328](https://openairdocs.org/ntsb/WPR09CA328), Jul 5, 2009: Boeing A75N1 (N1431C), Gig Harbor, WA, substantial damage. Probable cause: The pilot's inadequate compensation for the crosswind and failure to maintain directional control. ## Docket (2 files) The files NTSB released with the investigation on February 1, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=96462. 1.4 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 934 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459738&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Photo (item 2, .PDF, 474 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40459739&FileExtension=.PDF&FileName=Accident%20Photo-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.