# NTSB GAA18CA050: Boeing A75N1(PT17), N69656, Rosamond, CA, November 19, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: November 19, 2017, 15:00 local (23:00 UTC) - Place: Rosamond, CA - Coordinates: 38.499511, -122.760391 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.4995&lon=-122.7604&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report May 14, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 96343 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA050 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/96343/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=96343 - Page: https://openairdocs.org/ntsb/GAA18CA050 ## Probable cause The pilot’s failure to maintain directional control during the landing roll. ## 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) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: 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) - [Landing-landing roll: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Boeing A75N1(PT17), 7 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=1380134), [All aircraft, 1,422 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Boeing A75N1(PT17), 14 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=1380134), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Boeing A75N1(PT17), 11 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=1380134), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis According to the pilot in the tailwheel-equipped, high-performance biplane, during the landing roll, he applied the brakes to decelerate for the full-stop landing. When he did, the biplane swerved to the left, but it was corrected by letting off the brakes and applying right rudder. The biplane then veered to the left again, but the pilot was not able to correct it with full right rudder and brake application. The biplane exited the left side of the runway and nosed over. The biplane sustained substantial damage to the rudder. The pilot reported that there were no preaccident mechanical malfunctions or failures with the biplane that would have precluded normal operation. ## Factual narrative According to the pilot in the tailwheel-equipped, high performance bi-plane, during the landing roll the he applied the brakes to decelerate for the full stop landing. When he did, the bi-plane swerved to the left, but was corrected by letting off the brakes and applying right rudder. The bi-plane then veered to the left again but did not correct with full right rudder and brake application. The bi-plane exited the left side of the runway and nosed over. The bi-plane sustained substantial damage to the rudder. The pilot reported that there were no preaccident mechanical malfunctions or failures with the bi-plane that would have precluded normal operation. ## Aircraft - Registration: [N69656](https://openairdocs.org/aircraft/N69656), registered now, S/N 75-4912, built 1943 (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: 75-4912 - Year built: 1943 - Airframe hours: 4215.8 - Engines: Continental W670-6A 220 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal; Standard, Aerobatic - Last inspection: Annual, October 8, 2017 - Departed: L00, ROSAMOND, CA - Destination: L00, Rosamond, CA - Airport: L00, Rosamond Skypark, runway 08, 3,600 × 50 ft, asphalt - Equipment: None ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 38; injuries: none; airline transport, commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review November 16, 2017; seat: rear; restraint: 4-point; flight hours: 3,907 total, 72 in this make and model, 2,371 as pilot in command, 47 in the last 90 days, 31 in the last 30 days, 1 in the last 24 hours - Other flight crew; age 63; injuries: none; commercial; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: helicopter, airplane; medical: class 2, with waivers/limitations; last flight review October 15, 2017; seat: front; restraint: 4-point; flight hours: 22,000 total, 2 in this make and model, 17,000 as pilot in command, 95 in the last 90 days, 27 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 100° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 63 °F, dew point 3 °F - Altimeter: 30.07 inHg - Observed at: KWJF, 8 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 20171119019199A](https://openairdocs.org/incident/20171119019199A), Nov 19, 2017: Boeing A75N1(PT17), Rosamond, CA, Substantial damage. The pilot and passenger departed in N69656 at Rosamond sky park for a local flight. 15 minutes later they returned to the airport. During rollout the aircraft… ## Other investigations on N69656 (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 MKC67F0060](https://openairdocs.org/ntsb/MKC67F0060), Jul 19, 1966: Boeing A75N1 (N69656), Mcdonald, KS, substantial damage ## Docket (2 files) The files NTSB released with the investigation on April 2, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=96343. 4.7 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 4.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461494&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Photo (Courtesy of FAA) (item 2, .PDF, 1 photo, 652 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40461495&FileExtension=.PDF&FileName=Photo%20(Courtesy%20of%20FAA)-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.