# NTSB WPR23LA050: Boeing A75N1(PT17), N75321, Long Beach, CA, October 26, 2022 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: October 26, 2022, 15:50, time zone not recorded - Place: Long Beach, CA - Coordinates: 33.81793, -118.15189 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.8179&lon=-118.1519&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: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - Parties: FAA - NTSB case key (mKey): 106394 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR23LA050 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/106394/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=106394 - Page: https://openairdocs.org/ntsb/WPR23LA050 ## Probable cause The pilot’s failure to maintain directional control during landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [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: 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) ## 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) ## Analysis The pilot of the tailwheel-equipped biplane reported a light left crosswind during the landing approach. He executed a mainwheel landing which he reported as smooth, however during the final stages of the landing rollout the airplane began to weathervane to the left. He attempted to correct with right rudder control, however just before the airplane stopped it ground looped to the right. The right wing impacted the ground and was substantially damaged. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N75321](https://openairdocs.org/aircraft/N75321), registered now, S/N 75-3523 (OpenAirDocs) - Reported make and model: BOEING A75N1(PT17) - 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: 75-3523 - Engines: Continental W670-6A 220 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Departed: KAJO, Corona, CA - Destination: KLGB, Long Beach, CA - Airport: KLGB, Long Beach Airport, runway 26R, 6,192 × 150 ft, asphalt - Equipment: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 40; injuries: none; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review March 3, 2022; flight hours: 3,200 total, 15 in this make and model, 3,100 as pilot in command, 40 in the last 90 days, 20 in the last 30 days, 6 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 7 knots - Visibility: 10 statute miles - Temperature: 72 °F, dew point 55 °F - Altimeter: 2990.00 inHg - Observed at: KLGB - METAR: METAR KLGB 262253Z 18007KT 10SM CLR 22/13 A2990 RMK AO2 SLP123 T02170128= ## Other investigations on N75321 (4) 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 FTW76DQH09](https://openairdocs.org/ntsb/FTW76DQH09), Sep 14, 1976: Boeing A75 (N75321), Tulia, TX, substantial damage - [NTSB FTW74DPJ04](https://openairdocs.org/ntsb/FTW74DPJ04), Aug 3, 1973: Boeing A75N1 (N75321), Minco, OK, substantial damage - [NTSB MKC71DCQ35](https://openairdocs.org/ntsb/MKC71DCQ35), Apr 25, 1971: Boeing A75N1 (N75321), Liberal, KS, substantial damage - [NTSB UNK64X2690](https://openairdocs.org/ntsb/UNK64X2690), Jul 6, 1964: Boeing A75N1 (N75321), Brangeville, ID, substantial damage ## Docket (2 files) The files NTSB released with the investigation on January 31, 2023, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=106394. 4.0 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14956017&FileExtension=pdf&FileName=6120_Redacted-Rel-Rel.pdf - Photo (item 2, PDF, 1 page, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14802923&FileExtension=pdf&FileName=Photo%201_Redacted-Rel.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.