# NTSB CEN21LA058: Temco GC-1B, N77759, Waukegan, IL, November 8, 2020 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: November 8, 2020, 14:18 local (20:18 UTC) - Place: Waukegan, IL - Coordinates: 42.42, -87.87 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.4200&lon=-87.8700&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: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Central Region - Parties: Federal Aviation Administration, Greater Chicago FSDO - NTSB case key (mKey): 102281 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN21LA058 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102281/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=102281 - Page: https://openairdocs.org/ntsb/CEN21LA058 ## Probable cause The pilot’s failure to maintain directional control during takeoff with a crosswind that resulted in a ground loop and impact with terrain. ## 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: [Temco GC-1B, 3 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=9230108), [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: [Temco GC-1B, 2 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=9230108), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Effect on operation (probable cause); cases with it: [Temco GC-1B, 2 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=9230108), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Other weather encounter](https://openairdocs.org/ntsb-events/400); cases with it: [Temco GC-1B, 2 cases](https://openairdocs.org/ntsb-events/400/sequence.md?model=9230108), [All aircraft, 1,127 cases](https://openairdocs.org/ntsb-events/400/sequence.md) - [Takeoff: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Temco GC-1B, 3 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=9230108), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Takeoff: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Temco GC-1B, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=9230108), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Takeoff: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Temco GC-1B, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=9230108), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Takeoff: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490); cases with it: [Temco GC-1B, 1 case](https://openairdocs.org/ntsb-events/490/sequence.md?model=9230108), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The private pilot reported that while taking off for a personal flight in a tailwheel airplane, the airplane encountered wind from the south during the takeoff roll and weathervaned. The airplane subsequently departed the left side of the runway and ground looped. During the ground loop, the right main landing gear collapsed, and the right wing struck the ground sustaining substantial damage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. At the time of the accident, the pilot was taking the airplane off on runway 23 with the wind from 130o at 8-10 knots. ## Aircraft - Registration: [N77759](https://openairdocs.org/aircraft/N77759), registered now, S/N 3531, built 1948 (OpenAirDocs) - Reported make and model: TEMCO GC-1B - Registry model: [Temco GC-1B](https://openairdocs.org/model/temco-gc-1b) (registry code 9230108) (OpenAirDocs) - Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 3531 - Year built: 1948 - Airframe hours: 1826.37 - Engines: Continental C-145-2H 145 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Standard, Normal - Last inspection: Annual, May 6, 2020 - Destination: Ann Arbor, MI - Airport: UGN, Waukegan National Airport, runway 23, 5,999 × 150 ft, concrete - Equipment: ADS-B, Electronic flight bag or handheld device ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 49; injuries: none; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, with waivers/limitations; last flight review September 19, 2020; seat: left; restraint: 3-point; flight hours: 247 total, 65 in this make and model, 163 as pilot in command, 10 in the last 90 days, 8 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 140° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 54 °F - Altimeter: 30.15 inHg - Observed at: UGN, -19 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 20201108017839A](https://openairdocs.org/incident/20201108017839A), Nov 8, 2020: Temco GC-1B, Waukegan, IL, Substantial damage. On November 08, 2020, N77759, a Temco swift GC-1B, was departing runway 23 at Waukegan National Airport (kugn) enroute to ann arbor, Michigan. During the take… ## Docket (2 files) The files NTSB released with the investigation on August 18, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=102281. 4.9 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 4.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11629314&FileExtension=pdf&FileName=6120%20Master_Redacted-Rel.pdf - Photo log (item 2, PDF, 1 page, 391 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11628936&FileExtension=pdf&FileName=Photo%20Log-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.