# NTSB ANC21LA002: Cessna 185, N850WB, Anchorage, AK, October 20, 2020 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: October 20, 2020, 14:15 local (22:15 UTC) - Place: Anchorage, AK - Coordinates: 61.416089, -149.5083 - Nearby events: https://openairdocs.org/map.md?lat=61.4161&lon=-149.5083&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: Alaska Regional Office - NTSB case key (mKey): 102180 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC21LA002 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102180/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=102180 - Page: https://openairdocs.org/ntsb/ANC21LA002 ## Probable cause The pilot receiving instruction’s failure to maintain directional control during the landing roll, which resulted in a runway excursion onto soft terrain. Contributing to the accident was the flight instructor's inadequate supervision of the pilot while 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 · Student/instructed pilot (probable cause); cases with it: [Cessna 185E, 3 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2072816), [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: [Cessna 185E, 2 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2072816), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Attention/monitoring: monitoring other person](https://openairdocs.org/ntsb-findings/02021535): Personnel issues › Psychological · Instructor/check pilot (probable cause); cases with it: [Cessna 185E, 1 case](https://openairdocs.org/ntsb-findings/02021535/cases.md?model=2072816), [All aircraft, 200 cases](https://openairdocs.org/ntsb-findings/02021535/cases.md) - [Terrain](https://openairdocs.org/ntsb-findings/03021000): Environmental issues › Physical environment · Effect on operation (probable cause); cases with it: [Cessna 185E, 1 case](https://openairdocs.org/ntsb-findings/03021000/cases.md?model=2072816), [All aircraft, 267 cases](https://openairdocs.org/ntsb-findings/03021000/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: [Cessna 185E, 3 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2072816), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The pilot receiving instruction reported that he and the flight instructor were practicing takeoffs and landings in his airplane. On the second landing, during the landing roll, the airplane veered to the right and exited the runway onto soft terrain, and the airplane then spun abruptly to the right. The left wing and left elevator struck the ground, which resulted in substantial damage to the left wing, left aileron, left horizontal stabilizer, and left elevator. The pilot receiving instruction reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation and that the accident might have been prevented if he had reacted more quickly and prevented the airplane from departing the runway. ## Aircraft - Registration: [N850WB](https://openairdocs.org/aircraft/N850WB), registered now, S/N 185-1350, built 1968 (OpenAirDocs) - Reported make and model: CESSNA 185 (E) - Registry model: [Cessna 185E](https://openairdocs.org/model/cessna-185e) (registry code 2072816) (OpenAirDocs) - Registry engine: [Continental IO-520-D](https://openairdocs.org/engine/continental-io-520-d) (registry code 17236, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 185-1350 - Year built: 1968 - Airframe hours: 5600 - Engines: Continental IO-520D 300 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: John A Morris - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 1, 2020 - Departed: PALH, Anchorage, AK - Destination: PALH, Anchorage, AK - Airport: PABV, Birchwood Airport, runway 02L, 4,010 × 100 ft, asphalt - Equipment: Satellite tracking device, ADS-B, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 63; injuries: none; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review May 26, 2010; seat: left; restraint: 4-point; flight hours: 574 total, 574 as pilot in command - Flight instructor; age 69; injuries: none; flight instructor, commercial; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review October 13, 2020; seat: right; restraint: 4-point; flight hours: 2,400 total, 0 in this make and model, 2,000 as pilot in command, 1 in the last 90 days, 1 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 230° at 4 knots - Visibility: 10 statute miles - Temperature: 36 °F, dew point 28 °F - Altimeter: 30.42 inHg - Observed at: PABV - METAR: PABV 202156Z AUTO 23004KT 10SM CLR 02/M02 A3042 RMK AO2 SLP309 T00221017 FZRANO ## 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 20201020014589A](https://openairdocs.org/incident/20201020014589A), Oct 20, 2020: Cessna 185E, Chugiak, AK, Substantial damage. On October 20, 2020 at 1240PM a Cessna 185 N850WB departed runway gravel runway 32 lake hood, anchorage Alaska for the purposes of providing currency flight… ## Docket (1 files) The files NTSB released with the investigation on September 8, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=102180. 3.3 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 3.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12675989&FileExtension=pdf&FileName=6120%20DMS_Redacted-Rel%20(4)-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.