# NTSB WPR21LA255: Cessna 150, N1972L, Terreton, ID, June 30, 2021 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Class 4 · Limited · Final report - Date: June 30, 2021, 12:20 local (18:20 UTC) - Place: Terreton, ID - Coordinates: 43.850944, -112.50136 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.8509&lon=-112.5014&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-aborted after touchdown: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) - Highest injury: Serious injuries - Injuries: 2 serious - 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): 103392 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA255 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/103392/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=103392 - Page: https://openairdocs.org/ntsb/WPR21LA255 ## Probable cause The pilot's exceedance of the airplane's critical angle of attack during a go-around, which resulted in an aerodynamic stall and subsequent impact with terrain. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Temp/humidity/pressure: high density altitude](https://openairdocs.org/ntsb-findings/03031020): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Cessna 150L, 1 case](https://openairdocs.org/ntsb-findings/03031020/cases.md?model=2071826), [All aircraft, 278 cases](https://openairdocs.org/ntsb-findings/03031020/cases.md) - [Performance/control parameters: angle of attack](https://openairdocs.org/ntsb-findings/01062042): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna 150L, 4 cases](https://openairdocs.org/ntsb-findings/01062042/cases.md?model=2071826), [All aircraft, 990 cases](https://openairdocs.org/ntsb-findings/01062042/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna 150L, 26 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2071826), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [Cessna 150L, 15 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2071826), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-aborted after touchdown: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490) (defining event); cases with it: [Cessna 150L, 8 cases](https://openairdocs.org/ntsb-events/490/sequence.md?model=2071826), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md) ## Analysis The pilot reported that, he had just landed when he thought that he saw a crop duster airplane descending for a short base for landing on the opposite runway. The pilot initiated a go around with the flaps still extended and with a high-density altitude. The airplane attained an altitude of about 50 to 100 ft above ground level when the airplane stalled, and the left wing dropped. The pilot attempted to recover but did not have enough altitude before the airplane collided with the ground. The airplane nosed over and came to rest inverted. The wings and fuselage were substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N1972L](https://openairdocs.org/deregistered/N1972L-2023-09-02), registration cancelled 2023-09-02, S/N 15073272, built 1972 (OpenAirDocs) - Reported make and model: CESSNA 150 (L) - Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 15073272 - Year built: 1972 - Airframe hours: 7135.9 - Engines: Continental O-200-A 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Moss Ronald J - Airworthiness certificate: Standard, Utility - Last inspection: Annual, June 16, 2021, 2.5 hours before - Destination: Same as departure - Airport: 1U2, Mud Lake/West Jefferson County/, runway 02/20, 3,300 × 40 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 51; injuries: serious; flight instructor, airline transport, commercial, private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review June 19, 2021; seat: right; restraint: lap only; flight hours: 12,960 total, 500 in this make and model, 10,730 as pilot in command, 185 in the last 90 days, 46 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Lowest ceiling: none - Temperature: 90 °F, dew point 51 °F - Altimeter: 30.23 inHg - Observed at: KRXE, 30 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 20210630017269A](https://openairdocs.org/incident/20210630017269A), Jun 30, 2021: Cessna 150L, Mudd Lake, ID, Substantial damage. The pilot intended to land runway 02 at 1U2 airport. The pilot noticed a crop duster in the area of the airport and assumed it had departed to the north after… ## Docket (2 files) The files NTSB released with the investigation on September 22, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=103392. 1.8 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12715155&FileExtension=pdf&FileName=6120%20255_Redacted-Rel.pdf - Accident photo (item 2, PDF, 1 page, 295 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12459942&FileExtension=pdf&FileName=Accident%20Photo%20255-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.