# NTSB ERA25LA342: Schweizer G-164B, N8483K, Dover, DE, September 9, 2025 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Class 4 · Limited · Final report - Date: September 9, 2025, 15:35 local (19:35 UTC) - Place: Dover, DE - Coordinates: 39.208256, -75.482219 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.2083&lon=-75.4822&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Defining event: [Initial climb: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report December 4, 2025 - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Eastern Region Aviation - Parties: FAA/FSDO - NTSB case key (mKey): 200980 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA25LA342 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200980/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=200980 - Page: https://openairdocs.org/ntsb/ERA25LA342 ## Probable cause The pilot’s exceedance of the critical angle of attack which resulted in an aerodynamic stall at an altitude too low to recover. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [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: [Schweizer G-164B, 2 cases](https://openairdocs.org/ntsb-findings/01062042/cases.md?model=8059055), [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: [Schweizer G-164B, 7 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=8059055), [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. - [Initial climb: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) (defining event); cases with it: [Schweizer G-164B, 2 cases](https://openairdocs.org/ntsb-events/241/sequence.md?model=8059055), [All aircraft, 1,529 cases](https://openairdocs.org/ntsb-events/241/sequence.md) - [Initial climb: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Schweizer G-164B, 13 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=8059055), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that the airplane became airborne prior to reaching the intended airspeed. He continued the takeoff and during initial climb, the pilot increased the pitch of the airplane in an attempt to clear a set of power lines. This resulted in an exceedance of the critical angle of attack and subsequent aerodynamic stall. The airplane impacted a set of trees and the ground resulting in substantial damage to both wings and the fuselage. The operator reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N8483K](https://openairdocs.org/aircraft/N8483K), registered now, S/N 708B (OpenAirDocs) - Reported make and model: SCHWEIZER AIRCRAFT CORP G-164B - Registry model: [Schweizer G-164B](https://openairdocs.org/model/schweizer-g-164b) (registry code 8059055) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 708B - Year built: 1983 - Airframe hours: 22040.4 - Engines: Honeywell TPE331-6 715 horsepower turbo prop - Damage: Substantial damage - Flight: Aerial application, Part 137 - Operator: Air Enterprises LLC - Registered owner: Air Enterprises LLC - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, July 1, 2025, 147 hours before - Airport: 0N4, Chandelle, runway 04, 2,533 × 28 ft, asphalt - Equipment: Electronic flight bag or handheld device, Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 34; injuries: minor; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review April 25, 2025; seat: single; restraint: 4-point; flight hours: 2,888.9 total, 2,232.3 in this make and model, 2,825.7 as pilot in command, 325.9 in the last 90 days, 84.6 in the last 30 days, 6.2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 60° at 9 knots - Visibility: 10 statute miles - Lowest ceiling: 4,200 ft broken - Temperature: 73 °F, dew point 57 °F - Altimeter: 30.22 inHg - Turbulence: Light - Observed at: DOV, 5 nm away - METAR: KDOV 091855Z AUTO 06009KT 10SM BKN042 23/14 A3022 RMK AO2 SLP237 T02260139 ## 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 20250909014349A](https://openairdocs.org/incident/20250909014349A), Sep 9, 2025: Schweizer Aircraft Corp G-164B, Dover, DE, Destroyed. The pilot was departing on an agricultural dispensing flight. Video of the departure along with the pilot's statement show the aircraft took off in a 3 point… ## Other investigations on N8483K (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 CHI90DEE07](https://openairdocs.org/ntsb/CHI90DEE07), Jun 26, 1990: Schweizer G-164B (N8483K), Deer Grove, IL, substantial damage. Probable cause: THE PILOT'S INADEQUATE VISUAL LOOKOUT, RESULTING IN COLLISION WITH A POWER LINE. ## Docket (5 files) The files NTSB released with the investigation on December 4, 2025, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=200980. 3.0 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 10 pages, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19333247&FileExtension=pdf&FileName=6120.1%20Pilot_Operator%20Aircraft%20Accident_Incident%20Report_Redacted-Rel.pdf - Memorandum for record a�� pilot flight time (item 2, PDF, 2 pages, 635 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19359646&FileExtension=pdf&FileName=MOR%20Pilot%20Flight%20Time_Redacted-Rel.pdf - Memorandum for record a�� pilot statement (item 3, PDF, 1 page, 93 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19333185&FileExtension=pdf&FileName=MOR%20Pilot%20Statement-Rel.pdf - Witness statements (item 4, PDF, 2 pages, 67 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19333350&FileExtension=pdf&FileName=MOR%20Witness%20Statement-Rel.pdf - Investigation photographs (item 5, PDF, 3 pages, 351 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19333195&FileExtension=pdf&FileName=Photo%20Array%20ERA25LA342-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.