# NTSB SEA08CA093: Grumman G-164A, N48629, Dayton, WA, March 25, 2008 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: March 25, 2008, 09:21 local (16:21 UTC) - Place: Dayton, WA - Coordinates: 46.279724, -118.125556 - Nearby events: https://openairdocs.org/map.md?lat=46.2797&lon=-118.1256&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report April 30, 2008 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 67716 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA08CA093 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67716/pdf - Page: https://openairdocs.org/ntsb/SEA08CA093 ## Probable cause The pilot's inadequate compensation for the wind conditions and failure to maintain an adequate airspeed. A contributing factor was the sudden windshift. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Wind: sudden wind shift](https://openairdocs.org/ntsb-findings/03034010): Environmental issues › Conditions/weather/phenomena · Not specified (probable cause); cases with it: [Grumman Acft ENG Cor-Schweizer G-164A, 1 case](https://openairdocs.org/ntsb-findings/03034010/cases.md?model=3952801), [All aircraft, 114 cases](https://openairdocs.org/ntsb-findings/03034010/cases.md) - [Wind: tailwind](https://openairdocs.org/ntsb-findings/03034015): Environmental issues › Conditions/weather/phenomena · Not specified; cases with it: [Grumman Acft ENG Cor-Schweizer G-164A, 5 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md?model=3952801), [All aircraft, 594 cases](https://openairdocs.org/ntsb-findings/03034015/cases.md) - [Performance/control parameters: crosswind correction](https://openairdocs.org/ntsb-findings/01062030): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Grumman Acft ENG Cor-Schweizer G-164A, 2 cases](https://openairdocs.org/ntsb-findings/01062030/cases.md?model=3952801), [All aircraft, 184 cases](https://openairdocs.org/ntsb-findings/01062030/cases.md) - [Performance/control parameters: airspeed](https://openairdocs.org/ntsb-findings/01062010): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Grumman Acft ENG Cor-Schweizer G-164A, 3 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md?model=3952801), [All aircraft, 1,681 cases](https://openairdocs.org/ntsb-findings/01062010/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Grumman Acft ENG Cor-Schweizer G-164A, 5 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=3952801), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Uncontrolled descent: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Grumman Acft ENG Cor-Schweizer G-164A, 20 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=3952801), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot was returning to the operations base after an aerial fertilizer application. He was landing to the north, and noted that the wind was coming from the west. As he flared the airplane to land, the wind shifted to a strong, quartering tailwind. The airplane touched down on the runway, bounced, and then nosed over. During the accident sequence, the right wing sustained damage and the vertical stabilizer was crushed. The pilot did not report any mechanical problems. ## Factual narrative The pilot was returning to the operations base after an aerial fertilizer application. He was landing to the north, and noted that the wind was coming from the west. As he flared the airplane to land, the wind shifted to a strong, quartering tailwind. The airplane touched down on the runway, bounced, and then nosed over. During the accident sequence, the right wing sustained damage and the vertical stabilizer was crushed. The pilot did not report any mechanical problems. ## Aircraft - Registration: [N48629](https://openairdocs.org/deregistered/N48629-2017-06-20), registration cancelled 2017-06-20, S/N 1683, built 1976 (OpenAirDocs) - Reported make and model: Grumman G-164A - Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs) - Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1683 - Engines: Pratt & Whitney R-985 reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Operator: Cropland Air Service, Inc. - Registered owner: Cropland Air Service, Inc - Airworthiness certificate: Special, Restricted (Special) - Departed: Dayton, WA - Destination: Dayton, WA - Airport: NONE, Private Road, runway 36, 4,000 × 50 ft, dirt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 43; commercial; airplane ratings: single-engine land; medical: class 2; flight hours: 8,700 total, 250 in this make and model ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: 12,000 ft broken - Temperature: 45 °F - Altimeter: 30.12 inHg ## 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 20080325014479A](https://openairdocs.org/incident/20080325014479A), Mar 25, 2008: Scwzer G164A, Waitsburg, WA, Substantial damage. (-23) Pilot had completed dropping of dry fertilizer and was making a downwind approach to a private cropduster airfield. The pilot had over 200 hours of… 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.