# NTSB CEN10CA201: Grumman G-164B, N993QC, Forest City, MO, April 8, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: April 8, 2010, 17:30 local (22:30 UTC) - Place: Forest City, MO - Coordinates: 39.966388, -95.066665 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.9664&lon=-95.0667&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: 1 uninjured - Status: Completed, report August 12, 2010 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 75747 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN10CA201 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/75747/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=75747 - Page: https://openairdocs.org/ntsb/CEN10CA201 ## Probable cause The pilot's failure to maintain aircraft control during landing, which resulted in an encounter with wet/muddy terrain and a subsequent nose over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Grumman Acft ENG Cor-Schweizer G-164B, 4 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=3952802), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Grumman Acft ENG Cor-Schweizer G-164B, 11 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=3952802), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Terrain: wet/muddy terrain](https://openairdocs.org/ntsb-findings/03021035): Environmental issues › Physical environment · Effect on operation; cases with it: [Grumman Acft ENG Cor-Schweizer G-164B, 4 cases](https://openairdocs.org/ntsb-findings/03021035/cases.md?model=3952802), [All aircraft, 110 cases](https://openairdocs.org/ntsb-findings/03021035/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: Miscellaneous/other](https://openairdocs.org/ntsb-events/900); cases with it: [Grumman Acft ENG Cor-Schweizer G-164B, 6 cases](https://openairdocs.org/ntsb-events/900/sequence.md?model=3952802), [All aircraft, 1,556 cases](https://openairdocs.org/ntsb-events/900/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Grumman Acft ENG Cor-Schweizer G-164B, 6 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=3952802), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The pilot reported that during landing, after returning from a maintenance facility, he encountered a quartering tailwind that "made the airplane drift left of the center." He corrected with right rudder, then applied left rudder which produced a right skid. Subsequently, the main landing gear encountered a "muddy area of the [grass] strip." The airplane nosed over and came to rest inverted, resulting in substanial damage to the airplane. The pilot reported no anomalies with the airplane during the accident. ## Factual narrative The pilot reported that during landing, after returning from a maintenance facility, he encountered a quartering tailwind, which "made the airplane drift left of the center." He corrected with right rudder, then applied left rudder which produced a right skid. Subsequently, the main landing gear encountered a "muddy area of the [grass] strip." The airplane nosed over and came to rest inverted, resulting in substantial damage to the airplane. The pilot reported no anomalies with the airplane. ## Aircraft - Registration: [N993QC](https://openairdocs.org/deregistered/N993QC-2015-12-30), registration cancelled 2015-12-30, S/N 453B, built 1978 (OpenAirDocs) - Reported make and model: GRUMMAN G-164B - Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 453B - Airframe hours: 6310 - Engines: Garrett TPE-331-1012 665 horsepower turbo prop - Damage: Substantial damage - Flight: Positioning, Part 91 - Operator: Williams Fertilizer Services LLC - Registered owner: Williams Fertilizer Services LLC - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, October 23, 2009 - Departed: FNB, Falls City, NE - Destination: PVT, Forest City, MO - Airport: PVT, Private, runway 18, 2,250 × 75 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; injuries: none; commercial; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review February 14, 2009; seat: center; flight hours: 2,900 total, 250 in this make and model, 2,850 as pilot in command, 10 in the last 90 days, 10 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Lowest ceiling: none ## 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 20100408031529A](https://openairdocs.org/incident/20100408031529A), Apr 8, 2010: Grumman Acf G-164B, Forrest City, MO, Substantial damage. Pilot was re-positioning aircraft from maintenance facility in falls city, NE. He landed to the south on a private, sod strip. Approximately 20 yards after… ## Other investigations on N993QC (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 CEN14LA301](https://openairdocs.org/ntsb/CEN14LA301), Jun 18, 2014: Grumman Acft ENG Cor-Schweizer G-164B (N993QC), Lake City, AR, substantial damage. Probable cause: The partial loss of engine power for reasons that could not be determined based on the available evidence. ## Docket (2 files) The files NTSB released with the investigation on May 25, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=75747. 927 KB in all. - Pilot Statement (item 1, .PDF, 8 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40329681&FileExtension=.PDF&FileName=Pilot%20Statement-Redacted.PDF - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 2, .PDF, 920 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40330021&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.