# NTSB FTW98LA218: Grumman-Schweizer G-164B, N6656K, Dumas, AR, May 16, 1998 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 16, 1998, 11:30 local (16:30 UTC) - Place: Dumas, AR - Coordinates: 33.880592, -91.479309 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.8806&lon=-91.4793&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report February 15, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 20604 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW98LA218 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20604/pdf - Page: https://openairdocs.org/ntsb/FTW98LA218 ## Probable cause The pilot's improper activation of the parking brake. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Nose over, landing - roll - brakes(normal) - improper use of, pilot in command (cause) ## Analysis The aircraft nosed over after the brakes locked during the landing roll. During the investigation, the FAA inspector and the operator of the aircraft found the parking brake in the 'ON' position. After the operator released the parking brake, the FAA inspector observed the wheels rotate freely. ## Factual narrative On May 16, 1998, at 1130 central daylight time, a Grumman-Schweizer G-164B agricultural airplane, N6656K, owned and operated by King Flying Service, Inc. of Dumas, Arkansas, nosed over to the inverted position while landing near Dumas, Arkansas. The commercial pilot, sole occupant of the airplane, was not injured and the airplane was substantially damaged. Visual meteorological conditions prevailed for the local aerial application flight and a flight plan was not filed. The Title 14 CFR Part 137 flight departed the operator's private airstrip at 1100. During a personal interview conducted by the FAA inspector, the pilot reported that the brakes locked during the landing roll. The operator and the FAA inspector examined the airplane and found structural damage to the vertical stabilizer, rudder, and wings. The FAA inspector found that, "during the initial inspection of the aircraft the main landing wheels were found to be locked and could not be rotated." Upon examining the cockpit, the operator found the parking brake in the "ON" position. The operator then released the parking brake and had the FAA inspector check the main wheel rotation. Upon checking the brakes, the FAA inspector found the wheels to "rotate freely with no resistance." The pilot had accumulated approximately 2,061 hours in the accident make and model of aircraft and 12,394 total flight hours. Winds at the time of the accident were reported by the pilot to be light and variable. ## Aircraft - Registration: [N6656K](https://openairdocs.org/deregistered/N6656K-2000-01-05), registration cancelled 2000-01-05, S/N 410B (OpenAirDocs) - Reported make and model: Grumman-Schweizer 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) - Category: Airplane - Serial number: 410B - Engines: P&W R-1340-AN1 600 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Kenny King - Airworthiness certificate: Special, Restricted (Special) - Departed: NONE - Airport: NONE, King ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 53; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 12,394 total, 2,061 in this make and model, 12,293 as pilot in command, 61 in the last 90 days, 51 in the last 30 days, 6 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 130° at 6 knots - Visibility: 6 statute miles - Lowest ceiling: none - Temperature: 90 °F, dew point 59 °F - Altimeter: 30.00 inHg - Observed at: GLH, 65 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 19980516009739A](https://openairdocs.org/incident/19980516009739A), May 16, 1998: Scwzer G164B, Dumas, AR, Substantial damage. Acft brakes locked on landing, acft flipped over, Dumas, AR. (.4)the aircraft nosed over after the brakes locked during the landing roll. During the… 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.