# NTSB DFW05CA177: Grumman-Schweizer G-164C, N6626K, Gillett, AR, July 1, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 1, 2005, 16:30 local (21:30 UTC) - Place: Gillett, AR - Coordinates: 34.173053, -91.935554 - Nearby events: https://openairdocs.org/map.md?lat=34.1731&lon=-91.9356&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report October 27, 2005 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 61902 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW05CA177 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61902/pdf - Page: https://openairdocs.org/ntsb/DFW05CA177 ## Probable cause The loss of engine power resulting from a disconnected discharge pressure line at the fuel control unit. A contributing factor was the lack of suitable terrain for the forced landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, maneuvering - aerial application - fuel system,line fitting - disconnected (cause) - Forced landing, descent - emergency - In flight collision with object, emergency landing - object - tree(s) - In flight collision with terrain/water, emergency landing - terrain condition - none suitable (contributing factor) ## Analysis The 18,738-hour pilot reported that while applying an aerial application of fertilizer to a field, the engine lost power. The pilot initiated a forced landing to a nearby field. During the forced landing, the airplane impacted trees and came to rest upright. A post-impact fire comsumed most of the airframe. Examination of the sooted engine revealed that the discharge pressure line (P3) at the fuel control unit was disconnected. The threads at the "B" nut were also covered with soot. ## Factual narrative On July 1, 2005, at 1630 central daylight time, a tail-wheel equipped Grumman-Schweizer G-164C single-engine turbine powered agricultural airplane, N6626K, was destroyed during a forced landing following a loss of engine power while performing an aerial application near Gillett, Arkansas. The commercial pilot, sole occupant of the airplane, was not injured. The airplane was registered to and operated by Trites Flying Service, Inc., of Gillett, Arkansas. Visual metrological conditions prevailed and a flight plan was not filed for the 14 Code of Federal Regulations Part 137 aerial application flight. The local flight originated from the operator's private airstrip near Gillett, Arkansas, at 1615. The 18,738-hour pilot reported in the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) that during an aerial application of fertilizer to a field, the engine "lost partial power." The pilot initiated a forced landing to a nearby field. During the forced landing, the airplane impacted trees and came to rest upright. Subsequently, a postcrash fire consumed most of the airplane. Examination of the Allied Signal TPE331-6-252M engine was conducted on July 29, 2005, at the facilities of Air Salvage of Dallas, near Lancaster, Texas, by the NTSB investigator-in-charge (IIC). The examination revealed that the engine was covered with soot, and the "B" nut (tubing nut that is used to hold flared tubing to a threaded fitting) from the discharge pressure line (P3) at the fuel control unit was disconnected. The threads of the "B" nut were also covered with soot. ## Aircraft - Registration: [N6626K](https://openairdocs.org/deregistered/N6626K-2006-05-04), registration cancelled 2006-05-04, S/N 8C, built 1978 (OpenAirDocs) - Reported make and model: Grumman-Schweizer G-164C - Registry model: [Grumman Acft ENG Cor-Schweizer G-164C](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164c) (registry code 3952803) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 8C - Engines: Allied Signal TPE331-6-252M 715 horsepower turbo prop - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Trites Flying Service Inc. - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, April 1, 2005, 464 hours before - Departed: Gillett, AR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 50; injuries: none; commercial; airplane ratings: single-engine land; medical: class 2, with waivers/limitations; seat: center; flight hours: 18,738 total, 8,594 in this make and model ## Weather - Conditions: Visual (VMC), Day ## 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 20050701015349A](https://openairdocs.org/incident/20050701015349A), Jul 1, 2005: Scwzer G164C, Gillett, AR, Destroyed. (-23) 07/01/2005, 16:30 CT, N6626K was operating under visual meteorological conditions, while dispensing fertilizer, aircraft lost power in a turn and… 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.