# NTSB DFW06CA150: Grumman G-164B, N8225K, Alex, OK, June 2, 2006 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Data collection · Final report - Date: June 2, 2006, 08:00 local (13:00 UTC) - Place: Alex, OK - Coordinates: 35.106388, -97.968055 - Nearby events: https://openairdocs.org/map.md?lat=35.1064&lon=-97.9681&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report October 3, 2006 - Report: Approved by Office Director - Parties: FSDO, Oklahoma City, OK - NTSB case key (mKey): 63825 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW06CA150 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/63825/pdf - Page: https://openairdocs.org/ntsb/DFW06CA150 ## Probable cause The pilot's failure to maintain clearance from the power transmission line(s). A contributing factor was the low altitude selected by the pilot. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with object, maneuvering - aerial application - object - wire,transmission (cause) - clearance - not maintained, pilot in command (cause) - low altitude flight/maneuver - selected, pilot in command (contributing factor) - Loss of control - in flight, descent - uncontrolled - In flight collision with terrain/water, descent - terrain condition - open field ## Analysis The single-engine agricultural airplane collided with a set of power transmission lines while performing an aerial application flight. The 15,000-hour pilot sustained serious injuries and the airplane was destroyed. During an interview with a Federal Aviation Administration inspector, the pilot stated that prior to the accident the airplane was operating "fine." However, the pilot added that he had "no recollection" of the accident. The FAA inspector reported that there were two sets of wires, a small local line and a set of tall, high-power transmission lines. The pilot also told the inspector that the normal practice for them was to fly over both lines before descending to perform the application run. The FAA inspector reported that he found a portion of the lower right wing resting near the location of the high power lines. The visibility at the time of the accident was reported at 10 statute miles, with no obstructions. ## Factual narrative The single-engine agricultural airplane collided with a set of power transmission lines while performing an aerial application flight. The 15,000-hour pilot sustained serious injuries and the airplane was destroyed. During an interview with a Federal Aviation Administration inspector, the pilot stated that prior to the accident the airplane was operating "fine." However, the pilot added that he had "no recollection" of the accident. The FAA inspector reported that there were two sets of wires, a small local line and a set of tall, high-power transmission lines. The pilot also told the inspector that the normal practice for them was to fly over both lines before descending to perform the application run. The FAA inspector reported that he found a portion of the lower right wing resting near the location of the high power lines. The visibility at the time of the accident was reported as 10 statute miles, with no obstructions. ## Aircraft - Registration: [N8225K](https://openairdocs.org/deregistered/N8225K-2006-08-07), registration cancelled 2006-08-07, S/N 619-B (OpenAirDocs) - Reported make and model: Grumman G-164B - Registry model: [Gulfstream-Schweizer A/C GULFSTREAM AM G-164B](https://openairdocs.org/model/gulfstream-schweizer-a-c-gulfstream-am-g-164b) (registry code 3979904) (OpenAirDocs) - Category: Airplane - Serial number: 619b - Airframe hours: 4415 - Engines: Pratt & Whitney R1340 600 horsepower reciprocating - Damage: Destroyed - Fire: On-Ground - Flight: Aerial application, Part 137 - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, January 1, 2006 - Departed: CHK, CHICKASHA, OK - Destination: OK ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; injuries: serious; commercial; airplane ratings: single-engine land; medical: class 2, with waivers/limitations; last flight review January 1, 2006; seat: single; flight hours: 15,000 total, 1,500 in this make and model, 14,000 as pilot in command, 210 in the last 90 days, 50 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Not reported - Wind: 360° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 70 °F - Observed at: chk ## 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 20060602010489A](https://openairdocs.org/incident/20060602010489A), Jun 2, 2006: Scwzer G164B, Alex, OK, Destroyed. (-23) The pilot was doing aerial spraying in a pasture which he had to pass over power lines then descend to apply chemical. One wing tip hit a power line then… 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.