# NTSB CHI99LA046: Grumman G-164B, N6676Q, Naponee, NE, December 3, 1998 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: December 3, 1998, 09:00 local (15:00 UTC) - Place: Naponee, NE - Coordinates: 40.070655, -99.1305 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.0707&lon=-99.1305&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report February 16, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 45388 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI99LA046 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/45388/pdf - Page: https://openairdocs.org/ntsb/CHI99LA046 ## Probable cause the pilot's failure to identify the wires prior to spraying the field and the low altitude at which the pilot was flying. A factor was the wires which the airplane contacted. ## 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 - unsafe/hazardous condition - not identified, pilot in command (cause) - object - wire,transmission (contributing factor) - altitude - low, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis The pilot made a swath run to the south. He made a turn back to the north and was flying another swath run at a slightly lower altitude when the airplane collided with two of three wires which crossed the field. The airplane decelerated, rolled 360 degrees, and impacted the terrain in an upright position. The being sprayed was at the bottom of a 'canyon'. The poles from which the wires were suspended were on hills on both sides of the canyon. This was the first time the pilot had sprayed this particular field and he was unaware of the wires. ## Factual narrative On December 3, 1998, at 0900 central standard time, a Grumman G- 164B, N6676Q, operated by a commercial pilot collided with power lines during an aerial application flight in Naponee, Nebraska. The pilot received minor injuries. The airplane was substantially damaged. The 14 CFR Part 137 flight was operating in visual meteorological conditions without a flight plan. The flight originated from a private grass airstrip in Naponee, Nebraska, approximately 20 minutes prior to the accident. The pilot stated that he made a swath run to the south over a field. He made his turn back to the north and was flying another swath run at a slightly lower altitude when the airplane collided with two of three wires which crossed the field. The pilot reported the airplane decelerated, rolled 360 degrees, and impacted the terrain in an upright position. The pilot reported the field being sprayed was at the bottom of a "canyon". The poles from which the wires were suspended were on hills on both sides of the canyon. This was the first time the pilot had sprayed this particular field and he was unaware of the wires. ## Aircraft - Registration: [N6676Q](https://openairdocs.org/aircraft/N6676Q), registered now, S/N 197B (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) - Category: Airplane - Serial number: 197B - Airframe hours: 4372 - Engines: P&W R-985 450 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Aerial Farming - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, November 10, 1997, 171 hours before - Departed: NAPONEE, NE ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 11,477 total, 9,000 in this make and model, 11,300 as pilot in command, 30 in the last 90 days, 20 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 5 statute miles - Lowest ceiling: none - Temperature: 50 °F ## 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 19981203032869A](https://openairdocs.org/incident/19981203032869A), Dec 3, 1998: Scwzer G164B, Naponee, NE, Substantial damage. Acft crashed under unknown circumstances during aerial applicaiton. (.19) on December 3, 1998, at 0930 central standard time, a Grumman G-164B, N6676Q,… ## Other investigations on N6676Q (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 CEN12LA497](https://openairdocs.org/ntsb/CEN12LA497), Jul 30, 2012: Grumman Acft ENG Cor-Schweizer G-164B (N6676Q), Big Springs, NE, substantial damage. Probable cause: The total loss of engine power as a result of the pilot inadvertently shutting the engine off. Contributing to the accident was the modification to the engine control layout. 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.