# NTSB SEA95LA188: Grumman G-164B, N6774Q, Ephrata, WA, July 28, 1995 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 28, 1995, 16:20 local (23:20 UTC) - Place: Ephrata, WA - Coordinates: 47.270759, -119.590736 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=47.2708&lon=-119.5907&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 27, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 42227 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA95LA188 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42227/pdf - Page: https://openairdocs.org/ntsb/SEA95LA188 ## Probable cause THE PILOT'S INADEQUATE COMPENSATION FOR WIND CONDITIONS. FACTORS CONTRIBUTING TO THE ACCIDENT WERE CROSSWINDS AND GUSTS. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - weather condition - crosswind (contributing factor) - weather condition - gusts (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - Nose over, landing - roll ## Analysis THE PILOT ATTEMPTED A LANDING AT THE AGRICULTURAL AIRSTRIP. HE STATED THAT DURING THE LANDING, THE PREVAILING WEATHER CONDITIONS PRODUCED GUSTING CROSSWINDS. AS THE AIRPLANE TOUCHED DOWN AND BEGAN TO ROLLOUT, A GUST OF WIND CAUGHT THE AIRPLANE'S RIGHT WING. THE PILOT WAS UNABLE TO KEEP THE AIRPLANE ON THE AIRSTRIP. THE AIRPLANE CONTINUED OFF THE AIRSTRIP, NOSED OVER, AND WAS SUBSTANTIALLY DAMAGED. NO PREIMPACT MECHANICAL MALFUNCTIONS WERE REPORTED. ## Factual narrative On July 28, 1995, about 1620 Pacific daylight time, N6774Q, a Grumman G-164B airplane, operated by The Crop Duster, Inc., Ephrata, Washington, nosed over during landing in Ephrata and was substantially damaged. The commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed and no flight plan had been filed. The aerial application flight was conducted under 14 CFR 137. According to the pilot, the airplane was "pulled" to the north side of the runway by gusting crosswinds as the pilot attempted to land on a dirt strip after an aerial application flight. The airplane departed the runway and the nose gear dug into soft sand. The airplane nosed over. The top wing and vertical stabilizer were bent. No preimpact mechanical deficiencies were reported. ## Aircraft - Registration: [N6774Q](https://openairdocs.org/aircraft/N6774Q), registered now, S/N 284B (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: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs) - Category: Airplane - Serial number: 2848 - Engines: P&W R-1340 600 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Shaw, Martin - Airworthiness certificate: Special, Restricted (Special) ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 25; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 1,309 total, 114 in this make and model, 267 in the last 90 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 12 knots, gusting 18 - Visibility: 50 statute miles - Lowest ceiling: none - Temperature: 81 °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 19950728046879A](https://openairdocs.org/incident/19950728046879A), Jul 28, 1995: Scwzer G164B, Ephrata, WA, Substantial damage. Drifted off ag strip landing in crosswind. Nose dug into soft sand. Aircraft nosed over. Bent wing and stabilizer. ## Other investigations on N6774Q (3) 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 WPR10LA139](https://openairdocs.org/ntsb/WPR10LA139), Feb 18, 2010: Grumman Acft ENG Cor-Schweizer G-164B (N6774Q), Colfax, WA, substantial damage. Probable cause: A partial loss of engine power due to carburetor ice as a result of the pilot's failure to use carburetor heat. - [NTSB SEA01LA149](https://openairdocs.org/ntsb/SEA01LA149), Aug 11, 2001: Grumman G-164B (N6774Q), Quincy, WA, substantial damage. Probable cause: The failure of the impeller assembly as a consequence of impeller rub and binding within the impeller collector case for undetermined reasons. - [NTSB LAX90DVA10](https://openairdocs.org/ntsb/LAX90DVA10), Aug 19, 1990: Grumman-Schweizer G-164B (N6774Q), Westley, CA, destroyed. Probable cause: THE PILOT'S FAILURE MAINTAIN OBSTACLE CLEARANCE. 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.