# NTSB SEA06CA001: Cessna 150D, N4175U, Greenwater, WA, October 2, 2005 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: October 1, 2005, 19:00 local (Oct 2, 2005, 02:00 UTC) - Place: Greenwater, WA - Coordinates: 47.020832, -121.525001 - Nearby events: https://openairdocs.org/map.md?lat=47.0208&lon=-121.5250&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report January 31, 2006 - Report: Approved by Office Director - Parties: FAA FSDO - NTSB case key (mKey): 62594 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA06CA001 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62594/pdf - Page: https://openairdocs.org/ntsb/SEA06CA001 ## Probable cause The pilot's inadvertently flying into IMC weather conditions, his failure to maintain sufficient airspeed for flight, and his subsequent inadvertent stall/mush into trees. Contributing factors were the fog and the trees. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight encounter with weather, takeoff - initial climb - weather condition - fog (contributing factor) - vfr flight into imc - inadvertent, pilot in command (cause) - Loss of control - in flight, descent - uncontrolled - airspeed - not maintained, pilot in command (cause) - stall/mush - inadvertent, pilot in command - In flight collision with object, descent - uncontrolled - object - tree(s) (contributing factor) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - mountainous/hilly ## Analysis The pilot said that soon after departure from runway 33, he inadvertently entered a fog "bank." He said that he attempted a climbing right turn to return to the clear air over the departure runway. He said that his airspeed dropped, and the aircraft stalled subsequently impacting trees and descended vertically to the mountain side. The airplane came to rest inverted bending and wrinkling both wings and the fuselage. ## Factual narrative On October 1, 2005, at approximately 1900 Pacific daylight time, a Cessna 150D, N4175U, was destroyed when it impacted terrain near Greenwater, Washington. The private pilot (non-instrument rated), the sole occupant in the aircraft, received minor injuries. The pilot/owner was operating the airplane under 14 CFR Part 91. Visual meteorological conditions prevailed for the personal cross-country flight that was originating at the time of the accident. The pilot said that his destination was Thun Field (1S0), Puyallup, Washington; he had not filed a flight plan. The pilot said that soon after departure from runway 33, he inadvertently entered a fog "bank." He said that he attempted a climbing right turn to return to the clear air over the departure runway. He said that his airspeed dropped, and the aircraft stalled subsequently impacting trees and descended vertically to the mountain side. The airplane came to rest inverted bending and wrinkling both wings and the fuselage. ## Aircraft - Registration: [N4175U](https://openairdocs.org/deregistered/N4175U-2008-04-09), registration cancelled 2008-04-09, S/N 15060175, built 1963 (OpenAirDocs) - Reported make and model: Cessna 150D - Registry model: [Cessna 150D](https://openairdocs.org/model/cessna-150d) (registry code 2071810) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 15060175 - Airframe hours: 10330 - Engines: Continental O-200 100 horsepower reciprocating - Damage: Destroyed - Flight: Personal, Part 91 - Registered owner: Thomas A. Werth - Airworthiness certificate: Standard, Utility; Standard, Normal - Last inspection: Annual, June 1, 2005 - Departed: 21W, Greenwater, WA - Destination: 1SO, Puyallup, WA - Airport: 21W, Ranger Creek Airport, runway 33, 2,875 × 30 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; injuries: minor; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review December 1, 2004; seat: left; flight hours: 1,850 total, 0 in this make and model, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Dusk - Wind: 0° at 4 knots - Visibility: 10 statute miles - Temperature: 39 °F, dew point 36 °F - Altimeter: 29.79 inHg - Observed at: SMP, 11 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 20051001023189A](https://openairdocs.org/incident/20051001023189A), Oct 1, 2005: Cessna 150D, Greenwater, WA, Destroyed. (-23) N4175U experienced a rough running engine after the aircraft departed Ranger Creek Airport (21W). The aircraft crashed into a heavily wooded area trying… 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.