NTSB CAROL · Event
Event SEA98LA007
Registry · N714
FAA Aircraft Registry record.
Make / Model
CESSNA A185F
Year of manufacture
1975 · 22 years old at event
Engine
CONT MOTOR IO 520 SERIES (285 hp)
Seats / Engines
6 seats · 1 engine
Last airworthiness date
19750404
ADS-B equipped
Yes — Mode-S A98AE8
Registrant of record
UNITED STATES DEPARTMENT OF INTERIOR
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
failure of the pilot to maintain sufficient altitude/clearance from terrain. Factors relating to the accident included: darkness, and hilly/mountainous terrain.
Factual narrative
On October 22, 1997, approximately 2135 Pacific daylight time, N714, a Cessna 185A, was destroyed when it collided with terrain near Damascus, Oregon. The airline transport pilot and his airline transport pilot passenger were fatally injured. The flight had initiated in Placerville, California, about 1700, after the airplane was acquired by the pilot from an aircraft sales company. There was fire after the impact, and no report of the ELT actuating. Instrument meteorological conditions prevailed in the vicinity at the time of the accident. Contact with the Troutdale, Oregon, air traffic control tower had been initiated prior to the accident by an aircraft believed to be N714, however when Troutdale returned the radio call to establish communications, there was no response from N714. The wreckage distribution was along a 045 degree course in a wooded area. Investigators found no evidence of preexisting mechanical failure at the accident scene. According to a representative of the sales company, the purchaser had contacted Oakland Flight Service Station for a weather briefing prior to departure. The purchaser had stated to the sales company representative that he planned on stopping for the night at Redmond, Oregon, and had not at that time expressed any plans to continue on to the Portland, Oregon area, or to his home in Kent, Washington. At 1821, the pilot of N714 contacted Oakland Flight Watch over Chico, California. Weather was provided for Medford, Oregon, Portland, and Seattle, Washington, along with an airmet for occasional moderate turbulence forecast below 12,000 feet. The pilot also requested Arcata, California, and Salem, Oregon, weather, which was also provided. McMinneville Automated Flight Service Station (AFFS), recorded communications with N714 at 1954 from the Grants Pass, Oregon, vicinity, when the pilot requested weather at Roseburg, Eugene, Salem, and Portland, Oregon. The FSS specialist advised that new weather would be issued in about three minutes. At 2005, McMinnville (MMV)reinitiated contact with N714, and volunteered the weather for those reporting stations. Roseburg: wind 240 at 3, visibility 7, 11,000 feet broken, temperature 11 (Celsius), dew point 8, altimeter 30.13. Eugene: visibility 9, a few clouds at 2,000 feet, 2,600 broken, 3700 overcast. Salem: visibility 6 with mist, a few clouds at 2,000 feet, 3,500 broken, 4300 overcast. Portland International: wind calm, visibility 5 with mist, 1,000 scattered, 2,000 broken, 6,500 overcast, temperature 11, dew point 11, altimeter 30.12. N714 requested Seattle weather at that time, which was provided. About an hour later, at 2057, N714 again made contact with MMV, indicating that the airplane was over Eugene. N714 requested information on fuel availability at Hillsboro, Oregon, at that time. MMV checked, and advised N714 that fuel was only available until 2100. N714 then requested weather at Hillsboro and Portland. MMV provided the requested weather: Hillsboro: winds calm visibility 2 with mist, ceiling 4900 broken, temperature 10, dew point 9, altimeter 30.12. Portland: winds calm, visibility 5 with mist, ceiling 800 broken, 2000 overcast, temperature 12, dew point 11 altimeter 30.12, with VFR flight not recommended to Portland. N714 then requested Seattle weather. MMV provided Seattle and Olympia, Washington, weather, noting that there were IFR conditions along the route. N714 then requested and received cloud tops in the Seattle area. MMV noted tops of 7,000 in the Tacoma, Washington, and breaks at 11,000 and 18,000 feet in the Portland area. At 2115, N714 again attempted contact with McMinnville, and requested weather at Troutdale. Troutdale was winds calm visibility 4 with 1,000 feet broken, 1,600 overcast, temperature 11, dew point 10, altimeter 30.11. There was no further contact recorded with MMV. Radar data of a target squawking 1200, shows an aircraft on a direct heading toward Troutdale with an altitude encoder readout in level flight at 1200 feet from 2131:08 to 2132:56, then a gradual descent to 800 feet until a final radar response at 2134:08, at 45 degrees 27' 11" North, 122 degrees 28' 12" west. The wreckage was at N45 27.216, W122 27.262. FAA inspectors, assisted by Cessna and Teledyne Continental accident investigators, inspected the wreckage. No evidence of pre-impact mechanical or structural failure was observed. One witness reported a loss of electrical power in his home about 2130, followed by the sound of an engine at "full open throttle," before an impact with the ground outside his house. Another witness observed that she and her husband were watching television when their power went out and she heard an engine noise increasing in intensity, followed by an impact. A third witness noted an increase in the intensity of the engine, prior to impact, after she, too, suffered a loss of electrical power. A review of the airplane's documents revealed that the airplane was modified with a Supplemental Type Certificate for use of a 300 horsepower Continental IO-520-D engine, and a Sportsman STOL wing leading edge STC modification. All previously installed navigation and communications equipment was removed and replaced with the following equipment on January 14, 1993: 1 King KX-170B Nav/comm 1 King KI-221C VOR indicator 1 King KT78A transponder 1 King KMA-20 Audio panel 1 Bendix T-12D ADF system, including Bendix 551A ADF indicator 1 ACK A-30 altitude encoder. On January 29, 1996, a Northstar Loran was installed in the airplane. This receiver was placarded as "Loran C not approved for IFR." Additionally, a Narco Comm 11 760 channel transceiver was listed on the equipment list provided by the aircraft sales entity. A pitot-static check and a transponder/encoder test were performed July 23, 1996. Autopsies on both occupants were performed by medical examiners at 301 NE Knott Street, Portland, Oregon. Toxicological testing of samples from the pilot by the FAA Aeromedical Branch were negative. No specific determination was made as to which pilot on board the airplane was manipulating the controls at the time of impact. The wreckage was moved to HLM Air Services at Independence, Oregon, where it was released on February 4, 1998. According to radar data, the airplane, which had been acquired earlier that day by the pilot, descended slowly from level flight at 1200 feet MSL to 800 feet MSL before disappearing from radar. Wreckage was located in the immediate vicinity of the last radar target. Witnesses reported a loss of electrical power in their homes, followed by the sound of an increase in engine power from the airplane immediately before final impact. The crash occurred in dark night conditions on rising terrain. The airplane's heading was direct toward an airport with an operating control tower; an attempt had been made to initiate radio contact. Weather at nearby reporting stations was marginal for VFR flight operations. The airplane's equipment list noted navigational equipment sufficient for a non-precision instrument approach. No pre-crash mechanical deficiencies were noted during the investigation. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1997_SEA98LA007.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2021 · Journal article (IJAAA)
Comparative Study on the Prediction of Aerodynamic Characteristics of Mini - Unmanned Aerial Vehicle with Turbulence Models
When dealing with CFD simulations the turbulent nature is seen on most of the engineering flows and these flows need to be solved.
- arXiv 2020 · arXiv preprint
Numerical Simulation of Iced Wing Using Separating Shear Layer Fixed Turbulence Models
Aerodynamic prediction of glaze ice accretion on airfoils and wing is studied using the Reynolds-averaged Navier-Stokes method.
- NASA NTRS 2019 · Conference Paper
Prediction of stall and post-stall behavior of airfoils at low and high Reynolds numbers
An interactive boundary-layer method, together with the e(super n)-approach to the calculation of transition, has been used to predict the stall and post-stall behavior of airfoils at low and high Rey…
- arXiv 2026 · arXiv preprint
Direct Numerical Simulations of Ice-Ocean Boundary Turbulence
Turbulent heat and freshwater transport at ice-ocean interfaces controls glacier and iceberg melt rates, yet the underlying physics remains poorly constrained.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
Political Turbulence and Aviation Safety: A Cross-National Analysis of Political Stability's Effects on Aviation Accidents
To what extent does political stability affect aviation safety? This research aims to link domestic political conditions and public safety through the consideration of aviation accident frequency.
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