# NTSB SEA00LA155: Cessna 172N, N737CM, Gleneden Beach, OR, August 9, 2000 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: August 9, 2000, 14:45 local (21:45 UTC) - Place: Gleneden Beach, OR - Coordinates: 44.880271, -124.030143 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.8803&lon=-124.0301&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report May 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 49950 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA00LA155 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49950/pdf - Page: https://openairdocs.org/ntsb/SEA00LA155 ## Probable cause The pilot's failure to remove the control lock during his preflight inspection. Factors contributing to the accident were the pilot's failure to follow the BEFORE TAKEOFF checklist, trees beyond the upwind end of the runway, and the pilot's self-induced pressure. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water collision with object, takeoff - aborted - object - tree(s) (contributing factor) - checklist - not followed, pilot in command (contributing factor) - self-induced pressure, pilot in command (contributing factor) - terrain condition - downhill - removal of control/gust lock(s) - not performed, pilot in command (cause) ## Analysis Following the arrival at the Siletz Bay State airport, the pilot secured the Cessna 172N controls with the aircraft gust lock. The following day he and his family returned to the airport to depart. Marginal VFR conditions existed and the pilot waited two hours during which conditions improved only slightly. The pilot stated, '...by now we are tired of waiting and want to go home...' and he decided to make a brief flight to evaluate the weather conditions. He continued, stating '...With my mind focusing on weather conditions I depart[ed] without doing a complete preflight. The gust lock remain[ed] in....' During the takeoff roll he was unable to rotate the aircraft's nose. Realizing the aircraft would not be able to clear obstacles in its climb path, he aborted the takeoff and rolled beyond the downsloping upwind end of the runway impacting trees and brush. The third item in the 'BEFORE TAKEOFF' checklist for the Cessna 172N states: 'Flight Controls - FREE and CORRECT.' ## Factual narrative On August 9, 2000, approximately 1445 Pacific daylight time, a Cessna 172N, N737CM, registered to Pacific Flyers, Inc., and being flown by a private pilot, was substantially damaged when it rolled off the upwind end of runway 35 and collided with trees following an aborted takeoff at the Siletz Bay State airport, Gleneden Beach, Oregon. The pilot sustained minor injuries. No flight plan had been filed and visual meteorological conditions prevailed. The flight, which was personal was operated under 14CFR91, and was to have been a brief local evaluation of weather conditions before departing for Salem, Oregon. The pilot was interviewed telephonically and subsequently provided a corroborating written statement (NTSB Form 6120.1/2 attached). He reported that he and his family had arrived at the airport in N737CM on the day previous to the accident (08/08/00). The pilot secured the aircraft following arrival with the installation of a gust lock which he described as "...a simple device that fits through the yoke colum[n] and shaft disabling the use of [the] flight controls." The pilot stated that the day of departure he and his family arrived at the airport intending to depart "...but conditions are marginal for VFR flight. We wait 2 hours for conditions to improve. For[e]cast is for 1500 feet broken. Conditions improve only slightly. Weather provides [a] high degree of agitation. By now we are tired of waiting and want to go home. I determine I will go up solo and estimate weather conditions to see if practical to get out." The pilot further stated, "With my mind focusing on weather conditions I depart without doing a complete preflight. The gust lock remains in. At my normal rotation point I cannot pull the aircraft off the ground. I fully expect the aircraft to fly and keep trying to lift off. At about 500 feet or so I realize even if I do get off the ground I would not clear obstacles. Throttle is pulled back, brakes are applied but to[o] little to[o] late. Aircraft is propelled past [the] end point of [the] runway down [a] steep embankment and seriously damaged." The "BEFORE TAKEOFF" checklist for the Cessna 172N states: 3. Flight Controls - FREE and CORRECT. (Refer to ATTACHMENT POH-I) The approach end of runway 17 (north of the upwind end of runway 35 where the aircraft came to rest) slopes down to the north and is populated with small trees and brush. ## Aircraft - Registration: [N737CM](https://openairdocs.org/deregistered/N737CM-2013-02-21), registration cancelled 2013-02-21, S/N 17269314, built 1977 (OpenAirDocs) - Reported make and model: Cessna 172N - Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17269314 - Engines: Lycoming O-320-H2AD 160 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Peters, Mark E. - Registered owner: Pacific Flyers, Inc. - Airworthiness certificate: Standard, Normal - Departed: S45 - Airport: S45, Siletzbay State Airport, runway 35, 3,000 × 60 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 36; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 360 total, 53 in this make and model, 320 as pilot in command, 6 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 150° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: 1,200 ft broken - Temperature: 59 °F, dew point 55 °F - Altimeter: 30.00 inHg - Observed at: ONP, 18 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 20000809011739A](https://openairdocs.org/incident/20000809011739A), Aug 9, 2000: Cessna 172N, Glenedon, OR, No damage. (-23) A/c received pre-flight and control gust lock was not removed prior to flight. Operator stated that gust lock was not normally installed so it was… ## Other investigations on N737CM (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 LAX79DUJ50](https://openairdocs.org/ntsb/LAX79DUJ50), Feb 10, 1979: Cessna 172N (N737CM), Sedona, AZ, substantial damage 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.