# NTSB SEA07TA203: Cessna TU206G, N9374Z, New Meadows, ID, July 14, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Final report - Date: July 14, 2007, 09:15 local (15:15 UTC) - Place: New Meadows, ID - Coordinates: 45.122222, -116.669723 - Nearby events: https://openairdocs.org/map.md?lat=45.1222&lon=-116.6697&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report December 20, 2007 - Report: Approved by Office Director - Parties: FAA FSDO - NTSB case key (mKey): 66229 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA07TA203 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66229/pdf - Page: https://openairdocs.org/ntsb/SEA07TA203 ## Probable cause The loss of engine power due to the loss of engine oil pressure following the oil pump's drive shaft failure for an undetermined reason. Contributing factors were the lack of suitable terrain for a forced landing and the rough/uneven terrain. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, cruise - normal - lubricating system,oil pressure pump - failure,total (cause) - Forced landing, descent - emergency - On ground/water encounter with terrain/water, landing - roll - terrain condition - none suitable (contributing factor) - terrain condition - rough/uneven (contributing factor) ## Analysis During cruise flight the airplane's engine began losing oil pressure and RPM. The pilot performed a forced landing, but encountered rough/uneven terrain during the landing roll. The aircraft's nose gear collapsed bending the bulkhead keels, nose wheel bracket, and the right wing tip rib. During the engine examination; the oil pump drive gear shaft was discovered to be fractured through at the spline drive. The reason for its failure was not determined. ## Factual narrative On July 14, 2007, at approximately 0915 mountain daylight time, a Cessna TU206G, N9374Z, was substantially damaged during a forced landing on Horse Mountain, near New Meadows, Idaho. The commercial pilot and his passenger were not injured. The airplane was being operated under contract to the United States Department of Agriculture, Forest Service (USFS) by McCall Aviation of McCall, Idaho, as a public use flight. The purpose of the flight was to conduct airborne fire reconnaissance. Visual meteorological conditions prevailed. A company flight plan had been filed; the flight had originated from McCall, Idaho, at 0813. The pilot said that the airplane's engine began losing oil pressure and RPM. He performed a forced landing, but encountered rough/uneven terrain during the landing roll. The aircraft's nose gear collapsed bending the bulkhead keels, nose wheel bracket, and the right wing tip rib. On October 2, 2007, Teledyne Continental Motor's, Inc. and the United States Forest Service examined the engine; the oil pump drive gear shaft was discovered to be fractured through at the spline drive. The reason for its failure was not determined. ## Aircraft - Registration: [N9374Z](https://openairdocs.org/deregistered/N9374Z-2009-02-04), registration cancelled 2009-02-04, S/N U20606440, built 1982 (OpenAirDocs) - Reported make and model: Cessna TU206G - Registry model: [Cessna TU206G](https://openairdocs.org/model/cessna-tu206g) (registry code 2073357) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: U20606440 - Airframe hours: 4046 - Engines: Continental TSIO-520-M 300 horsepower reciprocating - Damage: Substantial damage - Flight: Public aircraft - federal, Part 91 - Operator: U.S. Forest Service, doing business as McCall Aviation - Registered owner: Wilderness Aircraft II LLC - Airworthiness certificate: Standard, Normal - Last inspection: AAIP, July 1, 2007 - Departed: MYL, McCall, ID - Destination: MYL - Flight plan: Company VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 29; injuries: none; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review October 1, 2006; seat: left; flight hours: 2,800 total, 1,300 in this make and model, 2,600 as pilot in command, 250 in the last 90 days, 100 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 104° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 52 °F - Altimeter: 30.14 inHg - Observed at: MYL, 25 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 20070714013809A](https://openairdocs.org/incident/20070714013809A), Jul 14, 2007: Cessna TU206G, Mccall, ID, Minor damage. (-23) Cessna 206, N9374Z, was on contact with the usfs conducting a reconnaissance mission when the pilot [privacy data omitted] noticed an audible change in… 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.