# NTSB ANC09LA058: Cessna 207, N1623U, Crooked Creek, AK, June 17, 2009 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: June 16, 2009, 16:20 local (Jun 17, 2009, 00:20 UTC) - Place: Crooked Creek, AK - Coordinates: 61.867221, -158.13417 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=61.8672&lon=-158.1342&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Defining event: [Maneuvering: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) - Highest injury: Minor injuries - Injuries: 1 minor, 2 uninjured - Status: Completed, report May 11, 2010 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: Federal Aviation Administration (Airworthiness) - NTSB case key (mKey): 74070 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC09LA058 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/74070/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=74070 - Page: https://openairdocs.org/ntsb/ANC09LA058 ## Probable cause A total loss of engine power for an undetermined reason. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Cessna 207, 2 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=2073602), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) - [Terrain: rough terrain](https://openairdocs.org/ntsb-findings/03021015): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Cessna 207, 2 cases](https://openairdocs.org/ntsb-findings/03021015/cases.md?model=2073602), [All aircraft, 442 cases](https://openairdocs.org/ntsb-findings/03021015/cases.md) - [Power plant](https://openairdocs.org/ntsb-findings/01057100): Aircraft › Aircraft power plant · Inoperative (probable cause); cases with it: [Cessna 207, 1 case](https://openairdocs.org/ntsb-findings/01057100/cases.md?model=2073602), [All aircraft, 198 cases](https://openairdocs.org/ntsb-findings/01057100/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Maneuvering: Loss of engine power (total)](https://openairdocs.org/ntsb-events/341) (defining event); cases with it: [Cessna 207, 3 cases](https://openairdocs.org/ntsb-events/341/sequence.md?model=2073602), [All aircraft, 3,820 cases](https://openairdocs.org/ntsb-events/341/sequence.md) - [Landing: Off-field or emergency landing](https://openairdocs.org/ntsb-events/440); cases with it: [Cessna 207, 3 cases](https://openairdocs.org/ntsb-events/440/sequence.md?model=2073602), [All aircraft, 3,365 cases](https://openairdocs.org/ntsb-events/440/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna 207, 9 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2073602), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The commercial pilot was on a Title 14, CFR Part 91, other work use flight when the accident occurred. As he approached his destination airport, he said he saw a large rain squall moving over the airport, and he elected to remain south of the airport to allow time for it to move. He reported that while maneuvering the airplane at 1,000 feet msl, all engine power was lost. Unable to restore engine power, the pilot selected a marshy tree-covered area as a forced landing site. The airplane sustained substantial damage to the fuselage during the forced landing. The NTSB discovered no mechanical problems with the engine during a postaccident teardown and examination. ## Factual narrative On June 16, 2009, about 1620 Alaska daylight time, a Cessna 207 airplane, N1623U, sustained substantial damage during a forced landing about 2 miles south of the Crooked Creek Airport, Crooked Creek, Alaska. The airplane was being operated by Bush-Tell, Inc., Aniak, Alaska, as a visual flight rules (VFR) other work use flight under Title 14, CFR Part 91, when the accident occurred. Of the three people aboard, the commercial pilot and one passenger were not injured, and one passenger sustained minor injuries. The flight originated at the Sleetmute Airport, Sleetmute, Alaska, about 1530, and company flight following procedures were in effect. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on June 17, the pilot noted that the purpose of the flight was to transport a crew of telecommunications technicians from Aniak to Sleetmute, then continue on to Crooked Creek before returning to Aniak later that evening. He said that the flight between Aniak and Sleetmute was uneventful, but noted that he had some difficulty starting the airplane’s engine before departing Sleetmute. He said that once the engine started, it operated without difficulty, and he departed for Crooked Creek. As the flight approached the Crooked Creek Airport, the pilot said he saw a large rain squall moving over the airport, and he elected to remain south of the airport to allow time for the rain squall to move away from the airport. He reported that while maneuvering the airplane at 1,000 feet msl, all engine power was lost. After completing the emergency procedures for a loss of engine power, the pilot said he was unable to restart the engine, and he selected a marshy tree-covered site as a forced landing area. During the forced landing, the airplane collided with trees, and sustained substantial damage to the fuselage and wings. The airplane was equipped with a Teledyne Continental Motors (TCM) IO-520 series engine. On July 27, 2009, at the direction and under the supervision of the NTSB IIC, an engine teardown and inspection was accomplished at B.J. Custom Aircraft Engines, Inc., Palmer, Alaska. The engine inspection revealed no preaccident mechanical anomalies. ## Aircraft - Registration: [N1623U](https://openairdocs.org/deregistered/N1623U-2012-07-19), registration cancelled 2012-07-19, S/N 20700223, built 1973 (OpenAirDocs) - Reported make and model: CESSNA 207 - Registry model: [Cessna 207](https://openairdocs.org/model/cessna-207) (registry code 2073602) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 20700223 - Airframe hours: 9089 - Engines: CONT MOTOR IO 520 SERIES 300 horsepower reciprocating - Damage: Substantial damage - Flight: Other work use, Part 91 - Operator: Bush-Tell Inc - Registered owner: Bush-Tell Inc - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 13, 2008, 105 hours before - Departed: SLQ, Sleetmute, AK - Destination: CJX, Crooked Creek, AK - Flight plan: Company VFR - Airport: CJX, Crooked Creek Airport ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 56; injuries: none; commercial, flight instructor; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 3, without waivers/limitations; seat: left; flight hours: 1,388 total, 486 in this make and model, 81 in the last 90 days, 47 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 64 °F - Altimeter: 29.65 inHg ## 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 20090616047359A](https://openairdocs.org/incident/20090616047359A), Jun 16, 2009: Cessna 207, Crooked Creek, AK, Substantial damage. [privacy data omitted] Departed aniak, AK on the morning of June 16,2009 with two passengers and flew to sleetmute,AK. They departed sleetmute around 3:30… ## Other investigations on N1623U (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 ANC80DA105](https://openairdocs.org/ntsb/ANC80DA105), Sep 29, 1980: Cessna 207 (N1623U), Levelock, AK, substantial damage ## Docket (1 files) The files NTSB released with the investigation on March 29, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=74070. 811 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 811 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40327628&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF 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.