# NTSB ANC12CA070: Dehavilland DHC-2, N906JS, Cantwell, AK, July 8, 2012 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 7, 2012, 19:06 local (Jul 8, 2012, 03:06 UTC) - Place: Cantwell, AK - Coordinates: 63.231109, -149.374725 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=63.2311&lon=-149.3747&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Defining event: [Enroute-cruise: Miscellaneous/other](https://openairdocs.org/ntsb-events/900) - Highest injury: No injuries - Injuries: 8 uninjured - Status: Completed, report November 26, 2012 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - Parties: FAA Anchorage FSDO - NTSB case key (mKey): 84254 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC12CA070 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/84254/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=84254 - Page: https://openairdocs.org/ntsb/ANC12CA070 ## Probable cause The right seat passenger’s inadvertent contact with the emergency fuel shutoff valve, which resulted in fuel starvation and a total loss of engine power. Contributing to the accident was the pilot's failure to provide a thorough preflight briefing to the passenger seated in the cockpit. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Action](https://openairdocs.org/ntsb-findings/02041000): Personnel issues › Action/decision · Passenger (probable cause); cases with it: [Dehavilland DHC-2, 1 case](https://openairdocs.org/ntsb-findings/02041000/cases.md?model=2808001), [All aircraft, 111 cases](https://openairdocs.org/ntsb-findings/02041000/cases.md) - [Fuel system: fuel selector/shutoff valve](https://openairdocs.org/ntsb-findings/01022823): Aircraft › Aircraft systems · Unintentional use/operation (probable cause); cases with it: [Dehavilland DHC-2, 2 cases](https://openairdocs.org/ntsb-findings/01022823/cases.md?model=2808001), [All aircraft, 176 cases](https://openairdocs.org/ntsb-findings/01022823/cases.md) - [Communication (personnel)](https://openairdocs.org/ntsb-findings/02063500): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Dehavilland DHC-2, 1 case](https://openairdocs.org/ntsb-findings/02063500/cases.md?model=2808001), [All aircraft, 17 cases](https://openairdocs.org/ntsb-findings/02063500/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Enroute-cruise: Miscellaneous/other](https://openairdocs.org/ntsb-events/900) (defining event); cases with it: [Dehavilland DHC-2, 1 case](https://openairdocs.org/ntsb-events/900/sequence.md?model=2808001), [All aircraft, 1,556 cases](https://openairdocs.org/ntsb-events/900/sequence.md) - [Enroute-cruise: Engine shutdown](https://openairdocs.org/ntsb-events/140); cases with it: [Dehavilland DHC-2, 1 case](https://openairdocs.org/ntsb-events/140/sequence.md?model=2808001), [All aircraft, 80 cases](https://openairdocs.org/ntsb-events/140/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Dehavilland DHC-2, 2 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2808001), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot stated that during cruise flight, the engine suddenly lost all power. He attempted to restart the engine but was unable and elected to make a forced landing in a bog. During the landing, the left wing and right elevator stuck trees, sustaining substantial damage. After the forced landing, the pilot noticed that the emergency fuel shutoff lever on the right side of the center console had been moved toward the shutoff position. The passenger who was seated in the right seat of the cockpit stated that he was unaware of the fuel shutoff lever and was not briefed on specific areas to be aware of in the cockpit but that he had been adjusting himself in the seat just prior to the engine shutting down. ## Factual narrative The pilot stated that during normal cruise flight the engine suddenly lost all power. He attempted to restart the engine, but was unable, and elected to make a forced landing in a bog. During the landing, the left wing and right elevator stuck trees, and sustained substantial damage. After the forced landing, the pilot noticed that the emergency fuel shutoff lever on the right side of the center console had been moved toward the shutoff position. The passenger that was seated in the right seat of the cockpit stated that we was unaware of the fuel shutoff lever, and was not briefed on specific areas to be aware of in the cockpit, but that he had been adjusting himself in the seat just prior to the engine shutting down. ## Aircraft - Registration: [N906JS](https://openairdocs.org/aircraft/N906JS), registered now, S/N 1659 TB34, built 1966 (OpenAirDocs) - Reported make and model: DEHAVILLAND DHC-2 - Registry model: [Dehavilland DHC-2](https://openairdocs.org/model/dehavilland-dhc-2) (registry code 2808001) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane - Serial number: 1659 TB34 - Airframe hours: 7909 - Engines: Pratt & Whitney PT6A-20A 550 horsepower turbo prop - Damage: Substantial damage - Flight: Part 135 - Operator: Fly Denali, Inc - Registered owner: N906js LLC - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, June 26, 2012, 37 hours before - Departed: HRR, Healy, AK - Destination: HRR, Healy, AK - Flight plan: Company VFR ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 24; injuries: none; flight instructor, commercial; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review May 18, 2012; seat: left; flight hours: 1,457 total, 46 in this make and model, 1,234 as pilot in command, 159 in the last 90 days, 103 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 160° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: 5,000 ft overcast - Temperature: 55 °F, dew point 52 °F - Altimeter: 29.86 inHg - Observed at: PATK, 45 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 20120707013359A](https://openairdocs.org/incident/20120707013359A), Jul 7, 2012: Dehavilland DHC-2, Cantwell, AK, Substantial damage. While flying at 1000 to 1500 feet the aircraft engine suddenly flamed out. The pilot was unable to restart the aircraft and made an emergency landing. Aircraft… ## Other investigations on N906JS (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 ANC88LA123](https://openairdocs.org/ntsb/ANC88LA123), Sep 4, 1988: de Havilland DHC-2 (N906JS), Fairbanks, AK, substantial damage ## Docket (2 files) The files NTSB released with the investigation on October 5, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=84254. 1.3 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 1.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40378002&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Record of Conversation (item 2, .PDF, 55 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40378003&FileExtension=.PDF&FileName=Record%20of%20Conversation-Master.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.