# NTSB GAA16CA445: Cessna T207, N91025, Nanwalek, AK, August 23, 2016 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 23, 2016, 09:46 local (17:46 UTC) - Place: Nanwalek, AK - Coordinates: 59.211387, -151.554992 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=59.2114&lon=-151.5550&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Abnormal runway contact](https://openairdocs.org/ntsb-events/090) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report January 18, 2017 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - NTSB case key (mKey): 93879 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA16CA445 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/93879/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=93879 - Page: https://openairdocs.org/ntsb/GAA16CA445 ## Probable cause The pilot’s unstabilized approach and a subsequent runway overrun while landing on a short runway in variable wind conditions. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Cessna T207, 2 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2073612), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Aircraft capability: landing distance](https://openairdocs.org/ntsb-findings/01061030): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cessna T207, 1 case](https://openairdocs.org/ntsb-findings/01061030/cases.md?model=2073612), [All aircraft, 68 cases](https://openairdocs.org/ntsb-findings/01061030/cases.md) - [Wind: variable wind](https://openairdocs.org/ntsb-findings/03034025): Environmental issues › Conditions/weather/phenomena · Effect on equipment (probable cause); cases with it: [Cessna T207, 1 case](https://openairdocs.org/ntsb-findings/03034025/cases.md?model=2073612), [All aircraft, 113 cases](https://openairdocs.org/ntsb-findings/03034025/cases.md) - [Object/animal/substance: pole](https://openairdocs.org/ntsb-findings/03022010): Environmental issues › Physical environment · Contributed to outcome; cases with it: [Cessna T207, 1 case](https://openairdocs.org/ntsb-findings/03022010/cases.md?model=2073612), [All aircraft, 142 cases](https://openairdocs.org/ntsb-findings/03022010/cases.md) - [Runway/land/takeoff/taxi surface: wet surface](https://openairdocs.org/ntsb-findings/03023010): Environmental issues › Physical environment · Effect on operation; cases with it: [Cessna T207, 3 cases](https://openairdocs.org/ntsb-findings/03023010/cases.md?model=2073612), [All aircraft, 141 cases](https://openairdocs.org/ntsb-findings/03023010/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Other weather encounter](https://openairdocs.org/ntsb-events/400); cases with it: [Cessna T207, 2 cases](https://openairdocs.org/ntsb-events/400/sequence.md?model=2073612), [All aircraft, 1,127 cases](https://openairdocs.org/ntsb-events/400/sequence.md) - [Landing-landing roll: Abnormal runway contact](https://openairdocs.org/ntsb-events/090) (defining event); cases with it: [Cessna T207, 2 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=2073612), [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Landing-landing roll: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cessna T207, 3 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=2073612), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot reported that during landing the wind sock at the airport indicated that the wind was variable, about 5 knots, and predominately favored runway 1. According to the FAA airport facility directory, runway 01/19 was 1,850 feet long, and soft gravel. However, 1,000 feet of northern portion of the runway was closed indefinitely. The pilot recalled that about 500 feet down the 1,850 foot runway, and just before touchdown the airplane encountered, "a pretty rapid shift in the winds in both direction and velocity." He reported that the airplane touched down momentarily, and then went airborne again. After the second touchdown, the speed did not decline as expected, and although the airplane did start to slow as it got a better grip on the gravel (which was wet from rain that had occurred earlier), he ran out of runway. He reported that the airplane overran the runway at a groundspeed of about 10 knots, went down a small embankment, had a propeller strike and the airplane sustained substantial damage when the left wing struck a post. The pilot reported that there were no mechanical malfunctions or anomalies during the flight that would have prevented normal flight operations. The pilot reported that he considered going around, but due to the wind and terrain rejected the idea. ## Factual narrative The pilot reported that during landing the wind sock at the airport indicated that the wind was variable, about 5 knots, and predominately favored runway 1. According to the FAA airport facility directory, runway 01/19 was 1,850 feet long, and soft gravel. However, 1,000 feet of northern portion of the runway was closed indefinitely. The pilot recalled that about 500 feet down the 1850 foot runway, and just before touchdown the airplane encountered, "a pretty rapid shift in the winds in both direction and velocity." He reported that the airplane touched down momentary, and then went airborne again. After the second touchdown, the speed did not decline as expected, and although the airplane did start to slow as it got a better grip on the gravel (which was wet from rain that had occurred earlier), he ran out of runway. He reported that the airplane overran the runway at a groundspeed of about 10 knots, went down a small embankment, had a propeller strike and the airplane sustained substantial damage when the left wing struck a post. The pilot reported that there were no mechanical malfunctions or anomalies during the flight that would have prevented normal flight operations. The pilot reported that he considered going around, but due to the wind and terrain rejected the idea. ## Aircraft - Registration: [N91025](https://openairdocs.org/aircraft/N91025), registered now, S/N 20700016, built 1969 (OpenAirDocs) - Reported make and model: CESSNA T207 (UNDESIGNAT) - Registry model: [Cessna T207](https://openairdocs.org/model/cessna-t207) (registry code 2073612) (OpenAirDocs) - Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 20700016 - Year built: 1969 - Airframe hours: 4536.7 - Engines: CONT MOTOR IO-550-F12B 300 horsepower reciprocating - Damage: Substantial damage - Flight: Part 135 - Operator: Smokey Bay Air Inc - Registered owner: Smokey Bay Air Inc - Airworthiness certificate: Standard, Utility; Standard, Normal - Last inspection: 100 hour, August 12, 2016 - Departed: PGM, Port Graham, AK - Destination: KEB, Nanwalek, AK - Flight plan: Company VFR - Airport: KEB, Nanwalek, runway 01, 1,850 × 50 ft, gravel - Equipment: Stall warning system, Satellite tracking device ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 63; injuries: none; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review August 1, 2016; seat: left; restraint: lap only; flight hours: 18,100 total, 40 in this make and model, 12,000 as pilot in command, 40 in the last 90 days, 40 in the last 30 days, 4.4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: 2,800 ft overcast - Temperature: 54 °F, dew point 54 °F - Altimeter: 29.89 inHg - Observed at: PASO, 9 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 20160823015179A](https://openairdocs.org/incident/20160823015179A), Aug 23, 2016: Cessna T207, Nanwalek, AK, Substantial damage. Nanwalek, AK (keb): N91025, Cessna T207, landed on runway 1 and ran off the end of the runway. Pilot decision to first touchdown 500 feet down the runway… ## Other investigations on N91025 (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 ANC25FA035](https://openairdocs.org/ntsb/ANC25FA035), Apr 28, 2025: Cessna T207 (N91025), Nanwalek, AK, substantial damage, 2 fatal, investigation ongoing ## Docket (3 files) The files NTSB released with the investigation on December 6, 2016, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=93879. 2.7 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40447059&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Nanwalek Airport Facility Directory (item 2, .PDF, 114 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40447060&FileExtension=.PDF&FileName=Nanwalek%20Airport%20Facility%20Directory-Master.PDF - Photos (Courtesy of FAA) (item 3, .PDF, 3 photos, 344 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40447061&FileExtension=.PDF&FileName=Photos%20(Courtesy%20of%20FAA)-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.