# NTSB ANC93LA072: Cessna 207, N1763U, Bethel, AK, May 29, 1993 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 29, 1993, 15:35 local (23:35 UTC) - Place: Bethel, AK - Coordinates: 60.810977, -161.849548 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=60.8110&lon=-161.8495&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 15, 1994 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 2345 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC93LA072 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/2345/pdf - Page: https://openairdocs.org/ntsb/ANC93LA072 ## Probable cause THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE DURING LANDING. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - directional control - not maintained, pilot in command (cause) - ground loop/swerve - inadvertent, pilot in command ## Analysis THE PILOT STATED THAT THE AIRPLANE BEGAN VEERING OFF TO THE LEFT GRADUALLY AFTER THE NOSEWHEEL TOUCHED DOWN ON THE RUNWAY. RIGHT RUDDER WAS APPLIED, BUT THE AIRPLANE CONTINUED TO VEER TO THE LEFT. FULL RIGHT BRAKE WAS APPLIED, BUT IT DID NOT CORRECT THE SITUATION. THE AIRPLANE SKIDDED OFF THE RUNWAY AND NOSED UP. EXAMINATION OF THE AIRPLANE DID NOT REVEAL ANY MECHANICAL MALFUNCTION OF THE BRAKE SYSTEM OR THE NOSE WHEEL STEERING OR CENTERING MECHANISM. ## Factual narrative On May 29, 1993, at 1535 Alaska daylight time, a wheel equipped Cessna 207 airplane, N1763U, registered to and operated by Yute Air Alaska, Inc. of Dillingham, Alaska, veered off the runway after landing at Bethel, Alaska. The positioning flight, operating under 14 CFR Part 91, last departed Tununik, Alaska, and the destination was Bethel. No flight plan was filed and visual meteorological conditions prevailed. The airplane was substantially damaged and the Commercially Certificated Pilot-in- Command, the sole occupant, was not injured. According to the Pilot-in-Command, upon touchdown on the runway at Bethel, the airplane began to veer to the left slowly at first. Right rudder was applied to maintain directional control, but the airplane continued to veer to the left. The pilot then stated she applied right brake, but it did not correct the ground track. The airplane departed the left side of the runway and nosed up. The airplane taxied to the hangar under its own power with no directional control problems. Examination of the airplane by the Director of Maintenance at the Bethel Operation did not reveal any mechanical problems with the airplane. he also stated that the skid marks on the runway clearly indicated that the airplane's nose wheel touched the runway's surface first, and the airplane wheel barrelled down the runway just prior to the airplane veering off the runway. The Pilot-in-Command stated she felt there was a problem with the nose wheel centering mechanism and that the nose wheel was cockedto one side upon touchdown. Examination of the airplane did not reveal any evidence to support a centering mechanism failure. The wind was from 330 degrees at 10 knots and the airplane landed on runway 36. Toxicological results were negative. ## Aircraft - Registration: [N1763U](https://openairdocs.org/deregistered/N1763U-2018-01-11), registration cancelled 2018-01-11, S/N 20700363, built 1976 (OpenAirDocs) - Reported make and model: CESSNA 207 - Registry model: [Cessna 207A](https://openairdocs.org/model/cessna-207a) (registry code 2073604) (OpenAirDocs) - Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 20700363 - Airframe hours: 8993 - Engines: Continental IO-520-F-17 300 horsepower reciprocating - Damage: Substantial damage - Flight: Part 91 - Operator: Yute Air, doing business as Yute Air - Registered owner: Yute Air, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, May 4, 1993, 82 hours before - Departed: TNK, TUNUNIK, AK - Airport: BET, Bethel, runway 36, 6,400 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 22; commercial; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 1,637 total, 230 in this make and model, 1,520 as pilot in command, 322 in the last 90 days, 87 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 330° at 10 knots - Visibility: 30 statute miles - Lowest ceiling: none - Temperature: 64 °F, dew point 45 °F - Altimeter: 30.00 inHg - Observed at: BET ## 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 19930529019799A](https://openairdocs.org/incident/19930529019799A), May 29, 1993: Cessna 207, Bethel, AK, Substantial damage. Landed nose wheel first. Wheel barrowed. Lost control. Veered of runway and nosed up. ## Other investigations on N1763U (4) 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 ANC98LA099](https://openairdocs.org/ntsb/ANC98LA099), Jul 17, 1998: Cessna 207 (N1763U), King Salmon, AK, substantial damage. Probable cause: The disconnection of the mixture control cable from the mixture control arm. Factors associated with this accident were the inadequate 100 hour inspections performed by company mechanics. - [NTSB ANC88LA146](https://openairdocs.org/ntsb/ANC88LA146), Sep 22, 1988: Cessna 207A (N1763U), New Koliganek, AK, substantial damage - [NTSB ANC87LA015](https://openairdocs.org/ntsb/ANC87LA015), Nov 19, 1986: Cessna 207A (N1763U), Manokotak, AK, substantial damage - [NTSB FTW78FRD47](https://openairdocs.org/ntsb/FTW78FRD47-196844), May 26, 1978: Cessna 207A (N1763U), Brownsville, TX, 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.