# Accident 19980716016679A: Cessna 207A, King Salmon, AK, July 16, 1998 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: July 16, 1998, 17:25 local time - Place: King Salmon, AK - Airport: King Salmon - Damage: Substantial damage - Phase of flight: Fcd/Prec Ldg From Cruise - Operating rules: Air taxi and commuter (Part 135) - Operator: YAAA - Location: 58.7493° N, 156.5402° W: From the FAA, an estimate near the named town, within about 3 miles - Nearby events: https://openairdocs.org/map.md?lat=58.7493&lon=-156.5402&mi=10 - Aircraft: N1763U, a cancelled registration (https://openairdocs.org/deregistered/N1763U-2018-01-11) (OpenAirDocs) - Registry model: Cessna 207A (registry code 2073604, https://openairdocs.org/model/cessna-207a) (OpenAirDocs) - Registry engine: Continental IO-520 series (registry code 17032, https://openairdocs.org/engine/continental-io-520-series) (OpenAirDocs) - Reported make and model: CESSNA 207A - Reported engine: CONT IO520F - Fatal injuries: 0 - Pilot flight hours: 14,000 total, 4,000 in this make and model, 230 in the last 90 days - NTSB investigation: [NTSB ANC98LA099](https://openairdocs.org/ntsb/ANC98LA099) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/19980716016679A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. (.4)THE PILOT HAD LEVELED OFF IN CRUISE AND WAS LEANING THE FUEL MIXTURE WHEN THE MIXTURE CONTROL CEASED TO HAVE EFFECT. THE PILOT STATES THAT THE ENGINE BEGAN TO LOSE POWER, THEN QUIT. THE AIRPLANE NOSED OVER DURING THE EMERGENCY LANDING IN TUNDRA. POSTACCIDENT INSPECTION REVEALED THE MIXTURE CONTROL CABLE HAD UNSCREWED FROM THE MIXTURE CONTROL ARM. THE CABLE HAD BEEN REPLACED 238 HOURS PRIOR TO THE ACCIDENT, AND INSPECTED 142, AND 44 HOURS PRIOR TO THE ACCIDENT. THE SERVICE MANUAL SPECIFIES THE JAM NUT WHICH LOCKS THE CABLE TO THE ARM BE TORQUED TO 15 +/-2 INCH-POUNDS. THERE IS NO SAFETY WIRE REQUIREMENT FOR THIS LINKAGE. IF DISCONNECTED, GRAVITY WILL ALLOW THE MIXTURE CONTROL ARM TO FALL TO IDLE-CUTOFF. (-23) ON THURSDAY, JULY 16, 1998, AT APPROXIMATELY 17:25 ADT, A CESSNA 207, N1763U, DEPARTED FROM KING SALMON AIRPORT FOR SOUTH NAKNEK AIRPORT. THE AIRCRAFT WAS OPERATED BY YUTE AIR AS FLIGHT 670. ABOUT 5 MINUTES AFTER DEPARTURE THE PILOT LEANED THE ENGINE. THE MIXTURE CONTROL APPEARED TO NOT BE WORKING PROPERLY SO THE PILOT RETURNED IT TO THE FULL RICH POSITION. THE ENGINE STARTED TO RUN ROUGH AND THEN BEGAN TO LOSE POWER. THE PILOT TURNED THE A IRCRAFT BACK TOWARDS KING SALMON, BUT COULD NOT MAINTAIN ALTITUDE. THE ENGINE QUIT APPROXIMATELY 7 MILES SOUTH OF THE AIRPORT. DURING THE EMERGENCY LANDING THE AIRCRAFT FLIPPED UPSIDE DOWN. THE NOSE LANDING GEAR, PROP, AND RIGHT MAIN LANDING GEAR WHEEL BROKE OFF DURING THE IMPACT. AIRCRAFT FUSELAGE, COWLING, AND FLAPS WERE DAMAGED. THE PILOT SUSTAINED MINOR INJURIES. SUBSEQUENT INVESTIGATION REVEALED THAT THE MIXTURE CONTROL CABLE HAD COME LOOSE FROM THE MIXTURE CONTROL ROD END. ## The NTSB's investigation of this event (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 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. ## Other reports on N1763U (5) Matched to the same aircraft by N-number and date. - [Incident 19950615038579I](https://openairdocs.org/incident/19950615038579I), Jun 15, 1995: Cessna 207 (N1763U), Bethel, AK, Minor damage. Engine went to idle en route. Made forced landing. Throttle arm bushing came loose and wore through brass throttle ar - [Accident 19930529019799A](https://openairdocs.org/incident/19930529019799A), May 29, 1993: Cessna 207 (N1763U), Bethel, AK, Substantial damage. Landed nose wheel first. Wheel barrowed. Lost control. Veered of runway and nosed up. - [Accident 19880922044819A](https://openairdocs.org/incident/19880922044819A), Sep 22, 1988: Cessna 207A (N1763U), New Koliganek, AK, Substantial damage. Landed long,bounced and ballooned. Ran off the end of the runway into a swamp. - [Accident 19861119063939A](https://openairdocs.org/incident/19861119063939A), Nov 19, 1986: Cessna 207A (N1763U), Manokotak, AK, Substantial damage. Pilot lost control and ran off the end of the runway. No engine malfunctions found. - [Accident 19780526014181A](https://openairdocs.org/incident/19780526014181A), May 26, 1978: Cessna 207A (N1763U), Brownsville, TX, Substantial damage From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record. --- 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.