# NTSB investigations: Continental IO-520-F NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 2 of 2 · 93 cases ## Cases, newest first - [NTSB ANC93IA115](https://openairdocs.org/ntsb/ANC93IA115.md): Cessna 207 · Nome, AK · Incident · No injuries · Incident investigation · Final report · Jul 9, 1993 · N9984M · Minor damage > The chafed fuel line and chafed electrical wire and the improper maintenance procedure used to secure the electrical wire with a tie wrap. - [NTSB ANC93LA098](https://openairdocs.org/ntsb/ANC93LA098.md): Cessna 207 · Grayling, AK · Accident · No injuries · Limited investigation · Final report · Jun 19, 1993 · N9869M · Substantial damage > The partial failure of the airplane's braking system. - [NTSB ANC93LA014](https://openairdocs.org/ntsb/ANC93LA014.md): Cessna 207 · Ekwok, AK · Accident · Serious injuries · Limited investigation · Final report · Nov 11, 1992 · N9237M · Substantial damage > The pilot failed to maintain airspeed and inadvertently stalled the airplane. Contributing to the accident were the pilots improper in flight planning/decision, her intentional flight into known adverse weather, and the fog and icing conditions. - [NTSB ANC92LA122](https://openairdocs.org/ntsb/ANC92LA122.md): Cessna 207A · St. Michael, AK · Accident · Minor injuries · Limited investigation · Final report · Aug 8, 1992 · N9970M · Substantial damage > The pilot attempted VFR flight into IMC weather conditions. Contributing to the accident were the mountainous/hilly terrain, and the low ceiling weather condition. - [NTSB ANC92LA119](https://openairdocs.org/ntsb/ANC92LA119.md): Cessna 207 · Funter Pass, AK · Accident · Serious injuries · Limited investigation · Final report · Aug 6, 1992 · N94AK · Substantial damage > The pilots inadequate visual lookout, and his inadvertent VFR flight into IMC conditions. Contributing to the accident were the clouds. - [NTSB ANC91LA038](https://openairdocs.org/ntsb/ANC91LA038.md): Cessna 207 · Saint Marys, AK · Accident · Minor injuries · Limited investigation · Final report · Mar 27, 1991 · N9968M · Substantial damage > The pilot-in-command's failure to maintain VFR flight in instrument meteorological conditions while maneuvering on a VFR flight plan. Factors related to the accident was the pic's failure to evaluate the weather conditions that existed. - [NTSB ANC91LA027](https://openairdocs.org/ntsb/ANC91LA027.md): Cessna 207 · Kivalina, AK · Accident · Minor injuries · Limited investigation · Final report · Feb 10, 1991 · N9651M · Substantial damage > The pilot's failure in not identifying the weather conditions along the route. Contributing to the accident was improper in flight planning and decision by the PIC and the whiteout conditions. - [NTSB ANC90FA101](https://openairdocs.org/ntsb/ANC90FA101.md): Cessna 207A · Aialak Bay, AK · Accident · 5 fatal · Field investigation · Final report · Jun 25, 1990 · N9985M · Destroyed > The pilot-in-command's attempt to fly under visual flight rules while in instrument meteorological conditions. Contributing factors to the accident were the low ceiling and surrounding mountainous terrain. - [NTSB ANC90LA090](https://openairdocs.org/ntsb/ANC90LA090.md): Cessna 206U · Taku, AK · Accident · No injuries · Limited investigation · Final report · Jun 17, 1990 · N9735Z · 2 aircraft · Minor damage > Failure of the pilot of N9735Z (C-206U) to see and avoid N756EJ (C-206G), and failure of company management to establish adequate separation procedures. - [NTSB ANC90LA026](https://openairdocs.org/ntsb/ANC90LA026.md): Cessna 207A · Nondalton, AK · Accident · No injuries · Limited investigation · Final report · Jan 12, 1990 · N9720M · Substantial damage > Improper planning/decision by the pilot. Factors related to the accident were: inadequate positioning of the temporary runway markers, snow covered runway/terrain conditions, partial whiteout condition, and the snow berms at the edges of the runway. - [NTSB ANC89FA042](https://openairdocs.org/ntsb/ANC89FA042.md): Cessna 207 · Nome, AK · Accident · Serious injuries · Field investigation · Final report · Feb 9, 1989 · N73771 · Substantial damage > The partial loss of power resulting from fuel interruption due to a blockage in the engine fuel pump low pressure check valve. - [NTSB ANC89LA029](https://openairdocs.org/ntsb/ANC89LA029.md): Cessna 207 · Kivalina, AK · Accident · Minor injuries · Limited investigation · Final report · Dec 28, 1988 · N9651M · Substantial damage > The air taxi pilot was on a scheduled cargo flight to a remote village in western Alaska when he reportedly had a partial loss of engine power. He said that he was unable to maintain altitude and made a forced landing on a frozen lake. He is uncertain why the… - [NTSB ANC89LA025](https://openairdocs.org/ntsb/ANC89LA025.md): Cessna 207 · Kotzebue, AK · Accident · No injuries · Limited investigation · Final report · Dec 21, 1988 · N9948M · Substantial damage > The air taxi pilot stated that he had encountered freezing drizzle and other icing conditions prior to landing, accumulating approximately 3/8' of ice on the airplane. He said that as he began his landing flare, the airplane stalled, and he was unable to… - [NTSB ANC89LA007](https://openairdocs.org/ntsb/ANC89LA007.md): Cessna 207 · Perde Bay, AK · Accident · No injuries · Limited investigation · Final report · Oct 10, 1988 · N9965M · Substantial damage > The pilot experienced a power loss during cruise flight and during his descent the engine stopped producing power. He landed on the tundra and the airplane was substantially damaged. An engine teardown revealed that the number 4 piston was burned past… - [NTSB ANC88LA106](https://openairdocs.org/ntsb/ANC88LA106.md): Cessna 207A · Cooper Landing, AK · Accident · No injuries · Limited investigation · Final report · Aug 8, 1988 · N9829M · Substantial damage > After loss of oil pressure then engine failure at 2,800 feet MSL, the pilot elected to make an emergency Landing along the shore line. After the pilot and passengers exited the aircraft, the airplane sank into 100 to 150 feet of water. Neither the airplane… - [NTSB ANC88IA047](https://openairdocs.org/ntsb/ANC88IA047.md): Cessna 207A · Takslesuk Lake, AK · Incident · No injuries · Incident investigation · Final report · Apr 14, 1988 · N73188 · Minor damage > The scheduled commuter flight, friendship flight 305, was en route from chevak, Alaska to bethel, Alaska. During cruise flight, the airplane experienced an engine failure resulting a a forced landing on rough, snow covered terrain. The pilot-in-command stated… - [NTSB ANC88FA020](https://openairdocs.org/ntsb/ANC88FA020.md): Cessna 207A · Ambler, AK · Accident · 1 fatal · Field investigation · Final report · Dec 11, 1987 · N9979M · Substantial damage > The plt of the air taxi cargo flt was operg at night in marginal VFR conds when the acft struck rising terrain. The acft was fnd the next day at aprx 1000 ast, some 15 mi off the intended route. The plt was unconscious & suffering fm hypothermia & other… - [NTSB ANC88DAG01](https://openairdocs.org/ntsb/ANC88DAG01.md): Cessna 207A · Atmautluak, AK · Accident · No injuries · Final report · Dec 6, 1987 · N73503 · Substantial damage > The aircraft was on final approach when a vehicle appeared to be on the runway coming at the aircraft. The pilot pulled the aircraft up over the snow machine but settled back to the ground alongside the runway. - [NTSB ANC88LA008](https://openairdocs.org/ntsb/ANC88LA008.md): Cessna 207A · Sheldon Point, AK · Accident · No injuries · Limited investigation · Final report · Oct 17, 1987 · N1472M · Substantial damage > The air taxi pilot attempted to land on a short narrow gravel air strip in crosswind conditions. He ran off the end of the runway and the airplane was substantially damaged. The wind was in excess of recommendations for the type acft. A witness reported that… - [NTSB ANC87FA023](https://openairdocs.org/ntsb/ANC87FA023.md): Cessna 207A · Kenai, AK · Accident · 1 fatal · Field investigation · Final report · Jan 14, 1987 · N9395M · Destroyed > Wx conds on the day of the acdnt were rprtd to be extremely variable. Initially, when the plt obtained a wx briefing, VFR flt was not rcmdd. Later, the wx improved & the plt elected to proceed on the flt. While en route, he enctrd snow showers & dscndd to… - [NTSB ANC86LA158](https://openairdocs.org/ntsb/ANC86LA158.md): Cessna 207A · Mountain Villag, AK · Accident · No injuries · Limited investigation · Final report · Sep 17, 1986 · N9736M · Substantial damage > The airline transport pilot who is also a certificated airframe and powerplant mechanic elected to defer brake repairs until the end of the flying day. The fatigued right brake line failed before the end of the day's flying activity. During lndg the brakes… - [NTSB ANC86IA137](https://openairdocs.org/ntsb/ANC86IA137.md): Cessna 207A · Togiak, AK · Incident · No injuries · Incident investigation · Final report · Aug 24, 1986 · N1472M · Minor damage > After landing the airplane was taxiing to park and the pilot noticed the steering becoming stiff. He stopped the airplane and examined the nose gear and found it to have pivoted forward with the wheel coming to rest against the nose cowling. The mechanic… - [NTSB ANC86FA078](https://openairdocs.org/ntsb/ANC86FA078.md): Cessna 207A · Saint Marys, AK · Accident · 1 fatal · Field investigation · Final report · Jun 17, 1986 · N9699M · Destroyed > The pilot stalled the airplane while making a steep turn to avoid high voltage power lines. The airplane caught fire on impact and the air taxi pilot subsequently died of extensive thermal injuries. The plt was flying in formation with another acft at low… - [NTSB DEN86FA115](https://openairdocs.org/ntsb/DEN86FA115.md): Cessna 207A · Ogden, UT · Accident · Minor injuries · Field investigation · Final report · Apr 12, 1986 · N1721Q · Substantial damage > Acft was en route to slc where it was to be put on static display with other acft equipped with soloy-conversions (allison 250-C20S turboshaft engine installation). During descent through 12,000 ft into slc area eng flamed out and the prop auto-feathered. Plt… - [NTSB ANC86IA033](https://openairdocs.org/ntsb/ANC86IA033.md): Cessna 207 · Barrow, AK · Incident · No injuries · Incident investigation · Final report · Mar 10, 1986 · N9943M · Minor damage > Engine failed and seized in flight. A forced landing and the snow covered tundra followed with no injuries & minor damage to the airplane. Engine teardown and exam revealed #3 cylinder wrist pin broken. - [NTSB ANC86LA003](https://openairdocs.org/ntsb/ANC86LA003.md): Cessna 207A · Nelson Island, AK · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 1985 · N9570M · Substantial damage > The pilot stated that he lost 90 percent of aircraft control and an alarming rate of lost of altitude. At the time of the accident the wind was reported as 140 degrees at 30 knots with gust 40 knots. Chief pilot stated crossing the Island at a higher altitude… - [NTSB ANC85LA151](https://openairdocs.org/ntsb/ANC85LA151.md): Cessna C-207 · Mountain Villag, AK · Accident · No injuries · Limited investigation · Final report · Aug 12, 1985 · N9480M · Substantial damage > The pilot-in-command was aware of the weather he was operating in and intended to fly through a locally well known pass. He misidentified the pass and found himself in a narrow valley. There was insufficient width to effect a 180 degree turn and the rising… - [NTSB ANC85FA093](https://openairdocs.org/ntsb/ANC85FA093.md): Cessna 207 · Eek, AK · Accident · Serious injuries · Field investigation · Final report · Jun 15, 1985 · N9828M · Substantial damage > The pilot-in-command stated that during the takeoff roll he was moving the flap control lever up and down to effect a lift off. The airplane never left the runway and ran off the end of the ten foot embankment, traveled 140 feet before striking a bank and… - [NTSB ANC85FA085](https://openairdocs.org/ntsb/ANC85FA085.md): Cessna C-207A · Golovin, AK · Accident · 2 fatal · Field investigation · Final report · May 16, 1985 · N73635 · Substantial damage > According to the pilot-in-command, he was attempting to fly through a mountain saddle. As he turned towards the mountain and began his climb the weather deteriorated rapidly with ceilings zero, visibility zero and severe turbulence. The airplane struck the… - [NTSB ANC85IA083](https://openairdocs.org/ntsb/ANC85IA083.md): Cessna 207A · Cape Simpson, AK · Incident · No injuries · Incident investigation · Final report · May 13, 1985 · N9943M · Minor damage > # 6 Cyl exploded in flt due to connecting rod coming apart. Post-accident insp revealed that nut had back off due to inadequate torque & no cotter key installed in nut. - [NTSB ANC85LA109](https://openairdocs.org/ntsb/ANC85LA109.md): Cessna 207 · Emmonak, AK · Accident · No injuries · Limited investigation · Final report · May 12, 1985 · N9975M · 2 aircraft · Minor damage > The pilot-in-command stated he was passed by the airplane N9975M and did not see it again until he was at his right rear and slightly below. The propeller of N9975M struck the aileron and during the evasive maneuvering the left main gear of N9975M struck the… - [NTSB ANC85LA062](https://openairdocs.org/ntsb/ANC85LA062.md): Cessna 207 · Port Graham, AK · Accident · No injuries · Limited investigation · Final report · Apr 15, 1985 · N9970M · Substantial damage > The plt lost directional control while taking off from a rwy covered with 4 to 6 inches of snow, ice & slush. The acft then swerved sideways, collided with a snow bank & was damaged. The arpt was located on public domain & was not regularily attended or… - [NTSB ANC85LA053](https://openairdocs.org/ntsb/ANC85LA053.md): Cessna 207 · Mcgrath, AK · Accident · Minor injuries · Limited investigation · Final report · Mar 11, 1985 · N9937M · Substantial damage > The acft contacted trees during a forced landing following an engine failure. Investigation revealed the crankshaft had failed for undetermined reasons. The enging had a total time of 1312 hrs since major overhaul. - [NTSB ANC85LA034](https://openairdocs.org/ntsb/ANC85LA034.md): Cessna 207 · Mt Village, AK · Accident · Minor injuries · Limited investigation · Final report · Jan 9, 1985 · N9946M · Substantial damage > Takeoff was performed downhill on the ice covered 2200 ft gravel airstrip. Plt stated liftoff was late but given the surrounding terrain, the takeoff was continued rather then aborted. During climb the acft contacted the roof of an abandoned building. Acft… - [NTSB ANC85LA032](https://openairdocs.org/ntsb/ANC85LA032.md): Cessna 207A · Nuiqsut, AK · Accident · No injuries · Limited investigation · Final report · Jan 4, 1985 · N9237M · Substantial damage > After a night landing by the copilot, and after the first bounce, the pilot in command took control of the aircraft after it developed a high sink rate. The pilot then ground looped the aircraft. - [NTSB ANC82FA010](https://openairdocs.org/ntsb/ANC82FA010.md): Cessna 207A · Tyonek, AK · Accident · 4 fatal · Closed · Dec 10, 1981 · N9461M · Destroyed - [NTSB ANC81DA111](https://openairdocs.org/ntsb/ANC81DA111.md): Cessna 207A · Golovin, AK · Accident · No injuries · Closed · Sep 4, 1981 · N73771 · Substantial damage - [NTSB ANC81FA091](https://openairdocs.org/ntsb/ANC81FA091.md): Cessna 207A · Dillingham, AK · Accident · 1 fatal · Closed · Aug 4, 1981 · N9552M · Destroyed - [NTSB ANC81DA052](https://openairdocs.org/ntsb/ANC81DA052.md): Cessna 207A · Marshall, AK · Accident · No injuries · Closed · May 9, 1981 · N6874M · Substantial damage - [NTSB ANC81FA031](https://openairdocs.org/ntsb/ANC81FA031.md): Cessna 207A · Teller, AK · Accident · Minor injuries · Closed · Mar 19, 1981 · N73503 · Substantial damage - [NTSB NYC81DFJ04](https://openairdocs.org/ntsb/NYC81DFJ04.md): Cessna 206 · Jamestown, NY · Accident · No injuries · Closed · Feb 10, 1981 · N2912Q · Substantial damage - [NTSB ANC80DA100](https://openairdocs.org/ntsb/ANC80DA100.md): Cessna 207A · Karluk, AK · Accident · Minor injuries · Closed · Sep 15, 1980 · N75570 · Substantial damage - [NTSB ANC76AA110](https://openairdocs.org/ntsb/ANC76AA110.md): Cessna 206 · Kenai, AK · Accident · No injuries · Closed · Jul 12, 1976 · N8091Z · Substantial damage ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17237')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=17237&page=2 --- 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.