NTSB investigations, AK
55 cases where the first occurrence was “Loss of engine power(partial) - mech failure/malf”.
Cases per year
| 1982 | 8 |
|---|---|
| 1983 | 2 |
| 1984 | 2 |
| 1986 | 6 |
| 1987 | 1 |
| 1988 | 2 |
| 1989 | 2 |
| 1990 | 1 |
| 1991 | 3 |
| 1992 | 1 |
| 1993 | 2 |
| 1994 | 2 |
| 1995 | 3 |
| 1996 | 3 |
| 1997 | 4 |
| 1998 | 4 |
| 1999 | 2 |
| 2001 | 3 |
| 2002 | 1 |
| 2007 | 3 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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.\"eventStateOrRegion\" = 'AK' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 352)
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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."eventStateOrRegion" = 'AK' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 352) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ANC07LA058Accident · Minor injuriesLimited investigationFinal reportCessna 150 · Fairbanks, AKA partial loss of engine power due to a stuck engine exhaust valve during takeoff initial climb. A contributing factor was the airplane's excessive gross weight.NTSB ANC07LA056Accident · No injuriesLimited investigationFinal reportPiper PA-12 · Anchorage, AKThe malfunction of an engine magneto during cruise flight, which resulted in a partial loss of engine power, and an on-ground encounter with terrain. A factor associated with the accident was the high vegetation at the off-airport landing site.NTSB ANC07LA016Accident · No injuriesLimited investigationFinal reportDouglas C54G-DC · Nenana, AKThe failure of an engine cylinder during cruise flight, which resulted in an in-flight fire, and subsequent emergency gear-up landing on snow-covered tundra. A factor in the accident was the failure of the fire suppression equipment to extinguish the fire.NTSB ANC02LA121Accident · No injuriesLimited investigationFinal reportGardner Kitfox · Fairbanks, AKA partial loss of engine power due to an engine bearing failure during the takeoff initial climb. A factor in the accident was unsuitable terrain for a forced landing.NTSB ANC01LA138Accident · Minor injuriesLimited investigationFinal reportde Havilland DHC-3 · Cordova, AKThe loss of engine power during cruise due to the fracture of an engine cylinder exhaust valve.NTSB ANC01TA076Accident · No injuriesFinal reportBell 212 · Clear, AKThe pilot's selection of an unsuitable landing site following a partial loss of power during approach to landing in a multiengine helicopter. Factors associated with the accident are an automatic fuel control unit that had a restricted fuel flow due to an…NTSB ANC01LA039Accident · No injuriesLimited investigationFinal reportHelio H-295 · Clear, AKThe shifting of engine connecting rod bearings, and the fracture of an engine connecting rod.NTSB ANC99LA082Accident · No injuriesLimited investigationFinal reportMaule M-4-220C · Mcgrath, AKA separation of the number 4 engine cylinder, and a fracture of the number 4 engine connecting rod.NTSB ANC99LA060Accident · Serious injuriesLimited investigationFinal reportAeronca 15AC · Pedro Bay, AKA separation of the number 3 engine cylinder head assembly, and a burned through fuel line.NTSB ANC98LA109Accident · No injuriesLimited investigationFinal reportEnstrom F-28F · Skwentna, AKA loss of engine power due to a fractured number three cylinder intake manifold flange, and the pilot's inability to maintain the proper rate of descent during the autorotation flare. A contributing factor associated with the accident was the downwind…NTSB ANC98LA099Accident · Minor injuriesLimited investigationFinal reportCessna 207 · King Salmon, AKThe 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 ANC98LA058Accident · No injuriesLimited investigationFinal reportLuscombe 8A · Paxson, AKA loss of engine power due to a failure of the engine's number 3 intake valve. A factor in the accident was the unsuitable terrain for a forced landing.NTSB ANC98FA019Accident · 1 fatalField investigationFinal reportCessna 207 · Homer, AKA fatigue failure, and partial separation of the number 6 engine cylinder head assembly, the operator's inadequate progressive inspection performed by company maintenance personnel, and the pilot's inadvertent stall during a maneuvering turn toward an…NTSB ANC97LA158Accident · No injuriesLimited investigationFinal reportPilatus PC-6-350 · Palmer, AKAn underspeed of the propeller system.NTSB ANC97LA141Accident · No injuriesLimited investigationFinal reportCessna 150H · Yakutat, AKA partial blockage of the main fuel supply line to the engine, caused by improper manufacture of the fuel line by unknown maintenance personnel.NTSB ANC97FA099Accident · 4 fatalField investigationFinal reportde Havilland DHC-2 · Skwentna, AKa loss of engine power due to the fatigue failure of the no.1 exhaust push rod. Factors contributing to the accident were: insufficient information on pushrod inspection and overhaul from the manufacturer, unsuitable terrain available for landing, and the…NTSB ANC97LA042Accident · Minor injuriesLimited investigationFinal reportCessna 207 · Grayling, AKThe partial loss of engine power due to a fractured connecting rod bolt, which was precipitated by fatigue. A factor associated with the accident was the snow covered terrain in the emergency landing site.NTSB ANC97LA005Accident · No injuriesLimited investigationFinal reportKen Seright Rotorway Exec 162F · Haines, AKa leaking coolant hose that saturated the induction air filter and one electronic ignition system with coolant. Unsuitable terrain for a forced landing was a related factor in the accident.NTSB ANC96FA162Accident · 3 fatalField investigationFinal reportCessna 206G · Anchorage, AKimproper installation of a connecting bolt in the throttle linkage, which resulted in a worn/disconnected throttle arm, partial loss of engine power, and a forced landing after takeoff.NTSB ANC96FA059Accident · 1 fatalField investigationFinal reportCessna 150 · Palmer, AKloss of engine power due to a malfunction of the airplane's magneto ignition system, and the pilot's failure to have an annual inspection performed. Factors relating to the accident were: the pilot's lack of recent experience and inadequate in-flight planning…NTSB ANC95LA107Accident · No injuriesLimited investigationFinal reportHughes 500D · Paxson, AKFuel starvation due to acrylamide contamination in the fuel control inlet filter. The lack of suitable terrain for a forced landing was a related factor.NTSB ANC95LA052Accident · No injuriesLimited investigationFinal reportCessna 205 · Anchorage, AKA failure of the engine driven fuel pump. Factors in the accident were the pilots' inadequate in-flight planning and unsuitable terrain in the area of the forced landing.NTSB ANC95LA029Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Akiak, AKThe partial loss of engine power due to an erratic spark plug.NTSB ANC94LA129Accident · No injuriesLimited investigationFinal reportPiper PA-18 · Tok, AKThe worn cam shaft lobe and worn valve lifter.NTSB ANC94IA049Incident · Minor injuriesIncident investigationFinal reportCessna 207 · Anchorage, AKThe partial failure of the no. 4 piston from over temperature (detonation).NTSB ANC93IA093Incident · No injuriesIncident investigationFinal reportCessna 206 · Portage, AKThe failure of the number two cylinder connecting rod bearing due to the shifting of the bearing within its journal race which produced an oil starvation/thermal distress event.NTSB ANC93LA029Accident · No injuriesLimited investigationFinal reportPiper PA-32 · Port Heiden, AKThe failure of the number 3 cylinder intake valve stem. A factor in the degree of damage the aircraft sustained in the mishap was attributable to the off airport emergency landing on show covered tundra.NTSB ANC92LA152Accident · Serious injuriesLimited investigationFinal reportCessna 206 · Fort Yukon, AKFatigue failure of an engine cylinder precipitated by the pilot-in-command intentionally exceeding the engine performance ratings in order to sustain flight in the grossly overweight condition. A factor contributing to the accident was the high grass. A…NTSB ANC91LA095Accident · No injuriesLimited investigationFinal reportCessna 150L · Fairbanks, AKThe partial loss of engine power resulting in a forced landing on unsuitable terrain and subsequent nose over during the landing roll. Contributing to the accident was the improperly performed 100 hour inspection by company maintenance personnel.NTSB ANC91LA096Accident · No injuriesLimited investigationFinal reportDe Havilland DHC-2 · King Salmon, AKThe forced landing on the rough terrain and the engine power loss due to the failure of the engine collector intermediate bearings.NTSB ANC91LA026Accident · Minor injuriesLimited investigationFinal reportMBB BO-105-CBS-4 · Valdez, AKWas the pilot-in-command's failure to properly use the approval checklist, improper procedures and directives.NTSB ANC90LA103Accident · Minor injuriesLimited investigationFinal reportDe Havilland DHC-3 · Beaver Village, AKMechanical failure of an exhaust rocker arm.NTSB ANC90FA010Accident · No injuriesField investigationFinal reportCessna A185E · Anchorage, AKThe throttle control linkage became disconnected on the first flight after an annual inspection due to improper maintenance. Darkness and high vegetation were contributing factors.NTSB ANC89FA042Accident · Serious injuriesField investigationFinal reportCessna 207 · Nome, AKThe partial loss of power resulting from fuel interruption due to a blockage in the engine fuel pump low pressure check valve.NTSB ANC88LA138Accident · No injuriesLimited investigationFinal reportde Havilland DHC-2 · Mcgrath, AKWhile cruising, the pilot-in-command experienced a rough engine and finally an unexplained power reduction to idle. He was unable to glide the float equipped airplane to a body of water and executed a forced landing on the tundra where the airplane sustained…NTSB ANC88LA039Accident · No injuriesLimited investigationFinal reportCessna 207 · Ruby, AKThe aircraft was over the airport at 2,000 feet MSL when the engine quit. The aircraft crashed one mile north of the airport. Examination of the aircraft engine revealed a broken throttle control which would cause the engine to go to idle.NTSB DCA88MA011Accident · 6 fatalMajor investigationFinal reportPiper PA-31-350 · Kenai, AKThe pilot had just departed the runway when he reported to the flight service station that he had engine problems. The aircraft was observed by witnesses to be about 300 ft on a descending downwind. The pilot stated that he was circling for runway one.…NTSB ANC87LA010Accident · No injuriesLimited investigationFinal reportTaylorcraft BC-12D · Unalakleet, AKThe private pilot with 14 hours experience in this airplane did not recognize that the carburetor heat control was not functioning properly. He did not recall draining the airplane's fuel sumps after refueling from exposed fuel tanks prior to takeoff.…NTSB ANC86FA116Accident · 2 fatalField investigationFinal reportStinson 108-2 · Willow, AKAbout 5 to 10 min prior to the acdnt, svrl witnesses in the vicinity of the Willow arpt saw the acft headed southbound. They rprtd the eng was running rough, but they saw no smoke or fire. Aprx 3 mi further south, other witnesses saw the acft make a 180 deg…NTSB ANC86LA099Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Barrow, AKThe plt stated there were mechanical problems with the acft but it was decided to fly it back to another arpt for repairs. Enroute the plt shut down the right eng because of an oil leak. While attempting to crossfeed fuel, the plt accidently pushed the left…NTSB ANC86LA084Accident · No injuriesLimited investigationFinal reportCessna 180 · Fairbanks, AKThe plt reported that a loud bang was heard at an alt of about 25 ft AGL shortly after takeoff. The acft settled to the rwy and pwr was regained. The acft then veered off the left side of the rwy and nosed over. Post accident inspection revealed maintenance…NTSB ANC86LA077Accident · Minor injuriesLimited investigationFinal reportPiper J3C-65 · Vogel Lake, AKAfter takeoff from a small lake the pilot stated that engine started to run rough. The pilot stalled the aircraft and crashed into the lake. Examination of the engine revealed that the number 4 cylinder primer port plug was broken.NTSB ANC86LA034Accident · No injuriesLimited investigationFinal reportBell 206B3 · Livengood, AKHelicopter experienced power loss while flying low level pipeline patrol, resulting in a hard landing and substantial damage to the acft. The governing pressure (pg) air line fitting was found loose on the power turbine fuel governor.NTSB SEA84LA108Accident · No injuriesLimited investigationFinal reportCessna 182P · Douglas Island, AKThe plt reported a complete loss of power with oil visible on the left side of the windscreen. The plt was unable to glide to land and the acft was ditched in deep water about 100 yds from shore. The acft was not recovered.NTSB ANC84IA035Incident · No injuriesIncident investigationFinal reportBell 47G-2A · Anchorage, AKThe acft tail rotor struck snow during an autorotative landing following an eng failure. The snow depth varied between 32 & 45 inches. Examination of the eng revealed that the rt hand mag was firing intermittently on two of the six distributor contacts which…NTSB ANC84FAG02Accident · No injuriesFinal reportCessna 170B · Mcgrath, AKThe plt reported that the eng had a partial loss of power & the application of carburetor heat did not improve the situation. He decided to land at the nearest arpt. According to the plt, the rwy was covered with aprx 2 ft of snow, and during the landing, the…NTSB ANC83FA131Accident · No injuriesField investigationFinal reportCessna U206 · Near Iliamna, AKThe eng lost power just after a water takeoff. The acft landed straight ahead in muskeg & tundra collapsing the floats. Eng teardown revealed a metallic 'nugget' in the left intake manifold between the #4 & #6 ports. Numerous marks were found on the inside of…NTSB ANC83LA021Accident · No injuriesLimited investigationFinal reportPiper PA-34-200T · Gambell, AKOn 12/12/82, the aircraft departed on a flight from savoonga to nome, AK. After departure, the pilot noted a problem with the left engine and diverted to Gambell, AK. While en route to Gambell, there was a gradual loss of oil pressure. After landing, the…NTSB ANC83LA011Accident · No injuriesLimited investigationFinal reportBeech 50 · Quinhagak, AKLeft engine lost power after takeoff. Pilot feathered left engine and returned to runway on one engine. Since he was overshooting he elected to land on grass wheels up to avoid overrun and collision with ditch. The following discrepancies were found: exhaust…NTSB ANC82DA083Accident · No injuriesFinal reportCessna 207A · Near Kipnuk, AKThe pilot reported that the aircraft lost oil pressure while he was in normal cruise. Shortly thereafter, the engine began running rough. The engine failed completely while he was on an approach for a forced landing. Shortly after touching down on uneven,…