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NTSB investigations

35,889 cases where the phase of flight was Enroute.

Cases, newest first

Query with SQL
duckdb -csv -c "WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
    crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
    current_codes AS (
      SELECT e.case_mkey, TRY_CAST(e.\"tier1Number\" AS INTEGER) AS code,
        row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e.\"isDefiningEvent\", false) DESC, e.position) AS n
      FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
      WHERE e.aircrafts_position = 1 AND e.\"tier1Number\" GLOB '[1-9][0-9]*'
        AND (e.\"isDefiningEvent\" OR e.case_mkey IN (SELECT \"mKey\" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE \"isPre1982\"))
    ),
    phases AS (
      SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
      FROM current_codes WHERE n = 1
      UNION ALL
      SELECT o.case_mkey, 'older', o.\"phaseOfFlightCode\", w.main
      FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o.\"phaseOfFlightCode\"
      WHERE o.aircrafts_position = 1 AND o.\"occurrenceNumber\" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
    ),
    case_phases AS (
      SELECT p.*, c.\"eventDate\", c.\"highestInjuryLevel\" = 'Fatal' AS fatal, a.aircraft_model_code
      FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = p.case_mkey
      LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
      WHERE c.\"eventDate\" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
    )
  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 case_mkey FROM case_phases WHERE main = 400)
  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.

NTSB LAX85FA123Accident · 2 fatalField investigationFinal reportCessna 120 · Irwindale, CAA Cessna 120, N9058Y, & a Cessna 152, N65599, collided in midair in the practice area for el monte, CA. Arpt. The two aircraft had departed the controlled arpt within three minutes of each other. Both had one instructor & one student aboard. The Cessna 152…Jan 27, 1985 · N9058Y · 2 aircraft · DestroyedNTSB MIA85LA087Accident · No injuriesLimited investigationFinal reportPiper PA-22-150 · Belle Glade, FLThe acft was damaged landing in a cane field after the eng lost power in cruise. The plt stated in his report that the eng behavior suggested carb ice but 'apparently it was too late.' The owner checked the throttle cable after the accident and reported that…Jan 26, 1985 · N5614Z · Substantial damageNTSB MIA85IA086Incident · No injuriesIncident investigationFinal reportCASA 212 · Arecibo, PRWhile on a scheduled international commuter flight during climb the crew noted a fire in the number one engine. The executed the emergency checklist and discharged two firebottles. The flames continued to exit the tailpipe. The crew executed a forced landing…Jan 25, 1985 · N436CA · Minor damageNTSB LAX85FA122Accident · Minor injuriesField investigationFinal reportPiper PA-24-400 · Helendale, CAShortly after initiating an enroute letdown, the acft experienced a catastrophic engine failure at about 4,500 ft MSL. Plt selected a road for an attempted emergency landing, but a car turned onto the road in front of him and forced a diversion to a nearby…Jan 24, 1985 · N3983D · Substantial damageNTSB DEN85IA068Incident · No injuriesIncident investigationFinal reportBoeing 737-291 · Steamboat Sprin, COShortly after departure from oakland, capt indicated he did not feel well. During the descent into den, the capt passed out for several minutes. He was revived with oxygen administered by a flt attendant. F/o made landing and capt taxied to the gate. Capt was…Jan 23, 1985 · N7343F · No damageNTSB LAX85FA119Accident · 2 fatalField investigationFinal reportCessna A185F · Pine Valley, CAThe acft crashed while the plt was returning from a x-country flt at night. Witnesses reported that the acft was flying low in a westerly direction & appeared to be following interstate highway 8. One witness, who was traveling westbound, stated that the acft…Jan 22, 1985 · N24BC · DestroyedNTSB FTW85FA100Accident · No injuriesField investigationFinal reportBell 206L-1 · Lafayette, LAThe acft departed at 2040 CST as a flt of 2 on a ferry flt. Shortly after level-off at 700 ft and power stabilized at 72% torque the engine failed and the acft yawed left and right. An autoration was initiated into a soft plowed field with a slight…Jan 22, 1985 · N2762X · Substantial damageNTSB LAX85LA117Accident · No injuriesLimited investigationFinal reportHughes 369E · Honolulu, HIWhile in flt over water at about 400 ft AGL & 1/2 mi from shore, the plt saw a large flock of white birds. He reported that he flared to a stop, but was unable to avoid the birds. After the helicopter struck bird(s), an extreme vibration developed. The plt…Jan 21, 1985 · N121JP · Substantial damageNTSB DEN85FA067Accident · 3 fatalField investigationFinal reportBell 206 L-1 · Carson, NMThe helicopter crashed in open terrain during a turn to reverse direction. Witnesses stated the acft was heading north and was on a converging course with high tension lines that were about 80 to 100 ft high and the belly counted spotlight was illuminated…Jan 21, 1985 · N40TE · DestroyedNTSB FTW85LA098Accident · Serious injuriesLimited investigationFinal reportCessna 182Q · Abilene, TXDeteriorating wx was encountered & the plt elected to land short of the original destn. He was provided vectors for an ILS apch to rwy 35R at abiline, TX. During the night apch, he encountered strong gusty winds, severe turbulence & restricted visibility. The…Jan 20, 1985 · N735QN · DestroyedNTSB DEN85LA066Accident · Minor injuriesLimited investigationFinal reportCessna 152 · Canon City, COThe acft contacted trees on mountainous terrain after encountering IFR wx en route. The plt reported that upon arriving in the Colorado springs area an undercast prevailed. He contacted pueblo apch and denver center and was advised that alamosa, CO, was…Jan 20, 1985 · N4925M · Substantial damageNTSB ATL85FA079Accident · 3 fatalField investigationFinal reportCessna 340 · Johnson City, TNThe acft was IFR at 17000 ft flying thru wx SIGMET area for severe icing when the plt requested a descent due to airframe ice and turbulence. During the descent the plt reported shutting down the right eng. On final apch for an off-arpt landing attempt the…Jan 17, 1985 · N4124Q · DestroyedNTSB MIA85FA081Accident · No injuriesField investigationFinal reportCessna 210M · Stuart, FLThe acft eng failed in flt & the plt made an emergency landing at night in an open field. The field was on sandy terrain that had been contoured to be an orange grove. While landing on the uneven soft terrain, the acft was damaged. An exam of the eng revealed…Jan 16, 1985 · N6164N · Substantial damageNTSB MIA85LA079Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Floridana, FLDuring cruise flight the pilot noted the engine was vibrating severely and spraying oil and then failed. Examination of the engine revealed that the #2 cylinder connecting rod had failed in overload. A small piece of gear tooth was found inside the engine the…Jan 15, 1985 · N1496X · Substantial damageNTSB DEN85LA063Accident · No injuriesLimited investigationFinal reportCessna 150 · Missoula, MTOn jan 14, 1985, a Cessna 150 nosed over after landing on a highway near Missoula, MT. The pilot stated he lost partial engine power due to carburetor icing conditions encountered enroute from great falls, MT. The pilot and his passenger were not injured. The…Jan 15, 1985 · N1416Q · Substantial damageNTSB CHI85LA087Accident · Minor injuriesLimited investigationFinal reportCessna 150L · Central, INThe acft contacted a tree and nosed over during a forced landing following fuel exhaustion. The student plt was observed by several witnesses to to remove the fuel caps during preflight and check the fuel quantity. The plt stated the fuel level was up to the…Jan 12, 1985 · N10543 · Substantial damageNTSB ATL85LA078Accident · No injuriesLimited investigationFinal reportCessna 182C · Batesville, MSAfter discharging parachutists at 7500 ft MSL the plt closed the throttle and descended to 1200 ft without clearing the engine. No pwr was available when the throttle was advanced upon reaching 1200 ft. a forced landing was made in a bean fld and the acft…Jan 12, 1985 · N9904T · Substantial damageNTSB LAX85LA113Accident · Minor injuriesLimited investigationFinal reportFairchild M-62C · Ballico, CAAt the conclusion of a local aerial application flt, acft experienced a loss of power and collided with trees during the subsequent forced landing. Examinaton of the aircraft revealed a broken fuel feed line aft of the wobble pump and no fuel in the lines or…Jan 10, 1985 · N68444 · Substantial damageNTSB ANC85FA036Accident · 1 fatalField investigationFinal reportBell 206BIII · Kenai, AKFlt was being conducted to off shore oil platform. Plt was checked out for off shore operations the day prior to this accident. Plt stated visibility above 500 ft was poor & he maintained 500 ft to stay below a stratus layer. Once over the water the only…Jan 10, 1985 · N59619 · DestroyedNTSB FTW85LA095Accident · Minor injuriesLimited investigationFinal reportCessna 172N · Houston, TXInitially, after a top overhaul, the eng would not run. The mechanic removed the carburetor & found a piece of silicon. After reinstalling the carburetor, the eng operated normally. The plt then took off on a maintenance test flt. As he began a descent back…Jan 9, 1985 · N73849 · Substantial damageNTSB LAX85FA101Accident · Minor injuriesField investigationFinal reportBell 206B · Trimmer, CAThe plt stated the helicopter lost pwr during cruise when he attempted to add pwr to climb. He stated that N2 decreased along with the activation of visual and audio engine out warnings. An autorotation was performed to a road, however, the helicopter slid…Jan 8, 1985 · N59549 · Substantial damageNTSB LAX85FA100Accident · 4 fatalField investigationFinal reportBeech B-35 · Death Valley, CAThe plt got an extended wx fcst the day prior to departure which indicated bkn to ovc clouds based at about 8,000 ft for the first part of the trip & sct to bkn clouds for the last half. Mountain areas were predicted to be obscured. Plt was encouraged to call…Jan 7, 1985 · N8889A · DestroyedNTSB ATL85FA077Accident · 4 fatalField investigationFinal reportCessna R182 · Crossville, TNThe acft collided with wooded, rising terrain at an elevation of about 2800 ft MSL on the west slope of hinch mountain. A passenger, who survived the crash, but died later due to burns, reported that light conditions were dark & she could not see anything…Jan 7, 1985 · N4716R · DestroyedNTSB MIA85LA073Accident · Minor injuriesLimited investigationFinal reportPiper PA-12 · Miramar, FLAn interruption of pwr was experienced as an abrupt steep dive maneuver was entered to release the banner towed by the acft. The plt then attempted a 180 deg turn at an alt of aprx 200 ft AGL to avoid pwr lines. The acft entered a high descent rate and…Jan 6, 1985 · N3362M · Substantial damageNTSB LAX85LA098Accident · No injuriesLimited investigationFinal reportCrowder Great Lakes · Sunland, CAWhile cruising at 2100 ft AGL, the engine began to vibrate and a ttl loss of pwr occurred. Plt made forced landing into the top of a tree. Inspection revealed that the 4 hold down bolts/studs which hold the #2 cylinder to the case had failed allowing the…Jan 6, 1985 · N13355 · Substantial damageNTSB DEN85LA060Accident · Minor injuriesLimited investigationFinal reportBeech B36TC · Billings, MTPlt used cannula connected to portable oxygen system during climb starting at 11,000 ft MSL. At FL 170 plt switched to a mask connected to acft oxygen ststem. At FL 250, plt complained of stomach pains for aprx 1/2 hr. Plt then stated to his son that his…Jan 5, 1985 · N6750C · Substantial damageNTSB MKC85IA045Incident · No injuriesIncident investigationFinal reportSwearingen SA226TC · St. Louis, MOAfter departing st Louis and reaching cruise flt the crew experienced a continual trim pitch-up which had to be relieved by a reduced airspeed. No aural indication was noted by the crew. The return to the airport was uneventful. Follow-up inspection of the…Jan 4, 1985 · N322BA · No damageNTSB DEN85LA059Accident · Minor injuriesLimited investigationFinal reportPiper PA-18-150 · Rawlins, WYThe acft lost eng pwr and was substantially damaged during an off arpt energency landing. The purpose of the flt was to look for coyotes. The post accident eng exam revealed that 9 consecutive teeth on the left magneto drive gear were ground off. This allowed…Jan 4, 1985 · N3575Z · Substantial damageNTSB MKC85LA043Accident · No injuriesLimited investigationFinal reportCessna 182P · Ellisonore, MOPlt obtained wx briefing for route from moline, IL, st. louis, MO, memphis, TX, to new orleans, LA. Plt was informed vfrwas not recommended in eastern Iowa but st. louis was VFR and forecast to be 1000 to 2000 ft broken to scattered all morning. VFR was also…Jan 3, 1985 · N20828 · Substantial damageNTSB LAX85LA092Accident · No injuriesLimited investigationFinal reportBell 2061-1 · Santa Barbara, CADuring takeoff & departure, the helicopter climbed to about 150 ft AGL & started to proceed over water. As it crossed over the shoreline near the end of the rwy, the eng flamed out. The plt turned about 120 deg back toward a Beech area & made an autorotative…Jan 3, 1985 · N2246Q · Substantial damageNTSB DEN85LA056Accident · No injuriesLimited investigationFinal reportPiper PA-28-181 · Yoder, COEngine quit during cruise flight. Pilot made forced landing on dirt road during which the acft veered off the road and collided with a fence post. Fire department officials reported no evidence of fuel either in the fuel tanks or around the acft.Jan 3, 1985 · N2112K · Substantial damageNTSB DEN85LA058Accident · Minor injuriesLimited investigationFinal reportCessna 210B · Lordsburg, NMPlt stated that during the flt the rt fuel tank was used until empty at which time the left tank was selected. Aprx 20 minutes after switching tanks and 2 hrs 35 minutes after departure, the engine backfired and subsequently quit. A forced landing was made…Jan 2, 1985 · N101PQ · Substantial damageNTSB DEN85FA055Accident · 2 fatalField investigationFinal reportCessna 310N · Edgewood, NMThe pvt rated pilot did not hold a multiengine or instrument rating. The pilot and passenger were returning from vacation. A witness near the accident site stated that she saw the aircraft descend out of a low over last at a very steep nose down angle. The…Jan 1, 1985 · N5069Q · DestroyedNTSB ATL85LA075Accident · No injuriesLimited investigationFinal reportCessna 150J · Dublin, NCThe pilot reported that the acft lost power in cruise flight and he attempted to land in an open field. He aborted the approach because of a tailwind and flew along a river for aprx 1 mile before ditching in the water. The acft sank in the river and the plt…Jan 1, 1985 · N50913 · Substantial damageNTSB ATL85LA074Accident · Serious injuriesLimited investigationFinal reportMooney M20J · Birmingham, ALThe pilot reported after takeoff from rwy 23 at 400 ft AGL a horn sounded. A student plt passenger stated the marker beacon, and stall warning horn came on. The plt however could not identify the horn. The plt lowered the nose of the acft, began a descent and…Dec 31, 1984 · N201FR · Substantial damageNTSB DEN85LA052Accident · No injuriesLimited investigationFinal reportCessna 172 · Ft. Collins, COThe plt reported that upon arrival at fort Collins, and while at cruise altitude, the eng suddenly lost power. During the emergency descent maneuvering he lost sight of the airport and landed in a plowed field. Post crash examination of eng revealed the…Dec 30, 1984 · N9033H · Substantial damageNTSB ATL85LA073Accident · No injuriesLimited investigationFinal reportPiper PA-30 · Sparta, TNDual engine stoppage. Fuel tanks topped before takeoff. Plt had filed IFR en route but the wind had shifted to a 30 kt headwind. Plt became concerned about fuel remaining and made an instrument apch which was missed because of low clouds. During course to an…Dec 30, 1984 · N7589Y · Substantial damageNTSB ATL85FA070Accident · 1 fatalField investigationFinal reportRobinson R22 · Moundsville, WVThe helicopter crashed aprx 1/2 mi from the marshall county arpt while on a personal flt. Investigaton revealed that the plt, a doctor who specialized in emergency room procedures, commuted between hospitals located in three different cities. The plt had been…Dec 30, 1984 · N9030B · DestroyedNTSB MIA85LA070Accident · No injuriesLimited investigationFinal reportPiper PA-31 · Atlantic Ocean (Atlantic Ocean)About 5 hrs & 10 mins after departure, both engs failed due to fuel exhaustion at 11,000 ft aprx 40 miles from haiti. According to the plt, the acft was using more fuel than normal and the destn was changed accordingly. A short time after initiating the…Dec 29, 1984 · N801BR · DestroyedNTSB MIA85IA069Incident · No injuriesIncident investigationFinal reportCessna 402B · Sanford, FLDuring cruise flt, the acft suddenly nosed down & began vibrating. Remedial action was taken & an uneventful emerg landing was made. An exam revealed that the bolt, nut & cotter pin (used to attach the elevator trim control rod to the elevator trim tab) were…Dec 29, 1984 · N402PB · Minor damageNTSB LAX85FA093Accident · 5 fatalField investigationFinal reportCessna 182P · Big Bear City, CAThe acft crashed in a mountainous area while on a VFR personal flt to long beach, CA. The non-instrument rated private plt & 4 minor children aboard the acft were killed. By low clouds & there were extensive snow showers in the arearea the plt's log book…Dec 28, 1984 · N5948J · DestroyedNTSB MIA85MA064Accident · 6 fatalMajor investigationFinal reportPiper PA-32R-301 · Bradley, FLThe plt completed a 30 min insurance check flt, then loaded the acft with baggage/pax & departed decauter, IL on a flt to naples, FL. A refueling stop was made at columbus, GA. At 1750 the acft departed columbus & cruised uneventfully until sometime after…Dec 27, 1984 · N8227J · DestroyedNTSB MIA85FA066Accident · 2 fatalField investigationFinal reportPiper PA-32R-300 · Homestead, FLWhile cruising northerly at a low altitude during a dark night, the acft struck a row of trees appx 50 ft tall about 8 ft from the tops, it then hit a large tree at about 6 ft AGL, 670 ft from the initial impact point, & came to rest in a dirt road. An exam…Dec 27, 1984 · N8920C · DestroyedNTSB MIA85FA065Accident · 1 fatalField investigationFinal reportFairchild Hiller FH-1100 · La Belle, FLThe helicopter was observed flying at a low alt & lost all eng power, banked sharpley to the left, lost complete control & dove into the ground. The acft was destroyed by impact forces along with the post crash fire. No evidence to suggest a malfunction of…Dec 27, 1984 · N8126H · DestroyedNTSB CHI85LA079Accident · No injuriesLimited investigationFinal reportPiper PA-23-250 · New Philadelphi, OHPlt felt vibration and reduced power on both engines to idle. Plt heard a 'thud' and discovered the left propeller had separated cutting through the nose of the acft as it departed. The propeller was not located. Two of the six propeller bolts remained with…Dec 27, 1984 · N6505Y · Substantial damageNTSB ATL85FA068Accident · 1 fatalField investigationFinal reportGyrocopter B-8M · Madisonville, TNStudent pilot attempting flight in Gyrocopter loss control cusing main rotor system to contact the rudder system. Pilot was not qualified to conduct this flight. A/c was not assigned an identification number.Dec 27, 1984 · UNREG · DestroyedNTSB LAX85FA086Accident · 1 fatalField investigationFinal reportCessna 172N · Livermore, CAThe non-instrument rated pilot departed the arpt on a special VFR clearance. Wx at the time was 1,000 overcast, 2.5 miles in light rain and fog. Acft turned eastbound following a highway toward a pass in the hills to the east and collided with the rising…Dec 26, 1984 · N5184D · DestroyedNTSB FTW85FA088Accident · 4 fatalField investigationFinal reportMooney M20J · San Antonio, TXThe non-instrument rated plt obtained a wx briefing & filed an IFR flt plan although poor wx conditions existed (200 ft ceiling & one-half mi visibility) at San Antonio. The tower instructions to N5681K were to fly rwy heading (120 deg) after departure,…Dec 26, 1984 · N5681K · DestroyedNTSB CHI85LA078Accident · No injuriesLimited investigationFinal reportPiper PA-24-260 · Ypsilanti, MIThe acft collided with a fence & two parked cars during a forced landing while on a personal flt. The plt reported that after a 40 to 50 min ground delay he made a normal climb to 5000 ft MSL where he trimmed the acft & leaned the mixture to 75 percent power.…Dec 26, 1984 · N8921P · Substantial damageNTSB LAX85LA085Accident · Serious injuriesLimited investigationFinal reportCessna 170A · Cottonwood, AZWitnesses reported that the acft was in level flight at treetop altitude along a river and that the engine was operatingnormally until the acft struck & severed three power lines before impacting the riverbank about 200 ft west of the wiresDec 25, 1984 · N9164A · Substantial damage