NTSB investigations
14,038 cases where the phase of flight was Takeoff.
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 = 300)
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.
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 = 300)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun 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 MKC83FU007Accident · Serious injuriesFinal reportAirmass Sunburst · Goddard, KSThe plt landed in a vacant field, aprx 1500 ft long, surrounded by a row of trees. Before initiating a takeoff, he made a ground reconnaissance of the area. The field was covered with grass aprx 6 to 9 inches tall & was oriented on a north-south direction.…NTSB NYC83LA240Accident · No injuriesLimited investigationFinal reportBeech 58P · Lebanon, NHAccording to the plt there was a sudden power fluctuation at(rotation speed). The plt then aborted the takeoff but couldnot stop the acft before departing the rwy.NTSB DEN83LA211Accident · Minor injuriesLimited investigationFinal reportPiper PA-18 · Breckenridge, COAfter landing on a private arpt that was closed to public use, the plt was prohibited from using it to takeoff again. He received permission from the owner of a gravel plt to use his 'haul road' which was located next to the arpt. The elevation of the road…NTSB ATL83LA362Accident · No injuriesLimited investigationFinal reportBeech 58 · Chamblee, GAThe acft ran off the departure end of the rwy after an aborted takeoff due to a cabin door opening. The CFI said that more than half the rwy remained when the throttles were retarded and the right door popped open at 91 mph. One attempt was made to close the…NTSB MKC83LA218Accident · No injuriesLimited investigationFinal reportCessna 188B · Catron, MOThe acft went out of control during the takeoff roll from a farm field. The plt states that as the roll began the left wing started to drop and the acft began turning left. The plt tried to correct with right brake but was unable to make a correction. The…NTSB LAX83LA428Accident · No injuriesLimited investigationFinal reportCessna 172N · Novato, CAThe plt stated that he attempted to takeoff in strong x-wind conditions. During the takeoff roll, the acft veered off the right side of the rwy. After unsuccessfully trying to get back onto the rwy, the plt aborted the takeoff. However, the acft continued…NTSB SEA83LA200Accident · No injuriesLimited investigationFinal reportMaule M-4 · Monroe, WAThe plt reported that he was practicing touch-and-go landings with a friend that was a certified flt instructor (CFI). After a landing, the friend indicated his desire to fly the acft. The plt offered to let his friend fly it from the left seat. The friend…NTSB CHI83LA404Accident · Serious injuriesLimited investigationFinal reportMockrud Volksplane · Cottage Grove, WIThe owner of the new home built acft had given the plt permission to taxi the plane, but not to takeoff. The plt stated that he inadvertently became airborne while making a high speed taxi check, then the eng lost power. A witness stated that the acft became…NTSB DEN83LU004Accident · Serious injuriesFinal reportStarflight Starfire · Grand Junction, COAccording to the pilot, he was trying to get the feel of the vehicle and was taking it about 1 foot off the ground before setting it back down. On the final takeoff, the wind lifted the acft up to about 15-20 feet and it stalled. As the pilot was attempting…NTSB FTW83LA403Accident · No injuriesLimited investigationFinal reportCessna 140 · Hitchcock, TXThe acft nosed over during takeoff. The flt said that the rwy was 50 ft wide but had been mowed only to a width of 20 ftthe plt allowed the acft to drift into the high grass alongside the rwy. The acft continued off the rwy and nosed over in tail grass.…NTSB ATL83LA343Accident · No injuriesLimited investigationFinal reportSmith, Ted Aerostar 600-A · Florala, ALThe pilot stated that during takeoff roll he experienced a power surge but the engine did not quit. He aborted the takeoff by reducing power on both engines and applying brakes. This resulted in the aircraft swerving off the right side of the runway, rolling…NTSB SEA83LA184Accident · No injuriesLimited investigationFinal reportCessna 180 · Colburn, IDThe acft collided with a fence and a ditch during an overrun while landing. The pilot reported he took off with the pitot tube cover on and had flown 7 miles to a private airstrip. The strip was reported to be about 1300 ft long. The pilot stated he landed…NTSB LAX83LA418Accident · No injuriesLimited investigationFinal reportCessna 172P · Glendale, AZThe student & his instructor plt had made 2 takeoffs & landings, then the instructor deplaned & the student prepared to takeoff on a solo flt. According to the student, he made the pretakeoff checks, which included setting the trim. As the acft accelerated…NTSB CHI83LA400Accident · No injuriesLimited investigationFinal reportPiper PA-28-181 · Blair, WIThe acft collided with a fence during an aborted takeoff. The student was on a solo training flt when the accident occurred. This was the first takeoff of the flt. The field was soft and the pilot decided to abort the takeoff during the ground roll. He was…NTSB CHI83LA396Accident · No injuriesLimited investigationFinal reportCessna 172 · Princeton, ILThe turf rwy was wet from recent rains. The plt stated that during takeoff, the acft had accelerated to near the rotation speed when it was slowed by a soft spot in the rwy near mid field. At the same point, an upslope portion of the rwy was encountered & the…NTSB SEA83LA194Accident · No injuriesLimited investigationFinal reportEnstrom 280C · N. Hailey, IDThe plt reported that during takeoff from a county road (elevation 5500 ft), he allowed the RPM to drop 'below green.' Reportedly, he had a choice of either setting the helicopter down on the road or flying down a slope to gain airspeed. He elected to land on…NTSB NYC83LA227Accident · No injuriesLimited investigationFinal reportCessna 152 · Brockport, NYThe CFI and student plt had conducted about 4 touch & go landings prior to the CFI authorizing a first solo takeoff. According to the CFI, at about 1/3 of the way down the runway, the acft drifted to the left onto the grass and continued until contact with a…NTSB CHI83FU010Accident · 1 fatalFinal reportTeratorn Tierra · Pepin, WIThe plt had recently purchased & assembled the ultralight vehicle. The person who sold him the ultralight said that he saw the vehicle on the night before. According to him, it 'looked like he had it together all right.' He said it was his impression the plt…NTSB LAX83LA407Accident · Minor injuriesLimited investigationFinal reportGrumman G-164B · Poston, AZDuring takeoff from the unlighted strip the acft went off the right side. The right main landing gear went into the softsandy shoulder & the acft flipped over.NTSB MIA83LA211Accident · No injuriesLimited investigationFinal reportCessna 188 · Jay, FLThe plt reported that he tried to take off on a hot day with a heavy lord, but the acft would not perform sufficiently to climb over a drainage terrace at the departure end of the rwy. The acft bumped the drainage terrace & continued flying, but would not…NTSB FTW83LA391Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Lissie, TXThe acft ran into a ditch during takeoff and collapsed the landing gear. The plt said he was steering around some mud holes when the wing became entangled in high grass alongside the rwy. The acft groundlooped off the rwy into a ditch. The wings and landing…NTSB MIA83FA208Accident · Serious injuriesField investigationFinal reportCondor II · Perrine, FLThe plt was on a flt to test a new liquid cooled eng & its radiator size & location. On previous flts, he had noted inadequate cooling. Company personnel had moved the radiator to improved its efficiency. On the previous flt, the plt noted that the temp gage…NTSB LAX83LA404Accident · No injuriesLimited investigationFinal reportCessna P21O · Goldfield, NVThe acft collided with a cattle guard during an attempted takeoff from a road. The plt elected the road rather than the airstrip which was made of gravel and was wet and muddy. He stated that there was about 4000 ft of flat straight road available and he set…NTSB ATL83LA329Accident · No injuriesLimited investigationFinal reportCessna A 152 · Lynchburg, VAThe acft ran off the rwy and collided with a ditch during takeoff. The student pilot was practicing touch and go landings. During one running takeoff after full power was applied the plt noticed that full flaps were still extended. While retracting the flaps…NTSB ANC83LA149Accident · Serious injuriesLimited investigationFinal reportCessna T-207A · Atmautluak, AKThe plt stated that during the takeoff roll, his seat slid backwards & he was unable to reach the controls. Subsequently, the acft veered to the right, departed the rwy & went into a shallow pond. The plt reported that the seat latch malfunctioned & was…NTSB MKC83LA195Accident · No injuriesLimited investigationFinal reportCessna 150L · S. Sioux City, NEThe plt reported that during a touch-and-go landing on rwy 14 with a southerly wind at 8 KTS, he touched down about 1/4 of the way down the rwy with 20 deg of flaps. The temp was 93 deg & the density altitude was aprx 3800 ft. the plt did not raise the flaps…NTSB LAX83FA390Accident · 2 fatalField investigationFinal reportPiper PA-28-181 · Santa Rosa, CAThe non-instrument rated plt & a passenger took off from the arpt at dawn before the control tower was in operation. The takeoff was at 0549 PDT in IMC conditions. Shortly after taking off, the acft crashed. One witness stated that he heard the acft takeoff…NTSB CHI83LA385Accident · No injuriesLimited investigationFinal reportCessna 150 · Savanna, ILThe plt reported the winds were from 160 deg at 7 KTS & that he back taxied on rwy 14 to takeoff. He reported that during the takeoff roll, he encountered a right x-wind, & when he was aprx 2/3 of the way down the rwy, the acft veered to the left. After…NTSB FTW83LA382Accident · No injuriesLimited investigationFinal reportGrumman G-164C · Newport, ARThe acft caught fire during takeoff roll and continued to burn after the aborted takeoff. Prior to this flt the operatorhad experienced difficulty with the carburator on this engine. On this flt the acft was being ferried for carburetor maintenance. During…NTSB CHI83LA384Accident · No injuriesLimited investigationFinal reportPiper PA-38-112 · Blue Island, ILAcft ran off side of rwy & the left wing collided with corn stalks causing the acft to spin 180 deg.NTSB ANC83LA147Accident · No injuriesLimited investigationFinal reportPiper PA-18-150 · Eagle, AKThe pilot stated that he felt the engine did not develop full power during takeoff, possibly due to formation of carburetor ice during rain showers. Instead of aborting, he continued and the acft struck trees on the departure.NTSB LAX83LA380Accident · Minor injuriesLimited investigationFinal reportCessna 172P · Jean, NVThe plt took off from the mccarran intl arpt, las vegas, NV & flew to another arpt in the local area at Jean, NV to practice soft field takeoff & landing techniques. During his 1st soft field takeoff, he over rotated the acft & the tail cone contacted the…NTSB CHI83LA376Accident · No injuriesLimited investigationFinal reportBeech S35 · Austin, MNThe plt started to takeoff on rwy 35 with a wind from 300 deg at 19, gusting 25 KTS. During the takeoff roll, the right door popped open & the acft veered to the left. Reportedly, the plt intended to continue the takeoff (to circle, land & fix the door).…NTSB LAX83LA379Accident · No injuriesLimited investigationFinal reportAlon A2 · Afton, CADuring an aerial observation mission, the passenger became ill, so the plt elected to land on a hard-packed strip across a plowed field. After landing, he walked over the area. Except for a rut at about midfield, he perceived there would be no problem in…NTSB MKC83LA183Accident · No injuriesLimited investigationFinal reportBeech M35 · Sioux City, IAThe plt stated that the landing gear switch was down when he started tha takeoff roll. When the acft had accelerated to aprx 50 mph during the takeoff roll, the landing gear retracted/collapsed, nose wheel first, followed by the main gear. The plt stated that…NTSB MKC83LA182Accident · No injuriesLimited investigationFinal reportCessna 152 · Benton, KSThe acft collided with a ditch during an aborted takeoff. The pilot said the takeoff was on rwy 34 which is 2600 ft longthe density alt was 4000 ft. the acft accelerated to 60 KTS but still was not lifting off. As the acft approached the departure end of the…NTSB DEN83LA186Accident · No injuriesLimited investigationFinal reportCessna 180 · Cheyenne, WYThe acft groundlooped during takeoff. The plt stated that he incorrectly assumed a 14 kt headwind when the tower gave the 'winds light at fourteen' after previously assigning rwy light. After applying power he realized that he had a x-wind and cut the power.…NTSB NYC83FA204Accident · 2 fatalField investigationFinal reportBeech S35 · Wiscasset, METhe acft was observed taking off on a foggy night with a low overcast sky condition. Shortly after taking off, the plane was observed to turn at low alt, then enter a nose down attitude. The acft crashed & the non-instrument rated plt & passenger were fatally…NTSB FTW83LA367Accident · Minor injuriesLimited investigationFinal reportCessna 140 · Alamagordo, NMAfter topping the acft with fuel, the plt took of from the 4200 ft high rwy, toward the mountains. The density alt at that time was about 6700 ft. during the takeoff, the plt rotated at 50 mph, then accelerated in ground effect to 70 mph. He then started to…NTSB NYC83FU008Accident · 1 fatalFinal reportGoldwing None · Broadalbin, NYThe owner/builder/plt had recently constructed the home built ultralight vehicle. According to friends, he most likely had never ridden in an airplane & he believed it was possible to build & fly the ultralight with no instruction. According to the owner of a…NTSB CHI83LA364Accident · Minor injuriesLimited investigationFinal reportCessna 177RG · Lansing, ILThe acft had just been given an annual inspection & the plt was on the 1st flt back to the home arpt. He reported that before takeoff, he noted that the eng would not idle below 850 RPM. He elected to continue with the flt. During the takeoff roll, he pulled…NTSB DEN84LA185Accident · No injuriesLimited investigationFinal reportPiper 601P · Billings, MTBefore starting the flt, the acft was loaded with full fuel, 5 adult passengers & aprx 45 lbs of baggage. The elevation & temp at the arpt were 3606 ft & 93 deg. The plt said he did not calculate the weight & balance or density altitude limits for this flt…NTSB DEN83LA182Accident · No injuriesLimited investigationFinal reportHelio Courier H-295 · Salt Lake City, UTBefore starting his takeoff, the plt waited for other acft in the pattern to make touch-and-go landings. Immediately before & during his attempted takeoff, the plt saw 2 national guard helicopters hovering over a sod area, west of rwy 34. Reportedly, the 1st…NTSB CHI83FER01Accident · No injuriesFinal reportGoodyear FG1D · Crystal, MNThe plt reported that during the takeoff roll, there was a slight loss of manifold pressure. This was followed by a loud 'misfire', a futher loss of manifold pressure & a drop in the eng RPM. With an estimated 2000 ft of rwy remaining, he elect to abort &…NTSB MKC83LA170Accident · No injuriesLimited investigationFinal reportMonke Rotec Rally 3 · Nickerson, NEThe acft was a registered, home built, 2 place, ultralight vehicle. The passenger was the plt's friend who was building his own ultralight & wanted to ride along to get a general feeling of how to land this type of acft. The plt reported that the temp was 86…NTSB MKC83FA171Accident · Serious injuriesField investigationFinal reportAeronca 11CC · Orange City, IAThe aircraft had completed a landing in a field and the pilot was attempting a takeoff from the stopping point. The aircraft did not become airborne and ran for aprx 100 feet across a boggy swamp and impacted a four foot high dirt bank.NTSB FTW83LA355Accident · No injuriesLimited investigationFinal reportPiper PA-28-161 · Cashion, OKThe plt was told that the sod strip was 1800 ft long. His calculated takeoff distance to clear a 50 ft obstacle was 1720 ft. however, the actual length of the sod strip ws 1300 ft. during the takeoff roll, the plt realized he would not be able to clear the 30…NTSB LAX83LA363Accident · Minor injuriesLimited investigationFinal reportCessna 206 · Clifton, AZThe acft collided with soft terrain and nosed over during an attempted takeoff. Custom officials said the acft was being tracked on radar. The plt of the accident acft saw the customs acft after he landed and attempted to takeoff, lost control and nosed over…NTSB LAX83LA324Accident · Minor injuriesLimited investigationFinal reportBoeing IB75A · Tracy, CAAccording to the operator, the pilot lost directional control about 1200 ft down the rwy, lifted off prematurely and was unable to clear trees in an almond orchard at the end ofthe rwy. Initial impact occurred 120 ft north of the rwy centerline.NTSB CHI83LA331Accident · No injuriesLimited investigationFinal reportPiper PA-28-140 · Charlotte, MIDuring the takeoff portion of a night touch-and-go, the acft collided with a deer that ran into the acft.