# NTSB investigations, IA: Maneuvering

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 1 of 6 · 284 cases

## Latest cases

- [NTSB CEN26LA274](https://openairdocs.org/ntsb/CEN26LA274.md): Cessna A188B · Algona, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 29, 2026 · N731CQ · Substantial damage
  > The pilot’s failure to maintain control during a turn, which resulted in an aerodynamic stall.
- [NTSB CEN26LA259](https://openairdocs.org/ntsb/CEN26LA259.md): Robinson Helicopter R44 · Adair, IA · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 18, 2026 · N484AT · Substantial damage
  > On July 18, 2026, about 1440 central daylight time, a Robinson Helicopter Company R44, N484AT, was substantially damaged when it was involved in an accident near Adair, Iowa. The pilot was not injured. The helicopter was operated as a Title 14 Code of Federal…
- [NTSB CEN26LA256](https://openairdocs.org/ntsb/CEN26LA256.md): Robinson Helicopter R44 II · Coralville, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 16, 2026 · N322TC · Substantial damage
  > The pilot’s failure to maintain clearance from a power line during a low-level aerial application flight.
- [NTSB CEN25LA297](https://openairdocs.org/ntsb/CEN25LA297.md): Ayres S2R · Akron, IA · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Jul 28, 2025 · N524SL · Substantial damage
  > On July 28, 2025, about 1537 central daylight time, an Ayres Corporation S2R-T34 airplane, N524SL, sustained substantial damage when it was involved in an accident near Akron, Iowa. The pilot sustained serious injuries. The airplane was operated as a Title 14…
- [NTSB CEN25LA285](https://openairdocs.org/ntsb/CEN25LA285.md): Air Tractor AT-802A · Walcott, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 23, 2025 · N802BF · Substantial damage
  > The pilot’s failure to maintain clearance from the crops during an aerial application flight.
- [NTSB CEN25LA277](https://openairdocs.org/ntsb/CEN25LA277.md): Robinson Helicopter R66 · Maynard, IA · Accident · No injuries · Class 3 · Limited · Preliminary report · Jul 22, 2025 · N88911 · Substantial damage
  > On July 22, 2025, about 1400 central daylight time, a Robinson Helicopter Company R66 helicopter, N88911, was substantially damaged when it was involved in an accident near Maynard, Iowa. The pilot was uninjured. The helicopter was operated under Title 14…
- [NTSB CEN24FA287](https://openairdocs.org/ntsb/CEN24FA287.md): Bell 206 · Nashua, IA · Accident · 1 fatal · Class 3 · Field · Preliminary report · Jul 29, 2024 · N94XA · Substantial damage
  > On July 29, 2024 about 1330 central standard time, a Bell 206-B3 Helicopter, N94XA, was destroyed when it was involved in an accident near Nashua, Iowa. The pilot was fatally injured. The helicopter was operated as a Title 14 Code of Federal Regulations Part…
- [NTSB CEN23LA342](https://openairdocs.org/ntsb/CEN23LA342.md): Bell 206B · Denison, IA · Accident · 1 fatal · Class 4 · Limited · Final report · Jul 30, 2023 · N231RL · Substantial damage
  > The pilot’s inflight distraction, which resulted in his failure to see and avoid wires.
- [NTSB CEN23LA336](https://openairdocs.org/ntsb/CEN23LA336.md): Air Tractor AT-402B · Alta, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 29, 2023 · N402PR · Substantial damage
  > The airplane’s encounter with a dust devil, which resulted in a loss of lift, and subsequent collision with powerlines.
- [NTSB CEN23LA328](https://openairdocs.org/ntsb/CEN23LA328.md): Robinson Helicopter R44 · Hanlontown, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 26, 2023 · N467HA · Substantial damage
  > The pilot’s failure to maintain clearance from a cable during spray operations.
- [NTSB CEN23LA009](https://openairdocs.org/ntsb/CEN23LA009.md): Yates Mike E Roaring Eagle · Stanwood, IA · Accident · Minor injuries · Class 4 · Limited · Final report · Oct 9, 2022 · N181MY · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack in the traffic pattern, which resulted in an aerodynamic stall and loss of airplane control at too low of an altitude to recover. Contributing to the accident was the partial loss of engine…
- [NTSB CEN22LA366](https://openairdocs.org/ntsb/CEN22LA366.md): Robinson Helicopter R44 II · Maynard, IA · Accident · No injuries · Class 4 · Limited · Final report · Aug 5, 2022 · N619RB · Substantial damage
  > An impact with a powerline as a result of an unexpected wind gust.
- [NTSB CEN22LA354](https://openairdocs.org/ntsb/CEN22LA354.md): Air Tractor AT-301 · Lamoni, IA · Accident · No injuries · Class 3 · Limited · Final report · Aug 1, 2022 · N4326S · Destroyed
  > A loss of airplane performance for reasons that could not be determined.
- [NTSB CEN22LA351](https://openairdocs.org/ntsb/CEN22LA351.md): Bell Helicopter Textron 206B · Arcadia, IA · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 1, 2022 · N169AA · Substantial damage
  > Maintenance personnel’s failure to properly torque a fuel control unit B-nut, which resulted in a loss of engine power at low altitude and an impact with terrain.
- [NTSB CEN22LA356](https://openairdocs.org/ntsb/CEN22LA356.md): Arbc Inc DBA Lindstrand 150A · Indianola, IA · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 30, 2022 · N316EB · Minor damage
  > The pilot’s failure to maintain clearance from power lines during low-level maneuvering.
- [NTSB CEN22FA347](https://openairdocs.org/ntsb/CEN22FA347.md): Air Tractor AT502 · Ute, IA · Accident · 1 fatal · Class 3 · Field · Final report · Jul 30, 2022 · N501MW · Destroyed
  > The pilot’s inflight collision with a power line during aerial application.
- [NTSB CEN22LA371](https://openairdocs.org/ntsb/CEN22LA371.md): Ayres S2R-T65 · Wyman / Washington, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 21, 2022 · N9899 · Substantial damage
  > The pilot not maintaining sufficient altitude to clear an obstruction during the aerial application flight.
- [NTSB CEN22LA146](https://openairdocs.org/ntsb/CEN22LA146.md): Hughes 369 · Adair, IA · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 17, 2022 · N500MZ · Substantial damage
  > The mechanic’s failure to properly torque a fuel control unit B-nut, which resulted in a partial loss of engine power, an attempted autorotation, and an impact with terrain.
- [NTSB CEN21LA350](https://openairdocs.org/ntsb/CEN21LA350.md): Robinson Helicopter R44 · Waukon, IA · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 4, 2021 · N775AK · Substantial damage
  > The pilot’s failure to maintain adequate clearance from a powerline during an agricultural application pass.
- [NTSB CEN21LA339](https://openairdocs.org/ntsb/CEN21LA339.md): Robinson Helicopter R44 II · West Liberty, IA · Accident · Minor injuries · Class 4 · Limited · Final report · Jul 20, 2021 · N983HA · Substantial damage
  > The pilot’s failure to see and avoid a wire while maneuvering at low altitude during an aerial application flight, resulting in a collision with the wire.
- [NTSB CEN21LA319](https://openairdocs.org/ntsb/CEN21LA319.md): Air Tractor AT-401 · Carroll, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2021 · N7315P · Substantial damage
  > The wear-related failure of the airframe fuel boost pump, which resulted in fuel starvation and a loss of engine power.
- [NTSB CEN21LA313](https://openairdocs.org/ntsb/CEN21LA313.md): Air Tractor AT802 · Newell, IA · Accident · No injuries · Class 4 · Limited · Final report · Jul 11, 2021 · N949TM · Substantial damage
  > The pilot’s failure to maintain adequate clearance from crops during an agricultural flight.
- [NTSB CEN20LA330](https://openairdocs.org/ntsb/CEN20LA330.md): Robinson R44 · Logan, IA · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 8, 2020 · N89LA · Substantial damage
  > The failure of the lower actuator bearing support brackets, which resulted in the misalignment of the clutch actuator, a loss of belt tension on the main rotor drive system, and a subsequent forced landing.
- [NTSB CEN20LA294](https://openairdocs.org/ntsb/CEN20LA294.md): Rockwell S2R · Harlan, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 20, 2020 · N1662S · Substantial damage
  > The fatigue fracture of the upper rudder hinge that resulted in a partial separation of the rudder from the airplane during a spray pass.
- [NTSB CEN20LA136](https://openairdocs.org/ntsb/CEN20LA136.md): Robinson Helicopter R44 II · Audubon, IA · Accident · 2 fatal · Class 3 · Limited · Final report · Mar 31, 2020 · N107EH · Destroyed
  > The pilot’s failure to recognize and avoid the power line during the low-altitude flight. Contributing to the accident was the pilot’s fatigue, which affected the pilot’s ability to see and avoid the power line.
- [NTSB CEN19FA259](https://openairdocs.org/ntsb/CEN19FA259.md): Air Tractor AT502 · Sumner, IA · Accident · 1 fatal · Class 3 · Field · Final report · Aug 8, 2019 · N6113C · Destroyed
  > The pilot’s impairment by medical conditions and/or medications, which resulted in the airplane’s impact with power lines and terrain.
- [NTSB CEN19LA230](https://openairdocs.org/ntsb/CEN19LA230.md): Robinson R44 · Ida Grove, IA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 21, 2019 · N459TA · Substantial damage
  > A total loss of engine power during an aerial application flight for undetermined reasons.
- [NTSB GAA19CA173](https://openairdocs.org/ntsb/GAA19CA173.md): Pereira Osprey · Independence, IA · Accident · Minor injuries · Data collection · Final report · Mar 15, 2019 · N822GC · Substantial damage
  > The pilot's improper fuel planning, which resulted in fuel exhaustion and a total loss of engine power.
- [NTSB GAA18CA453](https://openairdocs.org/ntsb/GAA18CA453.md): Robinson R44 · Elma, IA · Accident · Minor injuries · Data collection · Final report · Jul 27, 2018 · N466EL · Substantial damage
  > The pilot's failure maintain clearance from power lines during an agricultural application flight.
- [NTSB CEN18FA060](https://openairdocs.org/ntsb/CEN18FA060.md): X-Air XA85 · Oskaloosa, IA · Accident · 1 fatal · Field investigation · Final report · Dec 23, 2017 · N20XA · Substantial damage
  > The pilot's low altitude flight into a power line due to his impairment from an acute physiologic event during the flight. Contributing to the pilot's impairment was his use of two sedating medications.
- [NTSB CEN18LA025](https://openairdocs.org/ntsb/CEN18LA025.md): Robinson Helicopter R44 · Larchwood, IA · Accident · Serious injuries · Limited investigation · Final report · Nov 6, 2017 · N7085M · Substantial damage
  > The pilot's loss of situational awareness, which resulted in his failure to maintain adequate clearance from powerlines.
- [NTSB GAA17CA436](https://openairdocs.org/ntsb/GAA17CA436.md): Bell 47G 3B · Toterville, IA · Accident · No injuries · Data collection · Final report · Jul 24, 2017 · N47AH · Substantial damage
  > The pilot’s failure to maintain rotor rpm while maneuvering at low altitude with low airspeed and a tailwind.
- [NTSB CEN17CA346](https://openairdocs.org/ntsb/CEN17CA346.md): Robinson Helicopter R44 II · Logan, IA · Accident · Minor injuries · Data collection · Final report · Jul 20, 2017 · N192E · Substantial damage
  > The pilot’s failure to maintain clearance from a wire during an agricultural application flight.
- [NTSB CEN17FA147](https://openairdocs.org/ntsb/CEN17FA147.md): Piper PA-28-180 · Oxford, IA · Accident · 2 fatal · Field investigation · Final report · Apr 7, 2017 · N9179J · Destroyed
  > The failure of the pilot receiving instruction to recover from the practice stall before the airplane entered a spin and the flight instructor's inadequate monitoring of the pilot receiving instruction and delayed remedial action to recover the airplane.
- [NTSB CEN16LA292](https://openairdocs.org/ntsb/CEN16LA292.md): Air Tractor AT 402 · Sac City, IA · Accident · 1 fatal · Limited investigation · Final report · Jul 29, 2016 · N1016G · Destroyed
  > The pilot's failure to maintain adequate clearance from power lines. Contributing to the accident was the pilot's failure to circle over the field to identify hazards before beginning the aerial application.
- [NTSB GAA16CA393](https://openairdocs.org/ntsb/GAA16CA393.md): Cessna 188 · What Cheer, IA · Accident · No injuries · Data collection · Final report · Jul 25, 2016 · N9979G · Substantial damage
  > The loss of engine power for undetermined reasons due to the pilot not making the airplane or engine available for examination, which resulted in a forced landing and an impact with terrain.
- [NTSB CEN16LA289](https://openairdocs.org/ntsb/CEN16LA289.md): Bell OH 58A · Lake Mills, IA · Accident · Minor injuries · Limited investigation · Final report · Jul 22, 2016 · N288NS · Substantial damage
  > The pilot's inadequate visual lookout, which resulted in a wire strike.
- [NTSB CEN15LA412](https://openairdocs.org/ntsb/CEN15LA412.md): Guisinger Gary G Baby Belle · Stuart, IA · Accident · Minor injuries · Limited investigation · Final report · Sep 12, 2015 · N135PA · Substantial damage
  > The failure of the tail rotor driveshaft for reasons that could not be determined due to the mechanically and thermally deformed fracture surface.
- [NTSB CEN15LA370](https://openairdocs.org/ntsb/CEN15LA370.md): Bell 206B · Cresco, IA · Accident · No injuries · Limited investigation · Final report · Aug 18, 2015 · N5743W · Substantial damage
  > The loss of engine power due to the high-cycle fatigue failure of the third-stage turbine wheel.
- [NTSB CEN15LA377](https://openairdocs.org/ntsb/CEN15LA377.md): Grumman G 164B · Sac City, IA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2015 · N311AL · Substantial damage
  > The loss of engine power for reasons that could not be determined based on the available information.
- [NTSB CEN15LA344](https://openairdocs.org/ntsb/CEN15LA344.md): Erickson Larry D RAF 2000 GT · Humboldt, IA · Accident · 1 fatal · Limited investigation · Final report · Aug 9, 2015 · N315LK · Substantial damage
  > The pilot’s loss of gyroplane control while maneuvering at low altitude.
- [NTSB CEN14LA487](https://openairdocs.org/ntsb/CEN14LA487.md): Robinson Helicopter R44 II · Macedonia, IA · Accident · 1 fatal · Limited investigation · Final report · Sep 6, 2014 · N699TQ · Substantial damage
  > The pilot’s inadequate visual lookout, which resulted in a collision with a static line.
- [NTSB CEN14LA472](https://openairdocs.org/ntsb/CEN14LA472.md): Ohlgren Brent E RV-6A · Marshalltown, IA · Accident · No injuries · Limited investigation · Final report · Sep 1, 2014 · N419B · Substantial damage
  > A loss of engine power due to fuel exhaustion as a result of the pilot's misjudgment of the amount of fuel onboard prior to flight.
- [NTSB CEN14LA281](https://openairdocs.org/ntsb/CEN14LA281.md): Offchiss Edward R Avid Flyer · Lamoni, IA · Accident · Serious injuries · Limited investigation · Final report · Jun 6, 2014 · N111ED · Substantial damage
  > The student pilot’s failure to maintain control of the airplane while landing.
- [NTSB CEN13LA533](https://openairdocs.org/ntsb/CEN13LA533.md): Grumman G-164A · Atlantic, IA · Accident · Minor injuries · Limited investigation · Final report · Sep 6, 2013 · N7843 · Destroyed
  > The pilot’s delay in releasing product to reduce the airplane’s weight and improve its climb performance, which was reduced because of the high density altitude.
- [NTSB CEN13LA484](https://openairdocs.org/ntsb/CEN13LA484.md): Rockwell International S-2R · Larchwood, IA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2013 · N5610X · Substantial damage
  > A complete loss of engine power during an agricultural application flight for reasons that could not be determined because postaccident examinations did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN13FA082](https://openairdocs.org/ntsb/CEN13FA082.md): Beech P35 · Correctionville, IA · Accident · 2 fatal · Field investigation · Final report · Dec 2, 2012 · N1566Z · Substantial damage
  > The pilot’s failure to perform a go-around after encountering thick fog at night.
- [NTSB CEN12LA602](https://openairdocs.org/ntsb/CEN12LA602.md): Aero Vodochody L39C · Davenport, IA · Accident · 1 fatal · Limited investigation · Final report · Sep 1, 2012 · N139GS · Destroyed
  > The loss of airplane control for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded operation.
- [NTSB CEN12LA453](https://openairdocs.org/ntsb/CEN12LA453.md): Air Tractor AT-402B · Britt, IA · Accident · 1 fatal · Limited investigation · Final report · Jul 17, 2012 · N4843J · Substantial damage
  > The pilot’s failure to maintain clearance from power transmission lines during an agricultural application operation. Contributing to the accident was the pilot’s distracted attention due to personal cell phone use during flight operations.
- [NTSB CEN12CA435](https://openairdocs.org/ntsb/CEN12CA435.md): Bell 47G-3B-2 · Treynor, IA · Accident · No injuries · Data collection · Final report · Jul 9, 2012 · N2919W · Substantial damage
  > The pilot’s improper fuel management, which resulted in a loss of engine power due to fuel exhaustion.

Next page: https://openairdocs.org/ntsb-phases/450/cases.md?state=IA&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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."eventStateOrRegion" = 'IA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 450)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/450/cases?state=IA

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