CHI04LA212 · Robinson R44
Midwest Aeronautical Training Robinson R44 · Accident: in flight collision with object during takeoff
From Spirit of St Louis Airport (SUS) to an unrecorded destination
Event
- NTSB case
- CHI04LA212
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Robinson R44
- Aircraft type
- Robinson R44
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N7036J
- Operator
- Midwest Aeronautical Training
- Onboard fatalities
- Unknown
- Route
- From Spirit of St Louis Airport (SUS), Chesterfield, MOTo not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Takeoff
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- In flight collision with object
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Clearance, not maintained
- Pilot in command › Preflight planning/preparation, inadequate
- Pilot in command › Unsuitable terrain or takeoff/landing/taxi area, selected
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The helicopter was substantially damaged when the main rotor contacted an open hangar door during takeoff and the helicopter subsequently impacted the ground. The pilot stated that the helicopter was parked on the ramp approximately 35 feet from the hangar. The bi-fold hangar door was open and extended about 10 feet out over the ramp. He stated that after takeoff, as the aircraft began to move away from the hangar, the passenger in the left front seat "accidentally and inadvertently hit or bumped the counterweight portion of the cyclic." The helicopter drifted toward the open hangar door and before he could correct the drift the main rotor clipped the bottom edge of the door. He recalled: "I quickly maneuvered away from the hangar building and began to level the aircraft." The helicopter descended to the ramp. The subsequent hard landing caused the skids to collapse and the main rotor to sever the tail boom. A ground witness to the accident submitted a video recording of the accident flight. Review of the recording revealed that after the helicopter lifted-off, it paused in a hover for a few seconds and then began to climb out, subsequently contacting the door. No drift toward the hangar building was observed prior to rotor blade contact with the door.
Probable cause
The pilot's inadequate preflight planning due to his selection of an unsuitable takeoff area and his failure to maintain clearance from the open hangar door. A contributing factor was the open hangar door.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI04LA212
- Event ID
- 20040825X01288
- Case number
- CHI04LA212
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, coordinates. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: a783be9e08e3c611bffe046cbcb3ae289db32e812b535ad109b6fa5e228bc5b7; retrieved 2026-09-21T19:10:42.104Z.