# Accident 20060630026979A: Bell UH1H, Chicago, IL, June 30, 2006

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 30, 2006, 11:59 local time
- Place: Chicago, IL
- Damage: Destroyed
- Phase of flight: Autorot Descent (Rotorcraft)
- Operating rules: General operating rules (Part 91)
- Location: 41.8381° N, 87.6033° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=41.8381&lon=-87.6033&mi=10
- Aircraft: N681FD, registered now (https://openairdocs.org/aircraft/N681FD) (OpenAirDocs)
- Registry model: Bell 412EP (registry code 1182205, https://openairdocs.org/model/bell-412ep) (OpenAirDocs)
- Registry engine: Pratt & Whitney Canada PT6T-3DF (registry code 52227, https://openairdocs.org/engine/pratt-whitney-canada-pt6t-3df) (OpenAirDocs)
- Reported make and model: BELL UH1H
- Reported engine: LYC T53L13B
- Fatal injuries: 0
- NTSB investigation: [NTSB CHI06GA174](https://openairdocs.org/ntsb/CHI06GA174) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20060630026979A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) AIRCRAFT DEPARTED 95TH ST HELIPORT IN RESPONSE TO A REPORTED INCIDENT IN THE PROXIMITY OF NORTH AVE BEACH @ APPROXIMATELY 41ST AND THE LAKE. AN EYEWITNESS DESCRIBED SEEING THE TAIL ROTOR STOP AND START AGAIN, BUT INTERMITTENTLY. THE AIRCRAFT THEN PERFORMED AN AUTOROTATION TO A PARK BORDERED BY LAKE SHORE DRIVE AND THE LAKE FRONT. THE AIRCRAFT LANDED TO THE NORTHWEST ENCOUNTERING A DOWNWARD SLOPE, THE AIRCRAFT ROLLED AND STOPPED ON THE TOP OF THE AIRFRAME. ALL CREWMEMBERS AND PASSENGERS WERE ABLE TO EXIT THE AIRCRAFT THROUGH THE LEFT COCKPIT DOOR.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI06GA174](https://openairdocs.org/ntsb/CHI06GA174), Jun 30, 2006: Bell UH-1H (N681FD), Chicago, IL, substantial damage. Probable cause: The in-flight separation of a tail rotor driveshaft hanger bearing due to inadequate maintenance performed by maintenance personnel. Contributing to the accident was the inability to maintain…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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