ASN Wikibase Occurrence # 75214
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| Date: | Saturday 19 June 2010 |
| Time: | 10:50 |
| Type: |  Robinson R22 Beta II |
| Owner/operator: | Cloud 9 Helicopters LLC |
| Registration: | N7988H |
| MSN: | 4374 |
| Year of manufacture: | 2008 |
| Total airframe hrs: | 1087 hours |
| Engine model: | Lycoming O-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Location: | 11000 Aviation Boulevard, Palm Beach Gardens, Florida -
 United States of America
|
| Phase: | Take off |
| Nature: | Training |
| Departure airport: | North Palm Beach County Airport, West Palm Beach, Florida (F45) |
| North Palm Beach County Airport, West Palm Beach, Florida (F45) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The certified flight instructor (CFI) stated that he was tasked with flying with the student the morning of the accident. He then spoke with the student's CFI and was briefed on his progress and ability. Preparation for the flight included weight and balance check, and a check of the weather. Preflight inspection of the helicopter and operational checks of the helicopter were performed using the checklist.
The helicopter was taxied to a defined spot on the airport and he began teaching the student how to hover. The CFI allowed the student to control each control independently, then allowed the student to hover with corrective input from him. Approximately 15 to 20 minutes into the instructional flight while hovering, the CFI later reported recalling the helicopter moving aft followed by a violent jolt.
The helicopter rolled onto the left side and caught fire. Both occupants exited the helicopter from the right side and were not injured. Inspection of the helicopter following recovery revealed the main rotor hub was fractured and the associated main rotor blade was in 2 pieces located approximately 30 and 60 yards away, respectively. The fracture surface of the main rotor hub exhibited features consistent with cantilever bending overstress, and the separated section of the main rotor blade exhibited compression wrinkles.
.
Probable Cause: The CFI's failure to prevent ground contact during hover, which resulted in a dynamic rollover.
Accident investigation:
 |
|
Sources:
NTSB
2. FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=N7988H
3. http://helihub.com/2010/06/19/19-jun-10-n-robinson-r22-palm-beach-gardens-us-florida/
4. http://helicoptersafety.blogspot.com/2010/06/19-jun-10-n7988h-robinson-r22-west-palm.html
5. http://www.wpbf.com/news/23962984/detail.html
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Jun-2010 11:59 | slowkid | Added |
| 20-Jun-2010 14:20 | TB | Updated [Aircraft type, Registration, Operator, Source, Narrative] |
| 21-Jun-2010 15:49 | RobertMB | Updated [Registration, Cn, Operator] |
| 06-Oct-2016 15:34 | Dr.John Smith | Updated [Time, Location, Phase, Departure airport, Source, Narrative] |
| 06-Oct-2016 15:48 | Dr.John Smith | Updated [Departure airport] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 26-Nov-2017 17:56 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 19-Sep-2018 22:16 | Dr.John Smith | Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 19-Sep-2018 22:21 | Dr.John Smith | Updated [Departure airport, Destination airport] |
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