Accident · 2009-05-12
What the record says
- Event date
- 2009-05-12
- Event type
- Accident
- Highest injury level
- No injuries
- Aircraft
- ROBINSON HELICOPTER R44 (N7196H)
- Operating rule
- PUBU
- Operator
- STATE OF ALASKA Operator named in NTSB report
- Operated by (per NTSB report)
- STATE OF ALASKA
Probable cause
The main rotor transmission mount design, which resulted in an in-flight vibration/oscillation, and damage to the helicopter during an emergency descent and hard landing. Contributing to the accident was the lack of information from the manufacturer regarding this known flight oscillation, and loading the helicopter beyond the forward center of gravity limit by the pilot.
Source: NTSB case ANC09GA040Flight crew
Certification and experience as recorded in the NTSB accident database for this event. The NTSB records these facts about the crew's flying history; GroundCheck shows them as filed, without names or identities.
| Role | Certificate | Instrument rating | Age | Medical | Flight hours |
|---|---|---|---|---|---|
| Pilot | Flight instructor / Commercial | Airplane | 46 | Class 2 (2008-10-24) | 4,800 total · 364 in this make/model · 4,600 as PIC · 31 last 90 days |
Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.