- Date
- September 21, 2005, 10:07 local (17:07 UTC)
- Place
- Inyokern, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N702WPBell 407
- Weather
- Visual (VMC) · Day
- Status
- Completed · report April 25, 2006
- Report
- Approved by Office Director
- Parties
- Federal Aviation Administration
- FAA report
- 20050921023489A
- Case key
- 62516
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot failed to maintain tail rotor clearance from obstacles during landing.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The helicopter's tail rotor struck a rock outcropping during a confined landing at a remote mountain site. The pilot was moving two surveyors up the side of the southern slope of a mountain canyon. He dropped the surveyors off at a small saddle on a ridge, and departed to locate the next site upslope. He found a rocky outcropping that he thought would be a good landing site, and made one approach, but did not like the location due to uneven terrain. He then hovered over to another site a few yards away and proceeded to land. During the landing the tail rotor made contact with a small rock outcropping. Feeling the contact he proceeded to execute a successful autorotative landing from a hover.
Factual narrative
On September 21, 2005, about 1007 Pacific daylight time, a Bell 407, N702WP, tail rotor struck a rock outcropping during a confined area landing 8.6 miles northwest of the Inyokern Airport, Inyokern, California. Los Angeles City Department of Water and Power operated the helicopter under the provisions of 14 CFR Part 91. The airline transport pilot was not injured and the helicopter was substantially damaged. Visual meteorological conditions prevailed, and a company flight plan was in effect. The public-use flight originated at Hokinson Heliport, Sylmar, California, at 0630.
The pilot stated in the Pilot/Operator Aircraft Accident Report (NTSB Form 6120 1/2) that he was moving two surveyors up the side of the southern slope of a mountain canyon. He dropped the surveyors off at a small saddle on a ridge and departed to locate the next site upslope. He found a rocky outcropping that he thought would be a good landing site, and made one approach, but did not like the location due to uneven terrain. He then hovered over to another site a few yards away and proceeded to land. During the landing the tail rotor made contact with a small rock outcropping. Feeling the contact he proceeded to execute a successful autorotative landing from a hover.
Aircraft
- Registration
- N702WP
- Reported as
- Bell 407
- Category
- Helicopter
- Serial number
- 53543
- Airframe hours
- 1,498.1
- Engine
- Rolls-Royce C-47B, 674 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Public aircraft - local · Part 91
- Registered owner
- Los Angeles City Water and Power
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · September 1, 2005 · 19 hours before
- Departed
- KVNY · Van Nuys, CA
- Destination
- KIKY · Inyokern, CA
- Flight plan
- Company VFR
- Airport
- KIYK · Inyokern
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 58
- Injuries
- None
- Certificates
- Flight instructor, Airline transport
- Airplane ratings
- Single-engine land
- Instrument ratings
- Helicopter, Airplane
- Medical
- Class 2
- Last flight review
- May 1, 2005
- Seat
- Right
- Flight hours
- 15,800 total · 800 in this make and model · 13,600 as pilot in command · 90 in the last 90 days · 45 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Variable at 5 knots
- Visibility
- 60 statute miles
- Lowest ceiling
- None
- Temperature
- 66 °F, dew point 63 °F
- Altimeter
- 30.11 inHg
- Observed at
- KNID, 12 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.