- Date
- July 6, 2006, 16:55 local (23:55 UTC)
- Place
- Medford, OR
- Injuries
- 4 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N72LBHughes 369A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 31, 2006
- Report
- Approved by Office Director
- Parties
- FAA FSDO
- Case key
- 64130
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's misinterpretation of the wind direction (in-flight planning) and subsequent improper descent rate to the ground during a landing attempt. A factor was the tailwind conditions.
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 pilot said that he flew a high reconnaissance circle over his intended landing site. He observed ripples on a pond which led him to believe that the wind was from the south. During his landing approach, as he descended to 10 to 15 feet AGL, he pulled up on the collective to extend his glide. The pilot said the helicopter started to settle and became very unstable. He "recognized it as settling with power down wind." He leveled the skids and the helicopter hit the ground; he said that 1 or 2 seconds later the helicopter began to lift and turn to the right. He applied left pedal with no response; he then lowered the collective. Subsequently, the left skid tube caught the ground and collapsed, and the helicopter came to rest on its left side. The main rotor blades did not come in contact with the ground or any part of the helicopter, but the tail rotor blades were broken. Additionally the tail boom and tail rotor drive shaft were broken. The pilot said that after he got out of the helicopter, he noticed that the wind was variable with light gusts. He said that the pond was being filled with water which gave him an incorrect interpretation of the wind conditions for landing.
Factual narrative
On July 6, 2006, at approximately 1655 Pacific daylight time, a Hughes 369A, N72LB, was substantially damaged during a hard landing near Medford, Oregon. The commercial pilot and his three passengers were not injured. The helicopter was being operated under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the personal, cross-country flight which had originated from a private residence approximately 25 minutes earlier. The pilot had not filed a flight plan.
The pilot said that he flew a high reconnaissance circle over his intended landing site. He observed ripples on a pond which led him to believe that the wind was from the south. During his landing approach, as he descended to 10 to 15 feet AGL, he pulled up on the collective to extend his glide. The pilot said the helicopter started to settle and become very unstable. He "recognized it as settling with power down wind." He leveled the skids and the helicopter hit the ground; he said that 1 or 2 seconds later the helicopter began to lift and turn to the right. He applied left pedal with no response; he then lowered the collective. Subsequently, the left skid tube caught the ground and collapsed, and the helicopter came to rest on its left side. The main rotor blades did not come in contact with the ground or any part of the helicopter, but the tail rotor blades were broken. Additionally the tail boom and tail rotor drive shaft were broken.
The pilot said that after he got out of the helicopter, he noticed that the wind was variable with light gusts. He said that the pond was being filled with water which gave him an incorrect interpretation of the wind conditions for landing.
Aircraft
- Registration
- N72LB
- Reported as
- Hughes 369A
- Category
- Helicopter
- Serial number
- 691194
- Airframe hours
- 4,405
- Engine
- Allison 250-C10D, 317 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- John Holmes
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · September 1, 2005 · 44 hours before
- Departed
- NONE · Medford, OR
- Destination
- NONE · Jacksonville, OR
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 34
- Injuries
- None
- Certificate
- Commercial
- Medical
- Class 2, Without waivers/limitations
- Last flight review
- June 1, 2006
- Seat
- Right
- Flight hours
- 188 total · 160 in this make and model · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 280° at 12 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 73 °F, dew point 48 °F
- Altimeter
- 30.14 inHg
- Observed at
- MFR, 7 nm away