- Date
- January 22, 2020, 13:32 local (19:32 UTC)
- Place
- Minot, ND
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N947LHBell 407
- Defining event
- Landing-flare/touchdown: Collision during takeoff/land
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 3
- NTSB office
- Central Region
- Parties
- FAA FSDO
- FAA report
- 20200122004599A
- Case key
- 100876
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 failure to maintain clearance from fencing around the landing pad during landing, which resulted in the tail rotor contacting the fence.
Findings · 4
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot departed on a positioning flight to pick up a medical crew. As he neared the helipad, he performed a right 180° circling approach. After completing the turn, the pilot thought he was a little low on final approach, and "pulled in a little collective" as he leveled the helicopter, which contacted the landing pad "firmly." Before the subsequent departure, the pilot felt a vibration, and he shut down the helicopter to investigate. The crew walked toward the tail and noticed a slight bend in the lower vertical fin, the tips of both tail rotor blades missing, and the helipad safety fence missing a small section of the fence-edge pipe. Further examination of the helicopter identified cracks in the tail boom structure. A security camera video of the helipad showed that the helicopter's tail rotor impacted the fence during the landing.
Factual narrative
On January 22, 2019, about 1332 central standard time, a Bell 407 helicopter, N947LH, impacted a helipad perimeter fence during a landing near Minot, North Dakota. The pilot, sole occupant was not injured, and the helicopter sustained substantial damage. The helicopter was registered to and operated by Executive Air Taxi Corp under the provisions of Title 14 Code of Federal Regulations Part 91 as a positioning flight. Day visual meteorological conditions prevailed for the flight. The pilot conducted a flight to the Trinity Medical Helipad (2ND4) to pick up the medical crew. The pilot stated he performed a right 180° circling approach to the helipad. As he finished the turn, he thought he was a little low on final approach and "pulled in a little collective." He applied more collective as he was leveling off and the "helicopter contacted the pad firmly." The pilot added that it was firmer than a normal landing, but he thought everything was okay until he noticed a small vibration. Before departing with the medical crew, the pilot still felt the vibration in the helicopter, so he shut the helicopter down to check. After shutdown, the crew walked toward the tail and noticed a slight bend in the lower vertical fin, the tips of both tail rotor blades missing, and the helipad safety fence was missing a small section of the fence-edge pipe. Additional examination of the helicopter identified cracks in the tailboom structure. A review of security camera video of the helipad showed the helicopter's tail rotor impact with the edge-fencing.
Aircraft
- Registration
- N947LH
- Reported as
- Bell 407 (No Series)
- Category
- Helicopter
- Serial number
- 53509
- Built
- 2001
- Airframe hours
- 7,601.9
- Engine
- Allison 250-C47, 650 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Positioning · Part 91
- Operator
- Executive Air Taxi Corp
- Registered owner
- Executive Air Taxi Corp
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Continuous airworthiness · December 26, 2019
- Departed
- KMOT · Minot, ND
- Destination
- 2ND4 · Minot, ND
- Flight plan
- Company VFR
- Airport
- 2ND4 · Trinity Health
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 60
- Injuries
- None
- Certificate
- Airline transport
- Instrument ratings
- Helicopter
- Medical
- Class 2, Without waivers/limitations
- Last flight review
- July 18, 2019
- Seat
- Right
- Restraint
- 3-point
- Flight hours
- 6,340.7 total · 98 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 300° at 6 knots
- Visibility
- 10 statute miles
- Temperature
- 28 °F, dew point 21 °F
- Altimeter
- 29.78 inHg
- Observed at
- KMOT, 2 nm away
Docket · 3
The files NTSB released with the investigation on March 18, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.