WPR18LA031

NTSB accident investigation · Robinson Helicopter R44 · Page, AZ · November 11, 2017

Accident · Minor injuriesLimited investigationFinal report
Date
November 11, 2017, 13:00 local (20:00 UTC)
Place
Page, AZ
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N744BSRobinson Helicopter R44
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report November 15, 2018
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20171111018499A
Case key
96319

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's failure to maintain pitch control of the helicopter while transitioning from a hover to forward flight.

Findings · 2

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.

Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedRobinson Helicopter R44: 3 casesAll aircraft: 526 casesProbable cause

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 commercial pilot was conducting a personal flight in the helicopter to practice operating in the traffic pattern and performing landings and hovers. When the helicopter was transitioning from a hover to forward flight, the nose suddenly pitched down more than expected. The pilot immediately applied aft cyclic but was unable to arrest the downward pitch. The helicopter subsequently impacted the ground and came to rest on its side. The passenger reported that first the skids and then the rotor blades contacted the ground. During a postaccident examination of the helicopter, flight control continuity was established with no anomalies noted that would have precluded normal operations. Thus, the pilot likely did not maintain a proper pitch attitude while transitioning to forward flight.

Factual narrative

On November 11, 2017, about 1300 mountain standard time, a Robinson R44 helicopter, N744BS, impacted terrain during takeoff from the Page Municipal Airport (PGA), Page, Arizona. The commercial pilot and passenger sustained minor injuries; the helicopter sustained substantial damage. The helicopter was registered to R44 White LLC and operated by the pilot as a Title 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originally departed about 1245. The pilot reported the purpose of the flight was to practice in the traffic pattern, landings, and hovers. After a normal traffic pattern and landing, he hovered the helicopter. While the helicopter was transitioning from hover to forward flight, the nose suddenly pitched down steeper than the pilot expected. The pilot immediately applied aft cyclic, however, he was unable to recover. The helicopter impacted the ground and came to rest on its side. The passenger reported that the helicopter started to lift off; when it was about one foot above the ground, the helicopter started leaning forward and it continued forward until the skids, then rotor blades, touched the ground. During a postaccident examination of the helicopter, the collective, cyclic, and left anti-torque pedal were manipulated within the cockpit and corresponding motion was observed at the appropriate flight controls. The right anti-torque pedal moved freely from both within the cockpit and from the tailboom; however, no corresponding motion was observed. Visual examination revealed the control tube was fracture separated underneath the heavily damaged floorboard. The operator reported that, on the morning of the accident, the owner of the helicopter flew about two hours with the pilot to orient him in the make/model helicopter involved in the accident.

Aircraft

Registration
N744BS
Reported as
Robinson Helicopter R44
Category
Helicopter
Serial number
12374
Built
2008
Airframe hours
1,424
Engine
Lycoming IO-540-AE1A5, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 2017
Departed
PGA · Page, AZ
Destination
PGA · Page, AZ
Airport
PGA · Page Municipal Airport, runway 25, 2,201 × 75 ft, asphalt
Equipment
Unknown

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
28
Injuries
Minor
Certificates
Private, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
March 16, 2017
Seat
Right
Restraint
3-point
Flight hours
1,200 total · 3 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 21 °F
Altimeter
30.07 inHg
Observed at
PGA

Docket · 5

The files NTSB released with the investigation on September 24, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.9 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.