GAA17CA398

NTSB accident investigation · Robinson Helicopter R44 II · Pocahontas, IL · July 7, 2017

Accident · No injuriesData collectionFinal report
Date
July 7, 2017, 16:15 local (21:15 UTC)
Place
Pocahontas, IL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Standing
Aircraft
N62FARobinson Helicopter R44 II
Defining event
Standing-engine(s) operating: Comm system malf/failure
Weather
Visual (VMC) · Day
Status
Completed · report December 15, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20170707011239A
Case key
95537

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 helicopter pilot’s miscommunication with the ground crewmember during reloading operations, which resulted in a takeoff with the filler hose attached to the helicopter and subsequent impact with a truck.

Findings · 3

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.

Object/animal/substance: ground vehicleEnvironmental issues › Physical environment · Effect on operationRobinson Helicopter R44 II: 4 casesAll aircraft: 132 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 pilot reported that the helicopter was positioned on top of a platform that was located on top of the agricultural chemical truck while he was waiting for the ground crew to reload the helicopter. During the reload, he misinterpreted the ground crew members hand and arm signal and initiated the takeoff. He quickly realized that the filler hose was still attached when the helicopter yawed right and simultaneously banked left. He attempted a right pedal turn to avoid tail rotor contact with the truck, and he tried to position the helicopter as far from the truck as possible. However, when the helicopter descended, the main rotor blades struck the truck, and the helicopter came to rest on its left side. The helicopter sustained substantial damage to the tail rotor drive system and the main rotor system. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Factual narrative

The helicopter pilot reported that the helicopter was positioned on top of a platform that was located on top of the agricultural chemical truck. And he was waiting for the ground crew to reload the helicopter. During the reload, he misinterpreted the ground crew members hand and arm signal, and initiated the takeoff. He quickly realized that the filler hose was still attached when the helicopter yawed right and simultaneously banked left. He attempted a right pedal turn to avoid tail rotor contact with the truck, and he tried to position the helicopter as far from the truck as possible. However, when the helicopter descended, the main rotor blades struck the truck and the helicopter came to rest on its left side. The helicopter sustained substantial damage to the tail rotor drive system, and the main rotor system. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Aircraft

Registration
N62FA
Reported as
Robinson Helicopter R44 II (II)
Category
Helicopter
Serial number
11176
Built
2006
Airframe hours
1,857.9
Engine
Lycoming IO-540 SER, 245 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Jmx Helicopters LLC
Registered owner
Jmx Helicopters LLC
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · January 21, 2017
Departed
Pocahantas, IL
Destination
Pocahantas, IL

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
33
Injuries
None
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
June 4, 2017
Seat
Right
Restraint
3-point
Flight hours
1,630 total · 715 in this make and model · 1,594 as pilot in command · 16 in the last 90 days · 16 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 68 °F
Altimeter
29.98 inHg
Observed at
KALN, 24 nm away

Docket · 2

The files NTSB released with the investigation on November 2, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.8 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.