NYC07CA236

NTSB accident investigation · Robinson R44 II · Nashville, TN · September 22, 2007

Accident · No injuriesData collectionFinal report
Date
September 22, 2007, 17:10 local (22:10 UTC)
Place
Nashville, TN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Standing
Aircraft
N3184TRobinson R44 II
Weather
Visual (VMC) · Day
Status
Completed · report December 20, 2007
Report
Approved by Office Director
Parties
FAA/FSDO
FAA report
20070922830519A
Case key
66740

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 control of the helicopter.

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.

Loss of control - on ground/waterStanding - engine(s) operating
Aircraft control - not maintainedPilot in commandCause
Landing gear,skid assembly - snagged

Analysis

While student pilot was preparing for his first solo flight in the Robinson R44 II, he began the sprag clutch check and "split the needles," then released the throttle to proceed with the checklist. The governor then "kicked in", the rpm increased to 102 percent, and the helicopter began to spin on the pavement. The pilot-side skid snagged a crack on the pavement, collapsed, and the rotor and tail boom then struck the ground. The student pilot stated he never applied, unlocked, or released the collective. Examination of the flight controls by a Federal Aviation Administration inspector did not reveal any abnormalities.

Factual narrative

According to the student pilot, while preparing for his first solo flight in the Robinson R44 II, he began the sprag clutch check and "split the needles," and then released the throttle to proceed with the checklist. The governor then "kicked in", the rpm increased to 102 percent, and the helicopter began to spin on the pavement. The pilot-side skid snagged a crack on the pavement, collapsed, and the rotor and tail boom then struck the ground. The student pilot stated he never applied, unlocked, or released the collective. Examination of the flight controls by a Federal Aviation Administration inspector did not reveal any abnormalities.

Aircraft

Registration
N3184T
Reported as
Robinson R44 II
Category
Helicopter
Serial number
11562
Airframe hours
49
Engine
Lycoming IO-540, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Fly-N-Dollar Helicopter Service LLC
Registered owner
Trevor B. Noble
Airworthiness certificate
Standard, Normal
Departed
BNA · Nashville, TN
Destination
BNA
Airport
BNA · Nashville International Airpor

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
23
Injuries
None
Certificate
Student
Medical
Class 3, Without waivers/limitations
Flight hours
39 total · 39 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 57 °F
Altimeter
30.05 inHg
Observed at
BNA, 1 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.