LAX08CA182

NTSB accident investigation · Robinson R44 II · Missoula, MT · June 14, 2008

Accident · Minor injuriesData collectionFinal report
Date
June 14, 2008, 11:45 local (17:45 UTC)
Place
Missoula, MT
Injuries
2 minor
Damage
Destroyed
Phase of flight
Landing
Aircraft
N272SWRobinson R44 II
Defining event
Landing-flare/touchdown: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report July 30, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20080614837269A
Case key
68228

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 student's inadvertent control interference, which the flight instructor was unable to overcome. A contributing factor was the instructor's poor crew coordination in his failure to verbally command the student to relinquish the controls and his inadequate supervision of the flight.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotRobinson Helicopter R44 II: 99 casesAll aircraft: 9,295 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · Instructor/check pilotRobinson Helicopter R44 II: 14 casesAll aircraft: 1,391 casesProbable cause
Communication (personnel): lack of communicationPersonnel issues › Task performance · Instructor/check pilotRobinson Helicopter R44 II: 2 casesAll aircraft: 84 casesProbable cause
Communication (personnel): issuing instructionsPersonnel issues › Task performance · Instructor/check pilotRobinson Helicopter R44 II: 1 caseAll aircraft: 26 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 flight instructor was having the student practice landing approaches. With an airspeed of 60 to 65 knots, the student initiated a left base turn, lowering the collective, and adding aft cyclic for a normal approach to an open field. During the turn, the instructor noted that the helicopter was descending faster than anticipated, and that "the collective was too far down, the cyclic was too far back, and [the student] had a tight hold on both controls." The instructor attempted to regain control but could not move the collective or cyclic due to the student's grip on the controls. The instructor said that no words were spoken as he struggled with the student for control of the helicopter for a period of 3 to 4 seconds. The helicopter landed hard, rolled onto its left side, and instantly caught on fire. Both occupants exited the right door. The helicopter was destroyed by fire.

Factual narrative

The flight instructor was having the student practice landing approaches. With an airspeed of 60 to 65 knots, the student initiated a left base turn, lowering the collective, and adding aft cyclic for a normal approach to an open field. During the turn, the instructor noted that the helicopter was descending faster than anticipated, and that "the collective was too far down, the cyclic was too far back, and [the student] had a tight hold on both controls." The instructor attempted to regain control but could not move the collective or cyclic due to the student's grip on the controls. The instructor said that no words were spoken as he struggled with the student for control of the helicopter for a period of 3 to 4 seconds. The helicopter landed hard, rolled onto its left side, and instantly caught on fire. Both occupants exited the right door. The helicopter was destroyed by fire.

Aircraft

Registration
N272SW
Reported as
Robinson R44 II
Category
Helicopter
Serial number
10817
Engine
Lycoming IO-540, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Instructional · Part 91
Operator
Mission Mountain Helicopters
Registered owner
Summit Cabin Holdings
Airworthiness certificate
Standard, Normal
Departed
MSO · Missoula, MT
Destination
MSO
Flight plan
Company VFR
Airport
MSO · Missoula International

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
52
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2
Flight hours
449 total · 289 in this make and model · 112 in the last 90 days · 84 in the last 30 days
Role
Student pilot
Age
42
Flight hours
4 total · 4 in this make and model · 4 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 8 knots, gusting 14
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F
Altimeter
30.06 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.