CHI07CA094

NTSB accident investigation · McCall Rotorway 162F · Malta, IL · March 26, 2007

Accident · No injuriesData collectionFinal report
Date
March 26, 2007, 16:45 local (21:45 UTC)
Place
Malta, IL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N162MCMcCall Rotorway 162F
Weather
Visual (VMC) · Day
Status
Completed · report June 27, 2007
Report
Approved by Office Director
Parties
DuPage FSDO, Illinois
FAA report
20070326006629A
Case key
65492

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 improper use of the rotorcraft flight controls resulting in a dynamic rollover during takeoff. A factor was the soft ground that the left skid encountered.

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.

Roll overTakeoff
Terrain condition - softFactor
Rotorcraft flight controls - improper use ofPilot in commandCause
Dynamic rollover - encounteredPilot in commandCause

Analysis

The helicopter sustained substantial damage during a dynamic roll over on takeoff. The pilot made a precautionary landing, in a cornfield, in response to a warning light. After resolving the light issue and during takeoff, the "right skid rose off the ground but the left skid made no attempt to raise and the helicopter abruptly rolled over onto the left skid and continued over until the rotor blades contacted the ground. ... The left skid had sunk into the ground further than it appeared." The pilot reported no mechanical malfunctions with the helicopter. The pilot's safety recommendation stated, "I could have made a ... more [thorough] check of ground conditions before attempting a takeoff."

Factual narrative

The helicopter sustained substantial damage on impact with terrain when it dynamically rolled over on takeoff following a precautionary landing, in a cornfield, in response to a warning light. The pilot reported, in reference to the takeoff, that the "right skid rose off the ground but the left skid made no attempt to raise and the helicopter abruptly rolled over onto the left skid and continued over until the rotor blades contacted the ground. ... The left skid had sunk into the ground further than it appeared." The pilot reported no mechanical malfunctions with the helicopter. The pilot's safety recommendation stated, "I could have made a ... more [thorough] check of ground conditions before attempting a takeoff."

Aircraft

Registration
N162MC
Reported as
McCall Rotorway 162F
Category
Helicopter, amateur-built
Serial number
6493
Airframe hours
202.3
Engine
Rotorway RI 162, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Stephen Doonnan/Lon Dienst
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · November 1, 2006
Departed
DKB · De Kalb, 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
52
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
3,892 total · 33 in this make and model · 3,853 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 15 knots, gusting 22
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 61 °F
Altimeter
29.95 inHg
Observed at
DKB

FAA reports on this event · 1

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