LAX02LA284

NTSB accident investigation · Siemens Rotorway Exec 162 F · Overgaard, AZ · September 13, 2002

Accident · No injuriesLimited investigationFinal report
Date
September 13, 2002, 08:10 local (15:10 UTC)
Place
Overgaard, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N104BJSiemens Rotorway Exec 162 F
Weather
Visual (VMC) · Day
Status
Completed · report February 5, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20020913022979A
Case key
55697

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 pilot's failure to check the wind direction prior to practicing autorotations, and his misjudged flare maneuver. The tailwind was a factor.

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.

Hard landingLanding - flare/touchdown
Wind information - not obtainedPilot in commandCause
Weather condition - tailwindFactor
Autorotation - initiatedPilot in command
Proper descent rate - not maintainedPilot in commandCause
Flare - misjudgedPilot in commandCause
Roll overLanding - flare/touchdown
Dynamic rollover - encounteredPilot in command

Analysis

The helicopter sustained substantial damage during a hard landing and rollover after performing a practice autorotation. Due to excessive forward airspeed, the pilot aborted the maneuver. The application of the collective did not stop the descent. He committed to a full down autorotation and flared about 50 feet above ground level. As the helicopter contacted the ground, it pivoted on its right skid, and came to rest on its right side. Wind conditions were not checked prior to entering the autorotation, and he subsequently determined that he attempted it with a tailwind.

Factual narrative

On September 13, 2002, at 0810 mountain standard time, a Siemens Rotorway Executive 162F helicopter, N104BJ, sustained substantial damage during a hard landing and rollover after performing a practice autorotation at the Mogollon Airport (PVT), Overgaard, Arizona. The private pilot/owner operated the experimental helicopter under the provisions of 14 CFR Part 91. The pilot, the sole occupant, was not injured. The local area personal flight originated from the Mogollon airport. Visual meteorological conditions prevailed, and no flight plan had been filed.

The pilot reported practicing an autorotation. Due to excessive forward airspeed, he elected to abort the maneuver. The application of the collective did not stop the descent. He committed to a full down autorotation and flared about 50 feet above ground level (agl). As the helicopter contacted the ground, it pivoted on its right skid, and came to rest on its right side. Wind conditions were not checked prior to entering the autorotation, and he subsequently determined that he attempted it with a tailwind.

Aircraft

Registration
N104BJ
Reported as
Siemens Rotorway Exec 162 F
Category
Helicopter, amateur-built
Serial number
6194
Airframe hours
178
Engine
Rotorway R162F, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Jimmie Siemens
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Continuous airworthiness · June 15, 2002 · 22 hours before
Departed
AZ82 · Overgaard, AZ
Destination
AZ82 · Overgaard, AZ
Airport
PVT · Mogollon Airpark (PVT)

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
67
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
December 10, 2000
Seat
Left
Flight hours
1,987 total · 178 in this make and model · 1,987 as pilot in command · 70 in the last 90 days · 45 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 10 knots
Visibility
30 statute miles
Lowest ceiling
5,000 ft broken
Temperature
72 °F, dew point 48 °F
Altimeter
30.12 inHg
Observed at
KSOW, 27 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.

Other investigations on N104BJ · 1

Matched to the same aircraft by N-number and date.