WPR11CA468

NTSB accident investigation · Beech 36 · Riverton, WY · September 24, 2011

Accident · No injuriesData collectionFinal report
Date
September 24, 2011, 10:00 local (16:00 UTC)
Place
Riverton, WY
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N7549NBeech 36
Defining event
Landing-landing roll: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report December 1, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110924023569A
Case key
81904

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 inadvertent retraction of the landing gear during the landing roll.

Findings · 2

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotBeech 36: 1 caseAll aircraft: 1,386 casesProbable cause
Landing gear system: landing gear selectorAircraft › Aircraft systems · Unintentional use/operationBeech 36: 1 caseAll aircraft: 54 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 said that after landing he inadvertently moved the main landing gear lever rather than the flap lever to the retract position, which resulted in the collapse of all three landing gear and substantial damage to the undercarriage of the airplane. The pilot reported no anomalies with the airplane that would have precluded normal operation.

Factual narrative

The pilot said that after landing he inadvertently selected the main landing gear lever rather than the flap lever to the retract position, which resulted in the collapse of all three landing gear and substantial damage to the undercarriage of the airplane.

Aircraft

Registration
N7549N
Reported as
Beech 36 (NO SERIES)
Category
Airplane
Serial number
E-66
Airframe hours
4,689
Engine
Teledyne Continental IO-520, 285 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 8, 2011 · 38 hours before
Departed
RIW · Riverton, WY
Destination
RIW · Riverton, WY
Flight plan
Unknown
Airport
RIW · Riverton Regional Airport, runway 28, 8,203 × 150 ft, asphalt

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
49
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
October 31, 2010
Seat
Left
Flight hours
219 total · 130 in this make and model

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 27 °F
Altimeter
30.31 inHg
Observed at
RiW

Docket · 1

The files NTSB released with the investigation on October 26, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 467 KB 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.