WPR13CA413

NTSB accident investigation · Cessna T310R · San Luis Obispo, CA · September 16, 2013

Accident · No injuriesData collectionFinal report
Date
September 15, 2013, 19:51 local (Sep 16, 2013, 02:51 UTC)
Place
San Luis Obispo, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N712SBCessna T310R
Defining event
Landing-landing roll: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report February 4, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20130915022589A
Case key
88067

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 action of retracting the landing gear instead of the flaps during the landing roll, which resulted in the right main landing gear collapsing.

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.

Landing gear system: gear extension and retract sysAircraft › Aircraft systems · Unintentional use/operationCessna T310R: 3 casesAll aircraft: 416 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 reported that during the landing roll of his second uneventful landing, the right main landing gear started to shimmy. He slowed the airplane and proceeded towards the nearest taxiway. Before exiting the runway, the pilot went to retract the flaps when he inadvertently raised the landing gear handle. He quickly re-lowered the landing gear handle; however, the right main landing gear had already started to retract. The airplane veered to the right, exited the runway surface, and came to rest on the grass. The airplane's right wing was substantially damaged. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Factual narrative

The pilot reported that during the landing roll of his second uneventful landing, the right main landing gear started to shimmy. He slowed the airplane and proceeded towards the nearest taxiway. Before exiting the runway, the pilot went to retract the flaps when he inadvertently raised the landing gear handle. He quickly re-lowered the landing gear handle; however, the right main landing gear had already started to retract. The airplane veered to the right, exited the runway surface, and came to rest on the grass. The airplane's right wing was substantially damaged. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Aircraft

Registration
N712SB
Reported as
Cessna T310R
Category
Airplane
Serial number
310R0122
Built
1975
Airframe hours
4,795
Engines
Continental TSIO-520 SERI, 300 horsepower, reciprocatingContinental TSIO-520 SERI, 300 horsepower, reciprocating
Damage
Substantial damage
Fire
Unknown
Flight
Personal · Part 91
Operator
Singer Nathan
Registered owner
Singer Nathan
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 1, 2012 · 38 hours before
Departed
SBP · San Luis Obispo, CA
Destination
SBP · San Luis Obispo, CA
Airport
SBP · San Luis County Rgnl, runway 29, 6,100 × 50 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
59
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
August 24, 2013
Seat
Left
Restraint
3-point
Flight hours
2,495 total · 760 in this make and model · 2,389 as pilot in command · 7 in the last 90 days · 6 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 6 knots, gusting 16
Visibility
10 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 54 °F
Altimeter
29.72 inHg
Observed at
SBP

Docket · 1

The files NTSB released with the investigation on January 9, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 625 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.