ERA19TA067

NTSB accident investigation · Beech A36 · Summerland Key, FL · November 23, 2018

Accident · No injuriesClass 3Final report
Date
November 23, 2018, 08:20 local (13:20 UTC)
Place
Summerland Key, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N41VKBeech A36
Defining event
Landing-landing roll: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20181123022839A
Case key
98784

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 inadvertent retraction of the landing gear during landing rollout, resulting in a landing gear collapse.

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 selectionPersonnel issues › Action/decision · PilotBeech A36: 4 casesAll aircraft: 397 casesProbable cause
Landing gear systemAircraft › Aircraft systems · Incorrect use/operationBeech A36: 2 casesAll aircraft: 113 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 taxi after landing on a 2,550-ft-long asphalt runway, he intended to retract the flaps, but accidently retracted the landing gear, resulting in the nose gear and right main landing gear collapsing on the runway. The pilot added that that there were no preimpact mechanical malfunctions with the airplane. Examination of the accident site revealed runway scrape marks and propeller strikes originating about 1,000 ft beyond the approach end of the runway. The marks extended about 500 ft and terminated at the wreckage, off the left side of the runway. The left main landing gear remained extended and the right wing and lower fuselage sustained damage. The length of scrape marks and extent of damage were consistent with a landing gear collapse during a high-speed landing rollout, rather than a low-speed taxi after landing. The airplane was equipped with a squat switch on both main landing gear to prevent inadvertent landing gear retraction on the ground; however, the switch required weight-on-wheels to work effectively. It's likely that the pilot bounced the landing and attempted to retract the flaps in an effort to settle the airplane on the runway for better wheel braking; however, without weight on the right main landing gear, the gear retracted when the pilot inadvertently moved the landing gear lever instead of the flap lever.

Factual narrative

On November 23, 2018, about 0820 eastern standard time, a Beech A36, N41VK, was substantially damaged when it was involved in an accident in Summerland Key, Florida. The private pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that during taxi after landing, he intended to retract the flaps, but accidently retracted the landing gear, resulting in the nose gear and right main landing gear collapsing on the runway. The pilot also reported that there were no preimpact mechanical malfunctions with the airplane. Examination of the accident site by a Federal Aviation Administration inspector revealed runway scrape marks and propeller strikes originating about 1,000 ft beyond the approach end of runway 12, a 2,550-ft-long asphalt runway. The marks extended about 500 ft and terminated at the wreckage, off the left side of the runway. The inspector added that the left main landing gear remained extended and he noted damage to the right wing and lower fuselage. The airplane was equipped with a squat switch on both main landing gear to prevent inadvertent landing gear retraction on the ground; however, the switch required weight-on-wheels to work effectively.

Aircraft

Registration
N41VK
Reported as
Beech A36 (UNDESIGNAT)
Category
Airplane
Serial number
E-1885
Built
1981
Airframe hours
5,525
Engine
Continental IO-550, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 7, 2018 · 70 hours before
Departed
PMP · Pompano Beach, FL
Destination
FD51 · Summerland Key, FL
Flight plan
IFR
Airport
FD51 · Summerland Key Cove Airport, runway 12, 2,550 × 20 ft, asphalt
Equipment
ADS-B, Auto-pilot, Onboard weather, Stall warning system

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
65
Injuries
None
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Seat
Left
Restraint
3-point
Flight hours
1,891 total · 999,999 in this make and model · 1,851 as pilot in command · 41 in the last 90 days · 15 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 70 °F
Altimeter
30.02 inHg
Observed at
NQX, 14 nm away

Docket · 5

The files NTSB released with the investigation on February 28, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.7 MB 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.

Other investigations on N41VK · 1

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