ERA23LA180

NTSB accident investigation · Cessna 421C · Leesburg, VA · April 5, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
April 5, 2023, 14:00 local (18:00 UTC)
Place
Leesburg, VA · On KJYO Airport
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N880JSCessna 421C
Defining event
Landing-flare/touchdown: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20230405004459A
Case key
107014

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

Separation of the left man landing gear scissor hardware, which resulted in a loss of directional control and subsequent runway excursion during landing.

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.

Misc hardware: fastenersAircraft › Fluids/misc hardware · Not installed/availableCessna 421C: 1 caseAll aircraft: 58 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleCessna 421C: 2 casesAll aircraft: 3,958 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 was landing the airplane and reported that as the main landing gear touched down on the runway the airplane immediately veered to the left. The pilot applied right rudder control input but was unable to control the airplane’s direction. The left main landing gear then collapsed as the airplane departed the runway surface and the airplane came to a stop off the left side of the runway. The airplane’s left wing was substantially damaged during the accident. A Federal Aviation Administration inspector examined the airplane after the accident. He observed that the left main landing gear trunnion was cracked and that the strut had separated from the trunnion. The inspector also found that the hardware connecting the scissor link was missing and that the scissor link did not display damage consistent with a shearing action or other abnormal stress. Given this information it is likely that the hardware securing the scissor was not present at the time of the landing, which allowed the left main landing gear wheel to freely castor about the strut, resulting in the loss of directional control at touchdown.

Aircraft

Registration
N880JS
Reported as
Cessna 421C
Category
Airplane
Serial number
421C-0489
Built
1979
Airframe hours
4,873.6
Engines
Continental GTSIO-520-L2B, 375 horsepower, reciprocatingContinental GTSIO-520-L2B, 375 horsepower, reciprocating
Damage
Substantial damage
Flight
Executive/Corporate · Part 91
Operator
Bravo Aviation LLC
Registered owner
Bravo Aviation LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 1, 2022
Departed
MQY · Smyrna, TN
Destination
JYO · Leesburg, VA
Flight plan
IFR
Airport
JYO · Leesburg Exec, runway 17, 5,500 × 100 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
42
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
October 15, 2022
Seat
Left
Restraint
3-point
Flight hours
913 total · 158 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 15 knots, gusting 23
Visibility
10 statute miles
Lowest ceiling
None
Temperature
32 °F, dew point 32 °F
Altimeter
30.00 inHg
Observed at
JYO
METAR
1800Z 18015G23 SKC 10SM 30/16 A3000

Docket · 5

The files NTSB released with the investigation on February 22, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 14.5 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.