CEN14CA310

NTSB accident investigation · Cessna 421A · Dallas, TX · May 24, 2014

Accident · No injuriesData collectionFinal report
Date
May 24, 2014, 07:15 local (12:15 UTC)
Place
Dallas, TX
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N936UCessna 421A
Defining event
Taxi-to runway: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report September 2, 2014
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA North Texas FSDO
FAA report
20140524020129A
Case key
89518

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 improper rigging of the landing gear by maintenance personnel, which resulted in the 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.

Maintenance: scheduled/routine maintenancePersonnel issues › Task performance · Maintenance personnelCessna 421A: 1 caseAll aircraft: 320 casesProbable cause
Landing gear systemAircraft › Aircraft systems · Incorrect service/maintenanceCessna 421A: 1 caseAll 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, with three passengers, proceeded toward the runway for departure, in a twin-engine airplane. As the airplane approached the taxiway intersection, the right main landing gear collapsed, causing the right wing tank and right engine propeller to impact the ground. Examination of the airplane revealed substantial damage to the right wing and damage to the right engine propeller. Further examination of the landing gear revealed that the gear was not properly rigged.

Factual narrative

The pilot, with three passengers, proceeded toward the runway for departure, in a twin-engine airplane. As the airplane approached the taxiway intersection, the right main landing gear collapsed, causing the right wing tank and right engine propeller to impact the ground. Examination of the airplane revealed substantial damage to the right wing and damage to the right engine propeller. Further examination of the landing gear revealed that the gear was not properly rigged.

Aircraft

Registration
N936U
Reported as
Cessna 421A
Category
Airplane
Serial number
421A0065
Built
1969
Engines
Cont Motor GTSIO-520-C, 340 horsepower, reciprocatingCont Motor GTSIO-520-C, 340 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Operator
Amigo Banding Services Inc
Registered owner
Amigo Banding Services Inc
Airworthiness certificate
Standard, Normal
Departed
KRBD · Dallas, TX
Destination
Kissimee, FL
Flight plan
IFR
Airport
KRBD · Dallas Executive

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
53
Injuries
None
Certificates
Airline transport, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
March 2, 2014
Seat
Left
Restraint
Lap only
Flight hours
20,000 total · 1,500 in this make and model

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None

Docket · 1

The files NTSB released with the investigation on August 25, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.9 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.