GAA16CA088

NTSB accident investigation · Day William L Minicoupe · Middle River, MD · December 20, 2015

Accident · No injuriesData collectionFinal report
Date
December 20, 2015, 11:37 local (16:37 UTC)
Place
Middle River, MD
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N853WDDay William L Minicoupe
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report March 14, 2016
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
Federal Aviation Administration
FAA report
20151220022869A
Case key
92489

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 incorrect installation of the rudder horn and failure to properly inspect the installation, which led to a loss of directional control during takeoff.

Findings · 3

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.

Empennage structure: rudderAircraft › Aircraft structures · Incorrect service/maintenanceDay William L MINICOUPE: 1 caseAll aircraft: 15 casesProbable cause
Maintenance: installationPersonnel issues › Task performance · PilotDay William L MINICOUPE: 1 caseAll aircraft: 371 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 of the experimental amateur built airplane reported that during the takeoff roll the airplane veered to the left. As the airplane neared the left edge of the runway, the pilot rotated the airplane in an attempt to be come airborne, but the airplane aerodynamically stalled three feet above the runway and then impacted the runway nose first. The pilot reported that he performed a post-accident inspection of the airplane with the assistance of another pilot, and he discovered that he installed the rudder control horn upside down. The improper installation reversed the rudder control input. When right rudder input was needed during takeoff to overcome the airplane's left turning tendency precipitated by the engine and propeller, pushing on the right rudder pedal made the airplane turn left. The pilot recommended that he verify proper control connections after maintenance.

Factual narrative

The pilot of the experimental amateur built airplane reported that during the takeoff roll the airplane veered to the left. As the airplane neared the left edge of the runway, the pilot rotated the airplane in an attempt to be come airborne, but the airplane aerodynamically stalled three feet above the runway and then impacted the runway nose first. The pilot reported that he performed a post-accident inspection of the airplane with the assistance of another pilot, and he discovered that he installed the rudder control horn upside down. The improper installation reversed the rudder control input. When right rudder input was needed during takeoff to overcome the airplane's left turning tendency precipitated by the engine and propeller, pushing on the right rudder pedal made the airplane turn left. The pilot recommended that he verify proper control connections after maintenance.

Aircraft

Registration
N853WD
Reported as
Day William L Minicoupe
Category
Airplane, amateur-built
Serial number
WD00001
Built
2013
Airframe hours
1
Engine
Volkswagen 1915 CC, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · November 29, 2015
Departed
MTN · Middle River, MD
Destination
MTN · Middle River, MD
Airport
MTN · Martin State, runway 33, 6,997 × 180 ft, asphalt
Equipment
None

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
57
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
September 5, 2014
Seat
Single
Restraint
3-point
Flight hours
384 total · 292 as pilot in command · 8 in the last 90 days · 4 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 4 knots
Visibility
10 statute miles
Temperature
43 °F, dew point 19 °F
Altimeter
30.59 inHg
Observed at
KMTN, 1 nm away

Docket · 2

The files NTSB released with the investigation on March 8, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.6 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 N853WD · 1

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