CEN16LA121

NTSB accident investigation · Ariosto James J Ariosto Mustang II · Normangee, TX · March 4, 2016

Accident · Serious injuriesLimited investigationFinal report
Date
March 4, 2016, 12:30 local (18:30 UTC)
Place
Normangee, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N12JAAriosto James J Ariosto Mustang II
Defining event
Maneuvering: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report December 12, 2016
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20160304001789A
Case key
92818

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

A total loss of engine power due to fuel starvation as a result of the pilot's improper fuel selector positioning procedures during the flight.

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.

Engine (reciprocating)Aircraft › Aircraft power plant · Incorrect use/operationAriosto James J ARIOSTO MUSTANG II: 1 caseAll aircraft: 497 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid managementAriosto James J ARIOSTO MUSTANG II: 1 caseAll aircraft: 1,695 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

During cruise flight in the experimental, amateur-built airplane, the private pilot attempted to move the fuel selector from the left to the right fuel tank. During that process, the engine lost power, and the airplane sustained substantial damage during the subsequent forced landing. The pilot reported that he had recently modified the fuel system, and, while attempting to select the right fuel tank, he inadvertently starved the engine of fuel. The pilot reported no problems with the engine before the loss of engine power and stated that the engine lost power because he used improper procedures while attempting to change the fuel selector.

Factual narrative

On March 4, 2016, at 1230 central standard time, an Ariosto Mustang II experimental airplane, N12JA, impacted terrain following a loss of engine power near Normangee, Texas. The private pilot sustained serious injuries, and the airplane sustained substantial damage to the fuselage. The airplane was registered to and operated by a private individual as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed at the time of the accident, and no flight plan was filed. The local flight departed at an unknown time. According to a Federal Aviation Administration (FAA) inspector who interviewed the pilot, the pilot was attempting to change the fuel draw from the left to right fuel tank, but starved the engine of fuel in the change process due to a new modification in the fuel system. The pilot reported no problems with the engine prior to the loss of engine power due to fuel starvation. The pilot stated the engine lost power due to improper procedures completed by him while switching fuel tanks. Examination of the accident site by the FAA inspector revealed the airplane impacted terrain in a left wing, nose low attitude. The airplane came to rest upright in a field that was surrounded by trees. The engine and firewall were separated from the fuselage. The left wing fuel tank was compromised and right wing fuel tank contained an unknown amount of fuel. One propeller blade remained attached to the hub and no damage was noted, and one propeller blade was separated near the hub.

Aircraft

Registration
N12JA
Reported as
Ariosto James J Ariosto Mustang II
Category
Airplane, amateur-built
Serial number
MII-1335
Built
1992
Airframe hours
233
Engine
Lycoming O&VO-360 SER, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · January 15, 2016 · 4 hours before
Equipment
Unknown

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
76
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Last flight review
July 22, 2014
Seat
Left
Flight hours
2,851 total · 4 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 34 °F
Altimeter
30.20 inHg
Observed at
CFD, 23 nm away

Docket · 3

The files NTSB released with the investigation on October 6, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 161 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.