MIA01LA208

NTSB accident investigation · Morton S. Dismuke Spencer Amphib 1-12E · Pensacola, FL · August 4, 2001

Accident · No injuriesLimited investigationFinal report
Date
August 4, 2001, 15:30 local (20:30 UTC)
Place
Pensacola, FL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N112MDMorton S. Dismuke Spencer Amphib 1-12E
Weather
Visual (VMC) · Day
Status
Completed · report November 6, 2001
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20010804020329A
Case key
52940

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

The dragging of the right wing during water operations for undetermined reasons resulting in the airplane flipping inverted.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Dragged wing,rotor,pod,float or tail/skidTaxi
Reason for occurrence undeterminedCause
Wing - out of balance
Aircraft control - not possiblePilot in command
Roll overTaxi

Analysis

The pilot stated they landed on Perdido and to perform water maneuvers. During the first water maneuver the airplane developed a tendency to turn to the right as it gained speed. On the second maneuver, at 20 to 25 knots, the airplane again started turning to the right. He reduced engine power to investigate what was wrong, and when he did the right wing went further into the water and the airplane turned over inverted. The left wing went into the water and contacted the bottom of the bay. Their intentions, had the accident not occurred, was to take off after high speed taxiing and return to Coastal Airport. Postcrash examination of the airplane by an FAA inspector showed the right float was damaged during the accident and it could not be determined what was causing the airplane to turn right during water operations..

Factual narrative

On August 4, 2001, about 1530 central daylight time, a Morton S. Dismuke Spencer Amphib 1-12E, N112MD, registered to an individual, crashed while performing high speed taxiing on Perdido Bay, near Pensacola, Florida, while on a 14 CFR Part 91 personal flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The airplane received substantial damage and the private-rated pilot and one passenger were not injured. The flight originated from Coastal Airport, Pensacola, Florida, the same day, about 1400.

The pilot stated that after departing Coastal Airport, they flew to Ferguson Airport for fuel. After refueling, they departed Ferguson Airport and performed five water landings and takeoffs. They landed on Perdido and to perform water maneuvers. During the first water maneuver the airplane developed a tendency to turn to the right as it gained speed. On the second maneuver, at 20 to 25 knots, the airplane again started turning to the right. He reduced engine power to investigate what was wrong, and when he did the right wing went further into the water and the airplane turned over inverted. The left wing went into the water and contacted the bottom of the bay. Their intentions, had the accident not occurred, was to take off after high speed taxiing and return to Coastal Airport.

Postcrash examination of the airplane by an FAA inspector showed the right float was damaged during the accident and it could not be determined what caused the airplane to turn right during water operations.

Aircraft

Registration
N112MD
Reported as
Morton S. Dismuke Spencer Amphib 1-12E
Category
Airplane, amateur-built
Serial number
201
Airframe hours
824
Engine
Continental C-285-C2, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Antony E. Fiorentino
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · September 5, 2000 · 31 hours before
Departed
83J · Pensacola, FL

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
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
August 7, 1999
Seat
Left
Flight hours
5,500 total · 100 in this make and model · 5,400 as pilot in command · 44 in the last 90 days · 19 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 73 °F
Altimeter
29.87 inHg
Observed at
PNS, 8 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.