ERA12LA230

NTSB accident investigation · Sadler Terry A Merlin · Otisfield, ME · March 17, 2012

Accident · Serious injuriesLimited investigationFinal report
Date
March 17, 2012, 12:30 local (16:30 UTC)
Place
Otisfield, ME
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N6113YSadler Terry A Merlin
Defining event
Initial climb: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report October 9, 2012
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20120317004369A
Case key
83156

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 pilot's failure to maintain adequate airspeed during takeoff, which resulted in an aerodynamic stall. Contributing to the accident was his lack of experience in the airplane make and model.

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.

Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedSadler Terry A MERLIN: 1 caseAll aircraft: 1,681 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 purchased the airplane 7 years before the accident but had only accumulated 1 hour of flight time in it. Prior to the accident, the pilot and a friend performed adjustments to the airplane's floats. The pilot then taxied on the lake and departed for a local flight. A witness stated that as the airplane reached an altitude of 100 feet, it banked to the right slightly and then banked hard to the left and pitched down. The airplane impacted the frozen lake in a nose-down attitude, bounced, and came to rest, breaking the ice. Postaccident examination of the airplane found no mechanical anomalies that would have precluded normal operation.

Factual narrative

On March 17, 2012, at 1230 eastern daylight time, N6113Y, an experimental, amateur built Merlin airplane, was substantially damaged during takeoff from Pleasant Lake, Maine. The certificated private pilot was seriously injured. Visual meteorological conditions prevailed and no flight plan was filed for the local flight. According to a witness, he and the pilot made adjustments to the aircraft floats prior to the pilot's departure from the frozen lake. The witness reported that the pilot taxied on the ice, and then departed to the north. As the airplane reached an altitude of approximately 100 feet, the right wing "dipped a little" and the airplane banked "hard left and went down." The airplane impacted the frozen lake nose first and bounced, before impacting again and breaking the ice. In a telephone interview with the pilot, he reported that he purchased the airplane in 2005 and has flown about 1 hour in the airplane since then. The most recent flight he conducted took place a few weeks prior to the accident. During that flight, the airplane "pulled to the right." As a result, the pilot made adjustments to the floats to assure they were aligned properly. The pilot reported that on the day of the accident he taxied around the lake for a while, and then departed. As the airplane reached an altitude of about 100 feet, it "felt funny and nosed down." He attempted to set the airplane back down on the lake; however, the nose of the airplane impacted the lake and the airplane bounced. The pilot reported that he did not experience a loss of engine power during the flight. In the NTSB Pilot/Operator Accident Report (Form 6120), submitted by the pilot, he stated during departure it felt as if a gust of wind struck the airplane. The airplane climbed to the right and the nose dropped straight down, impacting the lake. The winds reported at the closest airport, 10 nautical miles to the east, were from 280 degrees at 4 knots. An examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed flight control continuity from the cockpit to all flight control surfaces.

Aircraft

Registration
N6113Y
Reported as
Sadler Terry A Merlin
Category
Airplane, amateur-built
Serial number
94029
Engine
Subaru ALL MDLS A/B, 400 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Schaff James F
Registered owner
Schaff James F
Airworthiness certificate
Special, Experimental (Special)
Departed
Otisfield, ME
Destination
Otisfield, ME

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
64
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
900 total · 1 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
52 °F, dew point 30 °F
Altimeter
30.34 inHg
Observed at
LEW, 10 nm away

Docket · 6

The files NTSB released with the investigation on August 3, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 10.2 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.