ERA11CA440

NTSB accident investigation · Nelsen Lynn H Lightning · Frostproof, FL · August 5, 2011

Accident · Minor injuriesData collectionFinal report
Date
August 5, 2011, 09:15 local (13:15 UTC)
Place
Frostproof, FL
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N13LNNelsen Lynn H Lightning
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report October 17, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20110805016909A
Case key
81403

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 premature rotation during takeoff.

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.

Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedNelsen Lynn H LIGHTNING: 1 caseAll aircraft: 1,681 casesProbable cause
Action: incorrect action sequencePersonnel issues › Action/decision · PilotNelsen Lynn H LIGHTNING: 1 caseAll aircraft: 77 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 was departing from a turf runway. He reported that as he passed his normal rotation point on the runway, he rotated the airplane without verifying his airspeed, which resulted in the airplane becoming airborne prematurely. The airplane rotated, rolled to the left, impacted a light pole, and came to rest inverted. Substantial damage was sustained to both wings and the fuselage. The pilot reported that there were no mechanical failures or malfunctions of the airplane prior to the accident.

Factual narrative

The pilot of the experimental amateur-built Nelsen Lightning was departing from a turf runway. He reported that as he passed his normal rotation point on the runway, he rotated the airplane without verifying his airspeed, which resulted in the airplane becoming airborne prematurely. The airplane rotated, rolled to the left, impacted a light pole, and came to rest inverted, which resulted in substantial damage to both wings and the fuselage. The pilot reported that there were no mechanical failures or malfunctions of the airplane prior to the accident.

Aircraft

Registration
N13LN
Reported as
Nelsen Lynn H Lightning
Category
Airplane, amateur-built
Serial number
60
Airframe hours
311
Engine
Jabiru 3300, 120 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
100 hour · April 28, 2011
Departed
52FL · Frostproof, FL
Destination
52FL · Frostproof, FL
Airport
52FL · Lake Clinch Airstrip, runway 36, 2,800 × 80 ft, grass/turf

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
71
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 3, With waivers/limitations
Last flight review
September 12, 2010
Seat
Left
Flight hours
11,588 total · 300 in this make and model · 9,000 as pilot in command · 12 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 75 °F
Altimeter
30.00 inHg
Observed at
BOW, 16 nm away

Docket · 3

The files NTSB released with the investigation on September 9, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 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.