MIA05LA111

NTSB accident investigation · Hamilton Stoddard Glassair II S · Palm City, FL · May 27, 2005

Accident · Minor injuriesLimited investigationFinal report
Date
May 27, 2005, 11:35 local (15:35 UTC)
Place
Palm City, FL
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N401KYHamilton Stoddard Glassair II S
Weather
Visual (VMC) · Day
Status
Completed · report March 28, 2006
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20050527016049A
Case key
61616

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

Improper maintenance by other maintenance personnel, which resulted in the throttle cable being loose and detaching from the throttle arm during takeoff, resulting in a loss of engine power.

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.

Loss of engine power(total) - mech failure/malfTakeoff - initial climb
Maintenance - improperOther maintenance personnelCause
Throttle/power lever,cable - loose part/bolt/nut/clamp/etc
Throttle/power lever,cable - disconnected
Forced landingDescent - emergency
In flight collision with objectEmergency descent/landing
Object - tree(s)

Analysis

According to the pilot, the takeoff was normal until just after rotation, when he felt a loss of power during the takeoff/initial climb. At an altitude of about 30 feet AGL, he said he saw that the engine rpm had dropped from 2270 rpm to about 1800 rpm, and he immediately concentrated on maintaining airspeed, which had dropped to about 60 to 65 mph. According to the pilot, all he could do was to maintain a wings-level attitude just above stall speed and fly the airplane into the trees. Postcrash examination of the accident airplane was performed by an FAA licensed airframe and powerplant mechanic, under the supervision of an FAA Inspector. According the mechanic, the throttle cable was found to have pulled free of the hole/nut that secured the throttle cable to the throttle arm on the carburetor. No another anomalies were noted to exist any other airplane systems.

Factual narrative

On May 27, 2005, about 1135 eastern daylight time, a Hamilton Stoddard Glasair II S experimental amateur-built airplane, N401KY, registered to and operated by a private individual, as a Title 14 CFR Part 91 personal flight, crashed in the vicinity of the Naked Lady Ranch Airport, Palm City, Florida. Visual meteorological conditions prevailed, and no flight plan was filed. The airline transport-rated pilot received minor injuries, and the airplane was destroyed. The flight was originating at the time of the accident.

According to the pilot, the takeoff was normal until just after rotation, when he felt a loss of power during the takeoff/initial climb. At an altitude of about 30 feet AGL, he said he saw that the engine rpm had dropped from 2270 rpm to about 1800 rpm, and he immediately concentrated on maintaining airspeed, which had dropped to about 60 to 65 mph. According to the pilot, all he could do was to maintain a wings-level attitude just above stall speed and fly the airplane into the trees.

Postcrash examination of the accident airplane was performed by an FAA licensed airframe and powerplant mechanic, under the supervision of an FAA Inspector. According the mechanic, the throttle cable was found to have pulled free of the hole/nut that secured the throttle cable to the throttle arm on the carburetor. No other anomalies were noted to exist in any other airplane systems.

Aircraft

Registration
N401KY
Reported as
Hamilton Stoddard Glassair II S
Category
Airplane, amateur-built
Serial number
2083
Airframe hours
250
Engine
Lycoming O-320-D1A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Thomas M. Niebauer
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 1, 2004 · 15 hours before
Departed
64FA · Palm City, FL
Destination
64FA
Airport
64FA · Naked Lady Ranch, runway 36, 3,300 × 120 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
59
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1
Last flight review
January 1, 2005
Seat
Left
Flight hours
15,000 total · 120 in this make and model · 10,000 as pilot in command · 2 in the last 90 days · 1 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 7 knots
Visibility
10 statute miles
Lowest ceiling
3,400 ft broken
Temperature
84 °F, dew point 72 °F
Altimeter
30.01 inHg
Observed at
SUA

FAA reports on this event · 1

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