NYC05CA101

NTSB accident investigation · Valentin Taifun 17E · Waterbury, CT · June 17, 2005

Accident · No injuriesData collectionFinal report
Date
June 17, 2005, 09:25 local (13:25 UTC)
Place
Waterbury, CT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N13BHValentin Taifun 17E
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 2005
Report
Approved by Office Director
FAA report
20050617012139A
Case key
61739

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 pilots inadvertent encounter with a downdraft, which resulted in the airplane impacting trees.

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.

In flight encounter with weatherTakeoff - initial climb
Weather condition - downdraftCause
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

During the takeoff climb, when the airplane reached an altitude of 35 feet, it encountered a downdraft caused by trees on the west side of the runway. The airplane seemed to "sag," was unable to continue its climb, and impacted the tree line. The pilot reported no mechanical deficiencies with the airplane. Witnesses also reported that the takeoff and initial climb appeared normal; however, at about 30 feet the airplane did not continue to accelerate or climb prior to impacting the trees.

Factual narrative

On June 17, 2005, at 0925 eastern daylight time, N13BH, an experimental built Taifun 17E motorglider was substantially damaged when it impacted trees during takeoff from Waterbury Airport (N41), Waterbury, Connecticut. The certificated commercial pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91.

According to the pilot, during his takeoff climb, when the airplane reached an altitude of 35 feet, the airplane encountered a downdraft caused by trees on the west side of the runway. The airplane seemed to "sag," was unable to continue its climb, and impacted the tree line. The pilot reported no mechanical deficiencies with the airplane.

Witnesses also reported that the takeoff and initial climb appeared normal; however, at about 30 feet the airplane did not continue to accelerate or climb prior to impacting the trees.

Aircraft

Registration
N13BH
Reported as
Valentin Taifun 17E
Category
Glider
Serial number
1054
Airframe hours
655
Engine
Limbach L2000 EB, 79 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Joseph Bacon
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 1, 2004 · 25 hours before
Departed
N41 · Waterbury, CT
Destination
N41 · Waterbury, CT
Airport
N41 · Waterbury Airport, runway 35, 2,005 × 35 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
62
Injuries
None
Certificate
Commercial
Last flight review
November 1, 2004
Seat
Left
Flight hours
441 total · 6 in this make and model · 390 as pilot in command · 2 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 4 knots
Visibility
10 statute miles
Lowest ceiling
1,600 ft broken
Temperature
59 °F, dew point 54 °F
Altimeter
29.69 inHg
Observed at
OXC, 11 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.