FTW96LA035

NTSB accident investigation · Helio HT-295 · Llano, TX · November 1, 1995

Accident · Serious injuriesLimited investigationFinal report
Date
November 1, 1995, 16:00 local (22:00 UTC)
Place
Llano, TX
Injuries
1 serious, 1 minor, 2 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N68889Helio HT-295
Weather
Visual (VMC) · Day
Status
Completed · report February 14, 1996
Report
Approved by Office Director
FAA report
19951101035559A
Case key
19702

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 encounter with a downdraft and his inability to outclimb rising terrain. Factors were the rising terrain and high winds.

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
Terrain condition - risingFactor
Weather condition - high windFactor
Weather condition - downdraftCause
Climb - not possiblePilot in commandCause
Loss of control - in flightTakeoff - initial climb
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

The airplane departed from the grass strip for a local flight around the ranch. The pilot selected 30 degrees of flaps, and the airplane became airborne prior to reaching the midfield point of the 2,600-foot runway. He stated that the airplane climbed to approximately 100 feet above the ground and the climb subsided until the airplane nearly leveled off as the airplane was headed towards rising terrain. He retracted the flaps to 20 degrees to improve the climb performance. He maintained controlled flight as he managed to avoid the larger trees while looking for an open area. Control was lost as the pilot slowed the airplane prior to impacting trees. A 10 to 20 knot headwind prevailed and the pilot stated that a downdraft was 'created by the orographic effect of the wind blowing over the ridge line.' Several workers at the ranch witnessed the airplane 'attempting to climb in the direction of rising terrain without gaining altitude.'

Factual narrative

On November 1, 1995, at 1600 central standard time, a Helio HT- 295, N68889, was destroyed following a loss of control during initial takeoff climb near Llano, Texas. The airline transport rated pilot was seriously injured, one passenger sustained minor injuries, and two other passengers were not injured. The airplane was operated as a business flight by High Tech Inc., of Dallas, Texas, under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the local flight for which a flight plan was not filed.

According to the law enforcement officer who interviewed the pilot at the hospital, the aircraft departed from a grass airstrip at the Hickory Bluff Ranch near Llano, Texas, for a local flight around the ranch. Several workers at the ranch witnessed the airplane "attempting to climb in the direction of rising terrain without gaining altitude."

In a telephone interview conducted by the investigator in charge, and in enclosed NTSB Form 6120.1/2, the pilot stated that he selected a 30 degree flap setting as called for a short field takeoff. During the takeoff roll the engine sounded "normal" and the airplane broke ground prior to reaching mid field and a climb attitude was established. The pilot added that as the airplane climbed to about 100 feet above the ground, the "climb went from positive to approximately level," attitude as he approached rising terrain.

The pilot further stated that he elected to retract the flaps to a 20 degree setting to "improve on the climb performance" by reducing drag. The pilot attempted to maintain controlled flight and "flew around the larger trees looking for an open area" but the "rising terrain towards the ridge made it impossible to avoid contact." Control was lost as the pilot "pulled the joke back" and slowed the airplane prior to impact with the trees.

The airplane came to rest approximately a 1/2 mile from the point of departure and a post-impact fire destroyed the airplane. The pilot and the front seat passenger of the airplane told a law enforcement officer that the engine "was operating normally during the flight."

On the enclosed Pilot/Operator Report, the pilot stated that a 10 to 20 knot headwind prevailed at the time of his departure from the 2,600 foot airstrip. During the telephonic interview with the investigator in charge, the pilot attributed the deterioration in climb performance to a downdraft "created by orographic effect of the wind blowing over the ridgeline."

Aircraft

Registration
N68889
Reported as
Helio HT-295
Category
Airplane
Serial number
1718
Airframe hours
1,887
Engine
Lycoming GO-480-G1A6, 295 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Business · Part 91
Registered owner
High Test Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 8, 1995 · 193 hours before
Departed
NONE

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
53
Certificates
Flight instructor, Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
5,992 total · 483 in this make and model · 5,697 as pilot in command · 132 in the last 90 days · 39 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 10 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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