CHI94LA203

NTSB accident investigation · Piper PA-18 · Terre Haute, IN · June 19, 1994

Accident · FatalLimited investigationFinal report
Date
June 19, 1994, 14:31 local (18:31 UTC)
Place
Terre Haute, IN
Injuries
1 fatal, 1 serious
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N81TWPiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report February 14, 1995
Report
Approved by Office Director
FAA report
19940619015629A
Case key
9571

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-in-command's inadvertant stall of the airplane. A factor associated with the accident was the elevator trim position.

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 control - in flightTakeoff - initial climb
Stall - inadvertentPilot in commandCause
Elevator trim - improperPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The surviving second pilot reported he was conducting a simulated short field takeoff and the senior pilot-in-command was also on the controls. They were distracted during the takeoff roll when the second pilot discovered his seat belt was not fastened. He said he fastened it and continued the takeoff. The tower controller who witnessed the accident reported the nose of the airplane appeared to be excessively high. The airplane reached a maximum altitude of about 200 feet. The left wing dipped and the airplane impacted the terrain. Postaccident investigation revealed the elevator trim jack screw was in the full nose up position. Investigation disclosed no evidence of any preimpact mechanical malfunction.

Factual narrative

On June 19, 1994, at 1431 eastern daylight time, a Piper PA-18 airplane, N81TW, operated by American Trans Air Training Corporation, was destroyed during takeoff from the Hulman Regional Airport in Terre Haute, Indiana. The commercial pilot-in-command sustained fatal injuries. The front seat pilot, also a commercial pilot, sustained serious injuries. Both pilots were certified flight instructors employed by the operator. The flight was conducted under 14 CFR Part 91 in visual meteorological conditions. No flight plan was filed.

A employee of the operator said the flight was a maintenance check flight for the newly installed engine. The surviving second pilot said this was his first flight in this type of airplane and he was flying with the other pilot, a senior flight instructor, to gain experience. He said it was the operator's policy for instructors to fly five or six hours in each type of tailwheel-equipped airplane prior to instructing in that type.

The tower controller who witnessed the accident stated the airplane was cleared for an intersection takeoff on runway 5. During the initial climb, the nose of the airplane appeared to be excessively high. The airplane reached a maximum altitude of about 200 feet. The left wing dipped and the airplane impacted the terrain.

The wreckage was examined by an FAA airworthiness inspector. He stated in a written report that he discovered no evidence of preexisting airframe or engine malfunction. The elevator trim jack screw was found in the full nose up position.

During a telephone interview, the surviving second pilot stated he was flying the airplane and the other pilot was also on the controls. They were conducting a simulated short field takeoff as specified in the pilot's operating handbook. He said they were distracted during the initial portion of the take off roll when he discovered his seat belt was unfastened. He fastened it and continued the takeoff. At 35 to 40 knots he lowered the flaps and the airplane became airborne. He said he remembered feeling uncomfortable, probably due to the low airspeed, but could not recall other details of the accident.

During a telephone interview, an engineer employed by the Piper Aircraft Company said the airplane would be controllable with the elevator trim in the full nose up position. However, it would require a significant forward pressure on the stick to maintain a proper climb pitch.

An autopsy was performed by the Office of the Marion County Coroner, 40 S. Alabama St., Indianapolis, Indiana 46204.

The results of toxicological testing of the deceased pilot were negative for all tests except for morphine which was measured at .029 and 3.570 (ug/ml,ug/g) for blood and bile specimens respectively. Evidence of postaccident medical care was described in the autopsy report.

Aircraft

Registration
N81TW
Reported as
Piper PA-18
Category
Airplane
Serial number
18-3515
Airframe hours
3,722
Engine
Lycoming O-290-D2, 135 horsepower, reciprocating
Damage
Destroyed
Flight
Other work use · Part 91
Operator
American Trans Air Training Co
Registered owner
American Trans Air Training Co
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
100 hour · June 10, 1993 · 66 hours before
Airport
HUF · Hulman Regional, runway 5, 9,020 × 150 ft, asphalt

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
31
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Rear
Toxicology
Performed
Flight hours
1,293 total · 110 in this make and model · 998 as pilot in command · 43 in the last 90 days · 21 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 12 knots
Visibility
4 statute miles
Lowest ceiling
None
Temperature
99 °F, dew point 68 °F
Altimeter
30.00 inHg
Observed at
HUF

FAA reports on this event · 1

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