CHI94LA237

NTSB accident investigation · Piper PA-18-135 · Butte Des Mort, WI · July 20, 1994

Accident · No injuriesLimited investigationFinal report
Date
July 20, 1994, 16:35 local (21:35 UTC)
Place
Butte Des Mort, WI
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N9843QPiper PA-18-135
Weather
Visual (VMC) · Day
Status
Completed · report February 14, 1995
Report
Approved by Office Director
FAA report
19940720018949A
Case key
9601

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

A delayed remedial action by the instructor. A factor in this accident was a proper airspeed not being attained by the dual student.

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.

Dragged wing,rotor,pod,float or tail/skidApproach - vfr pattern - final approach
Emergency procedure - simulatedPilot in command(cfi)
Airspeed - not obtainedDual studentFactor
Remedial action - delayedPilot in command(cfi)Cause
Touchdown - uncontrolledPilot in command(cfi)
Terrain condition - water

Analysis

The instructor said he was having the student practice power off approaches when he simulated an engine failure. The student did not pitch the airplane's nose down to attain the proper glide speed according to the instructor. The instructor told the student to pitch the nose down twice before taking control of the airplane. As he took control of the airplane, the instructor said he applied full power. The airplane's left wing collided with the water as the power was being applied. The aircraft turned about 180 degrees but remained upright on the floats with damage to the left wing.

Factual narrative

On July 20, 1994, at 1635 central daylight time (cdt), a Piper PA-18-135, N9843Q, registered to Victor Ahlquist of Appleton, Wisconsin, was substantially damaged during a simulated emergency landing on Lake Butte des Mort, Butte des Mort, Wisconsin. The instructional flight had a seaplane flight instructor and student on board. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 flight was not operating on a flight plan. The instructor pilot and student reported no injuries. The flight departed Butte des Mort, Wisconsin, at 1550 cdt.

According to the instructor's written statement, he simulated a loss of power during a gliding approach to landing. He said the simulation began at 250 feet above the water. The student did not, according to the instructor, obtain a safe gliding speed after the loss of power simulation. The instructor said he told the student to lower the airplane's pitch attitude twice before he took control of the airplane. He stated the airplane was low and slow when he took control.

The instructor said he applied full power after taking control. The airplane's left wing collided with the water shortly after the instructor took control. He said the airplane turned about 180 degrees after the wing struck the water.

Aircraft

Registration
N9843Q
Reported as
Piper PA-18-135
Category
Airplane
Serial number
18-3524
Airframe hours
2,599
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Pro-Aire Training
Registered owner
Victor Ahlquist
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · March 1, 1994 · 83 hours before

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
32
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine sea, Multi-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Rear
Flight hours
2,905 total · 60 in this make and model · 2,770 as pilot in command · 110 in the last 90 days · 30 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 63 °F
Altimeter
29.00 inHg
Observed at
OSH, 20 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.

Other investigations on N9843Q · 1

Matched to the same aircraft by N-number and date.