CEN10LA529

NTSB accident investigation · Piper Aerostar 601P · Baraboo, WI · August 18, 2010

Accident · Serious injuriesLimited investigationFinal report
Date
August 18, 2010, 09:31 local (14:31 UTC)
Place
Baraboo, WI
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N601PPPiper Aerostar 601P
Weather
Visual (VMC) · Day
Status
Completed · report May 16, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20100818043959A
Case key
77245

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's diverted attention during an approach for landing that resulted in an altitude loss and impact with terrain.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Workload management: task allocationPersonnel issues › Task performance · PilotPiper AEROSTAR 601P: 1 caseAll aircraft: 12 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper AEROSTAR 601P: 1 caseAll aircraft: 1,310 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The airplane was on approach to the destination airport when the pilot noticed a differential reading between the left and right engine cylinder/exhaust temperatures. While preparing to land, he moved his seat back to be able to better view the gauges located on the right side of the instrument panel. While the pilot was recording the gauge indications on paper, the airplane's airspeed decreased, the sink rate increased, and the airplane descended and impacted trees and a corn field.

Factual narrative

On August 18, 2010, at 0931 central daylight time, a Piper Aerostar 601P, N601PP, received substantial damage on impact with terrain near Baraboo, Wisconsin. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 personal flight was not operating on a flight plan. The airline transport pilot sustained serious injuries. The flight originated from Reedsburg Municipal Airport (C35), Reedsburg, Wisconsin, about 0926 and was en route to Baraboo Wisconsin Dells Airport (DLL), Baraboo, Wisconsin. According to the Federal Aviation Administration, the airplane had the left cylinder temperature probes replaced at C35. The pilot was repositioning the airplane to DLL. While approaching DLL, the pilot noticed a differential reading between the left and right engine cylinder/exhaust temperatures. While preparing to land, the pilot moved his seat back so as to get a better view of the engine temperature gauges located on the right side of the panel. While he was recording the gauge indications on paper, the airspeed decreased, the sink rate increased, and the airplane impacted trees and a corn field about 1/2 mile north of the approach end of runway 19.

Aircraft

Registration
N601PP
Reported as
Piper Aerostar 601P
Category
Airplane
Serial number
61P07468063367
Engine
Lycoming IO-540, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Pilot
Registered owner
Pilot
Airworthiness certificate
Standard, Normal
Departed
C35 · Reedsburg, WI
Destination
DLL · Baraboo, WI
Airport
DLL · Baraboo Wisconsin Dells Airpor

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
88
Injuries
Serious
Certificates
Commercial, Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Multi-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
June 6, 2010
Seat
Left
Flight hours
24,285 total · 5 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 5 knots
Visibility
9 statute miles
Lowest ceiling
1,000 ft broken
Temperature
64 °F, dew point 61 °F
Altimeter
30.06 inHg
Observed at
MSN, 30 nm away

Docket · 1

The files NTSB released with the investigation on January 19, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 38 KB in all.

FAA reports on this event · 1

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