CHI91LA244

NTSB accident investigation · Aerostar Raven 557A · Indianola, IA · August 4, 1991

Accident · No injuriesLimited investigationFinal report
Date
August 4, 1991, 08:20 local (13:20 UTC)
Place
Indianola, IA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N3621XAerostar Raven 557A
Weather
Visual (VMC) · Day
Status
Completed · report December 4, 1992
Report
Approved by Office Director
FAA report
19910804031299A
Case key
15141

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

Failure of the pilot to maintain altitude. Factors associated with the accident are complacency and diverted attention.

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 collision with objectCruise
Object - wire,transmission
Altitude - not maintainedPilot in commandCause
ComplacencyPilot in commandFactor
Diverted attentionPilot in commandFactor

Analysis

The accident balloon collided with powerlines while competing in an annual balloon competition. According to the pilot the balloon began to descend in close proximity to the powerlines. The basket struck the powerlines as he attempted to use the burner to climb over them.

Aircraft

Registration
N3621X
Reported as
Aerostar Raven 557A
Category
Balloon
Serial number
557A-3083
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Freedom Flight Inc.
Airworthiness certificate
Standard, Normal

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
37
Certificate
Private
Flight hours
149 total · 149 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 7 knots
Visibility
7 statute miles
Lowest ceiling
25,000 ft broken
Temperature
64 °F, dew point 63 °F
Observed at
DSM, 15 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.