MIA08CA193

NTSB accident investigation · Cameron Balloons Z-150 · Sandown, NH · September 12, 2008

Accident · Serious injuriesData collectionFinal report
Date
September 12, 2008, 07:30 local (11:30 UTC)
Place
Sandown, NH
Injuries
2 serious, 5 uninjured
Damage
Minor damage
Phase of flight
Landing
Aircraft
N151TSCameron Balloons Z-150
Defining event
Landing: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report January 22, 2009
Report
Approved by Office Director
Parties
FAA/FSDO
FAA report
20080912849279A
Case key
68937

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 high winds during approach. Contributing to the severity of injuries was the passengers' improper landing preparation.

Findings · 1

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.

Wind: high windEnvironmental issues › Conditions/weather/phenomena · Effect on operationCameron Balloons Z-150: 1 caseAll aircraft: 112 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

According to the balloon pilot, he had checked several weather sources and sent up several helium balloons to check local winds. The flight path and speed of the test balloons confirmed the weather forecasts obtained earlier, and he saw no significant winds either on the ground or aloft. Early in the flight, the pilot noticed that the winds aloft had increased significantly. He descended to assess how close to the ground the increased winds were, so that he could start to plan for a landing. As the balloon came close to treetop level, he experienced increased wind speeds, and decided to land as soon as possible. The pilot prepared the passengers for a fast, hard, drag landing. As he approached the landing site, he allowed the balloon basket to drag through the top of trees in an effort to reduce speed. The pilot estimated that they decreased their horizontal balloon speed by 50 percent. Once clear of the trees, and over the landing site, he vented the balloon to facilitate a fast descent into the field. He informed the passengers that they would have a very hard landing and warned them to get ready for impact. Two passengers had squatted in the balloon to avoid contact with the treetops, and never returned to the correct landing position, as previously instructed by the pilot. Those passengers sustained serious injuries during the hard landing. The reported wind at a nearby airport, about 30 minutes prior to the accident, was from 190 degrees at 5 knots. Examination of the balloon revealed minor damage to the basket and no preimpact structural or mechanical failures.

Factual narrative

According to the balloon pilot, he had checked several weather sources and sent up several helium balloons to check local winds. The flight path and speed of the test balloons confirmed the weather forecasts obtained earlier, and he saw no significant winds either on the ground or aloft. Early in the flight, the pilot noticed that the winds aloft had increased significantly. He descended to assess how close to the ground the increased winds were, so that he could start to plan for a landing. As the balloon came close to treetop level, he experienced increased wind speeds, and decided to land as soon as possible. The pilot prepared the passengers for a fast, hard, drag landing. As he approached the landing site, he allowed the balloon basket to drag through the top of trees in an effort to reduce speed. The pilot estimated that they decreased their horizontal balloon speed by 50 percent. Once clear of the trees, and over the landing site, he vented the balloon to facilitate a fast descent into the field. He informed the passengers that they would have a very hard landing and to get ready for impact. Two passengers had squatted in the balloon to avoid contact with the treetops, and never returned to the correct landing position, as previously instructed by the pilot. Those passengers sustained serious injuries during the hard landing. The reported wind at a nearby airport, about 30 minutes prior to the accident, was from 190 degrees at 5 knots. Examination of the balloon by the Federal Aviation Administration found minor damage to the balloon’s basket, and no preimpact structural or mechanical failures.

Aircraft

Registration
N151TS
Reported as
Cameron Balloons Z-150
Category
Balloon
Serial number
6485
Airframe hours
148
Damage
Minor damage
Flight
Other work use · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 11, 2008
Departed
None · Salem, NH
Destination
None · Sandown, NH

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
Injuries
None
Certificate
Commercial
Last flight review
November 12, 2007
Flight hours
902 total · 149 in this make and model · 902 as pilot in command · 64 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 5 knots
Visibility
10 statute miles
Lowest ceiling
6,500 ft broken
Temperature
55 °F, dew point 52 °F
Altimeter
30.19 inHg
Observed at
MHT, 10 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.