Aircraft Accident/Incident Report

Los Lunas, New Mexico 87031
Saturday, March 18, 2000 9:50 MST

NTSB Narrative Summary Released at Completion of Accident

The St. Patrick's Balloon Rally weather briefing indicated calm surface winds. Winds aloft were greater than 20 knots, and the level was expected to drop later that morning. On a previous flight, the winds aloft had been negligible, then varied between southeasterly at 5 knots to westerly at 3 knots. On a later flight, the wind was 'variable and slow,' then became 'predominantly to the west at approximately 2to 3 knots.' The pilot landed the balloon in an open field 'unassisted and standing up.' The envelope was not deflated at that time because the wind was calm and the chase crew had not yet arrived. When the chase crew did arrive, 'the wind seemed to change direction to the southeast,' and wind speed 'increased dramatically...from the northwest at approximately 10 to 15 knots.' The balloon ascended about 15 to 20 feet. The balloon 'throat collapsed and [the pilot] could not burn to compensate for false lift.' He attempted to vent the envelope, but the top would not open because it was cold from standing on the ground. The false lift dissipated, the balloon struck the ground, and was dragged across the field.

NTSB Probable Cause Narrative

The pilot's decision not to deflate the envelope. A factor was the wind gust.

Event Information

Type of Event Accident
Event Date 3/18/2000
Event Day of the Week Saturday
Time of Event 950
Event Time Zone Mountain Standard Time
Event City LOS LUNAS
Event State NEW MEXICO
Event Country --
Zipcode of the event site 87031
Event Date Year 2000
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Unknown
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 856 Mountain Standard Time
Direction of event from weather observation facility (degrees) 5
Weather Observation Facility ID ABQ
Elevation of weather observation facility 5355
Distance of event from weather observation facility (units?) 25
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 9000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) -14
Wind Direction (degrees magnetic) 320
Variable Wind Indicator Unknown
Wind Speed (knots) 24
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 30
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 5416
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 3
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 112
NTSB Notification Source --
NTSB Notification Date Mar 18 2000 12:00AM
NTSB Notification Time 1315
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jan 10 2001 9:54AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4035T
NTSB Number DEN00LA062
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Adams
Aircraft Model A55S
Aircraft Series Identifier A55S
Aircraft Serial Number 139
Certified Max Gross Weight 1500
Aircraft Category Balloon
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 0
Number of Engines --
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 18 1999 12:00AM
Airframe hours since last inspection 35
Airframe Hours 593
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MARLIN W. MILNER
Aircraft Owner Street Address 400 ROBERT CT.
Aircraft Owner City RIO RANCHO
Aircraft Owner State NM
Aircraft Owner Country
Aircraft Owner Zipcode 87124
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code NONE
Departure City
Departure State
Departure Country
Departure Time 910
Departure Time Zone MST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 10 2001 12:27PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --