A condition wherein a
balloon is weightless and is neither ascending nor
Next Required Inspection
inspection, or 100-hour inspection, as
The time between the end of evening civil
twilight and the beginning of morning civil
twilight, as published in the American Air
Almanac and converted to local time.
A technique of adding
nitrogen gas to propane tanks to increase fuel
pressure. Used in place of temperature to control
propane pressure in hot air balloons during cold
Tests or inspections
that when properly performed, will not damage
the component or system being tested.
The state of having no pores or
openings which will not allow gas to pass
through. New hot air balloon fabric is nearly
NOTAM (Notice To Airmen)
containing information concerning facilities,
services, or procedures, the timely knowledge
of which is essential to personnel concerned with
The registered name for a polymer
fabric. Most balloon envelopes are made of nylon.