Neutral Buoyancy
A condition wherein a
balloon is weightless and is neither ascending nor
descending.
Next Required Inspection
An annual
inspection, or 100-hour inspection, as
appropriate.
Night
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. |
Nitrogen Charging
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
weather.
Non-Destructive Testing
Tests or inspections
that when properly performed, will not damage
the component or system being tested.
Nonporous
The state of having no pores or
openings which will not allow gas to pass
through. New hot air balloon fabric is nearly
nonporous. |
NOTAM (Notice To Airmen)
A notice
containing information concerning facilities,
services, or procedures, the timely knowledge
of which is essential to personnel concerned with
flight operations.
Nylon
The registered name for a polymer
fabric. Most balloon envelopes are made of nylon.
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