IFR (Instrument Flight Rules)
governing the procedures for conducting
instrument flight. Also a term used by pilots and
controllers to indicate type of flight plan.
"Weather conditions below
the minimums allowed for flight under visual
flight rules." (14 CFR part 1)
A welding striker, piezo sparker,
matches, or other means used to ignite the balloon
An occurrence other than an accident,
associated with the operation of an aircraft, which
affects or could affect the safety of operations.
The altitude shown on a
properly calibrated altimeter.
Inoperative Not functioning or not working.
Instructions for Continued Airworthiness
A manual published by an aircraft manufacturer
specifying procedures for inspection,
maintenance, repair, and mandatory replacement
times for life-limited parts.
"A device using an internal
mechanism to show visually or aurally the
attitude, altitude, or operation of an aircraft or
aircraft part." (14 CFR part 1) There are only
two instruments required in a hot air balloon:
vertical speed indicator (VSI) and altimeter.