Normal flight
Normal flight means the flight of a properly performing vehicle whose real-time vacuum instantaneous impact point does not deviate from the nominal vacuum instantaneous impact point by more than the sum of the wind effects and the three-sigma guidance and performance deviations in the uprange, downrange, left-crossrange, or right-crossrange directions.
Source
14 CFR § 401.7
Scoping language
For the purposes of this chapter unless otherwise excepted, the following definitions apply: