4.9 Fleet Substitutions

vAAirlines flights are to be completed in the aircraft listed on the schedule and may not be substituted. Fleet substitutions of the same aircraft family but different variant are not allowed regardless of similarity or real world operation (for example, an A319 flight must be flown in an A319 and may not be flown in an A320 or A321. Likewise, a 777-200 flight may not be completed in a 777-300 or 787-8). This also extends to different engine models of the same aircraft family (for example, the A321 may not be flown for an A321neo flight). Aircraft not in the fleet will not be accepted. The exception to this is only with written approval from the Senior Executive Staff on a rare and case-by-case basis.