Figure 1. United Express Embraer E175. Source: United Airlines.
The non-moving limits surprised manufacturers. They expected their new aircraft could fit under new rules, allowing heavier aircraft.
With the changed situation, we go through which aircraft fit the present rules and which does not. And what are the options, should the rules not change come 2020.
The present scope clause-compliant aircraft are the CRJ700 and CRJ900 from Bombardier and E175-E1 from Embraer.
These aircraft will be joined by the new MRJ70 from Mitsubishi Aircraft Corporation at the turn of the decade. The MRJ90 will arrive as well, but is too heavy for Scope-restricted airlines.
We use our performance model to dive into how these aircraft operate under present and future Scope clause rules.