The July 2016 planning permission states:
From 31 March 2017, no AVRO RJ100 type aircraft (or any variant thereof) shall operate from the Airport at any time unless it has been demonstrated to and approved in writing by the local planning authority that noise from such Aircraft does not exceed the maximum noise levels specified in any approved scheme under Condition 18.
Any information if the required waiver has been granted?
If not, it looks as if Cityjet is in serious trouble then as they have no alternative aircraft type available. As far as I see it, Swiss has reacted by outsourcing flights to Helvetic's E190s.
Interesting sidenote: This will take away business from the likes of Jota and WDL that were the operators of choice with their 146s/Avros for short-term leases covering LCY routes. And this will also present airlines serving LCY with a dilemma when they need short term replacements for AOG or aircraft in maintenance. The only other aircraft that could be leased in is the Embraer 190 which, as far as I see it, is not offered by European ACMI-specialists.