BALaddy
This article (from ATI) might explain why RJ100s have been on those routes. Another article also appeared the day before noting the wet-lease (from Flightline) of two 146s for the GVA and NCE routes from mid-December. Not clear though if these are two more beyond the two already operating as mentioned earlier in this thread.
Cheers
BA CityFlyer RJ85 loses panel on departure from Amsterdam
Victoria Moores, London (24Sep08, 16:20 GMT, 222 words)
British Airways (BA) CityFlyer has inspected its Avro RJ fleet after a one of its RJ85ERs lost a piece of fairing measuring 1.5m x 0.8m (4.9ft x 2.6ft) on departure from Amsterdam Airport earlier this month. The aircraft - a 2001 example, registered G-LCYB - was operating as flight BA8452 from Amsterdam to London City on 15 September with 46 passengers on board. A BA CityFlyer spokeswoman says: "On departure from Amsterdam an off-duty air traffic controller spotted something falling from the aircraft into woodland on the flightpath." She says the crew were alerted, but the instruments did not show any faults, therefore the aircraft continued to London City where it landed normally. On inspection the aircraft was found to be missing an upper wing fairing. The spokeswoman says: "It was a fairing which connects from the wing root to the body of the aircraft. It is not a working part and is not vital to the operation of the aircraft. "A full repair has now been completed and all other wing-to-body fairing panels on this aircraft have been inspected. The investigation has found the cause of the panel loss was down to the failure of the metal grommets that hold the panel in place." She says the investigation was carried out by BA CityFlyer and its maintenance provider, supported by BAE Systems.