From BBC:
Flybe plane in emergency landing
An investigation is under way after an aircraft was forced to make an emergency landing in Jersey. The Flybe flight from London Gatwick was on its final approach when the pilot declared an emergency.
The alarm was raised on Friday evening when a flight attendant told the captain she could smell smoke in the aircraft.
The States fire service and the airport fire service were put on full standby, but the aircraft landed safely.
BBC