SYNOPSIS
The aircraft was on a scheduled passenger flight from Almeria (LEAM), Spain, to Stansted (EGSS), United Kingdom. During the descent, at approximately 20,000 feet, the aircraft Commander became aware of an unusual smell in the cockpit. The Flight Crew donned their oxygen masks and declared a Mayday. Air Traffic Control facilitated an expeditious approach to EGSS, where a normal landing was performed. Throughout the event, there were no reports of unusual smells in the aircraft cabin.
