BBC NEWS | Entertainment | Airport rules 'costing musicians':
Strict security measures at UK airports are having a "devastating impact" on musicians, says the Musicians' Union.
It says its members "are reporting significant lost earnings" because they are unable to take their instruments on board aircraft as hand luggage.
Many instruments are too fragile to be placed in the hold of an airliner, the union told the BBC News website.
But the Department for Transport says the security regulations will "be in place for as long as they need to be".
Under the rules, passengers are allowed one item of cabin baggage, which must be no larger than a laptop bag.
A spokeswoman at the Department for Transport said instruments would have to be checked into the hold until the security situation was downgraded.