The Exeter pilot had to put on protective equipment during what's being called a sustained attack.
It happened on Saturday night.
A tweet from the National Police Air Service in the South West said the crew were able to identify the offender's location within 60 seconds.
Royal Clarence Hotel redevelopment to start
Work to start on historic city centre building
Road closures for Tar Barrels event
Organisers list road closures and residents-only access.
More redundancies at Devon shipbuilder
Redundancies could include managerial roles.
Devon's fire service change alarm response
Changes could save hundreds of thousands of pounds.
Exeter woman averts disaster at Greek airport
Exeter woman hailed 'a hero'.
Three arrested after unrest in Plymouth
Man stabbed with a screw driver
