Ever used professional cutting gear? There is no carry on bag I've ever seen that would fit the smallest petrol powered gear I've used. The blade alone is 300mm http://www.hirepool.co.nz/equipment-hire/s1/1/s3/61/FetchGro... However electric gear is smaller. If you can find a power point and a decent extension lead, run it to the pilot's door, avoid someone unplugging it, don't blow a fuse, don't get it too smokey to breath (bring respirator or get a passenger to assist by pouring water on the door - avoid the water/electrics issue as that can be dangerous. 1 minute of cutting can make so much dust/smoke you can't see your hand in front of your face). You'll be through that door in under an hour!