Possible Clues:

• Changed the plane for Jumbo
• The panel rudely ignored occupant of room?
• Animal with a tusk
• High plane, the jumbo
• Very large animal
• One doesn't forget medical department obtaining help moving American
• Huge beast from alien planet, he
• I've a trunk that's to be brought out of the plane
• Trumpeter's pale, then baroque
• Footballer's revolutionary workers' song offends trumpeter