More than 75 firefighters are tackling a blaze at a hangar at NorwichInternational Airport, which contains two aircraft filled with more than 5,000litres of aviation fuel.
Eight fire crews, a water carrier, aerial ladder, control and welfare units aretackling the fire, which is spreading to the roof of the hangar.
The hangar is used by KLM Engineering and Air Livery, and is located onLiberator Road, with a number of shops and other airport hangars nearby.
Greg Preston, the incident commander for the fire service, said that neitheraircraft had been damaged, adding that firefighters were attempting to prevent the blaze from spreading to the aircraft.
Firefighters were first alerted to the blaze at 9.43am, but confirmed thatthere are no reports of any casualties.
A spokesman confirmed the fire is not being treated as suspicious.
A spokesman for Norwich International Airport said: "The fire is being controlled by the fire services, and is taking place in an Air Livery hangar. The airport and services are not affected."