Tom Swift and His Airline Express by Victor Appleton

Tom Swift had to think of many matters when he planned his airline express. He was aided, however, by his past experience in manufacturing aircraft and he had made many journeys above the earth and had been in many kinds of peril.

Not the least of these were fires, and Tom well realized the danger of ignition in a craft necessarily so frail as a flying machine heavier than air. So in building the _Falcon_, the _Eagle_, and the _Osprey_ he had taken into consideration this menace and had installed certain fire-fighting apparatus.