From: "Philip H. Dye" [extracted from the Spring 1990, Arnold Air Letter] Actual regulations concerning operation of aircraft as set forth by the United States Air Service in 1920. (Submitted by AAS Maj. David Kane, Area III Directer of Publib Affairs) 1. Don't take the machine into the air imless you are satified it will fly. 2. Never leave the ground with the motor leaking. 3. Don't turn sharply when taxiiing. Instead of turning short, have someone lift the tail around. 4. Never get out of a machine with the motor running until the pilot relieving you can reach the engine controls. 5. Pilots should carry hankies in a handy position to wipe off goggles. 6. Riding on the steps, wings, or tail or a machine is prohibited. 7. In case the engine failes on takeoff, land straight ahead regardless of obstacles. 8. No machine must taxi faster than a man can walk. 9. Do not trust altitude instruments. 10. If you see another machine near you, get out of its way. 11. Before you begin a landing glide, see that no machines are under you. 12. Hedge-hopping will not be tolerated. 13. No spins on back or tail slides will be indulged in as they unnnecessarily strain the machine. 14. Pilots will not wear spurs while flying. 15. If an emergency occurs while flying, land as soon as you can.