21.   The plane was just a dot in the sky.

22.   The plane was just a dot on the horizon.

23.   The plane was running low on fuel.

24.   The plane was unable to land due to strong winds and low cloud cover.

25.   The planes were on their way to neutralize any enemy submarines which might be lying in wait for us outside Bungo Strait.

26.   The steward opened the exit door when the plane was stationary and dropped the retractable stair ladder.

27.   These cargo planes are the modern equivalents of the tramp steamer.

28.   They said the plane had been on a spy mission and they were justified in shooting it down.

29.   Within seconds of hurtling down the runway the great plane was airborne.

30.   Within seventy minutes each plane has been unloaded, reloaded and winging its way to destination cities.