1.   The day begins at sunrise and an army of engineers check everything from the fuselage to the fuel valve.

2.   Besides oil being cheaper, it also made sense to replace teams of stokers with a few men at the controls of fuel valves.

3.   Concerns arose late last week when the supplier of the hydraulic assembly discovered a bent fuel injector valve with internal cracks.

4.   He was able to shut off the fuel valve.

5.   The first postponement was for a week because of a leaking fuel valve.

6.   Then close the fuel supply valve and the water supply valve.

7.   Turn off the fuel valve at the tank.

8.   After replacing the main fuel valve in the leaking engine, NASA had aimed for a Thursday launch.

9.   Cassens wants to make a plane that Lindbergh would recognize down to the fuel valves.

10.   Shuttle operations director Bob Sieck said technicians apparently left a valve to the hydraulic system open while replacing an engine fuel valve last weekend.