B. The new MIT scanner and the MIT tailcone were installed.

C. The left hand wing pod camera was installed to look at the left hand lower speed brake.

D. New insulation panels were installed on the upper speed brakes. Instrumentation consisted of two T/C's on the left hand, seven T/C's, two static pressures, and one pitot probe on the right hand side.

E. Constant thickness insulation panels were installed on the lower speed brakes. Instrumentation on the panels was two T/C's right hand side and seven T/C's left hand side.

F. Engine 1O9 was replaced by engine 108, due to accumulation of small items which could not be fixed in the aircraft.

G. The right hand APU, S/N 14, was replaced by S/N 23 for time compliance.

H. Heaters were added to the wing pod cameras, powered from the B-52 heater buss. The film broke on flight 1-74 due to cold.

I. A doubler, placed over a stiffener in the engine compartment, was found to be cracked. The material used and the installation are suspected as the cause rather than loads. The doubler was replaced with a redesigned doubler.

J. The new increased strength nose gear was installed, the crescent shaped bellcrank for the scoop door linkage was modified to provide clearance for the new strut. The nose gear door rigging with the new strut was finished on 25 April.

K. The RAS P-Y valve was changed for excessive leakage.

B. Engine, APU, and BCS runs were accomplished on 22 April. The inertial system was operated during the second APU start to check operation of precision attitude on internal power.

C. On 23 April the right hand upper speed brake insulation panel was rebonded in the area of the rake.

D. The aircraft was mated to B-52, 008 on 25 April.

B. No flight problems occurred.