B. Both APU tank bladders were found to be leaking. Upon disassembly, the Teflon was found to be pulled out from under the "O" ring at the top flange. A new method of assembly will be tried to prevent reoccurrence of this problem, meanwhile, one Teflon and one Vicon tank from spares were installed.

C. Number two blower was changed due to overheating caused by a broken "A" phase wire in the aircraft.

D. The lightweight tail cone was replaced by the tail cone with the experiment box.

B. The aft lower BLN microphone and panel and the blowout panel microphone were removed.

C. Experiment 25 was put in the tail cone box.

B. The aircraft was mated on 3 August.

C. Flight was canceled on 4 August due to failure of the pitch servo recorder just prior to taxi. The recorder was replaced.

D. Flight was delayed on 5 August due to failure of the inertial stabilizer heater prior to taxi. Flight was canceled due to failure of the radio when ready to start B-52 engines the second time.

E. While replacing the radio on 5 August, the elevator lid seal was found to have a serious leak. As a new seal was not readily available, X-15-1 was scheduled for 6 August.

B. The yaw damper kept disengaging during the flight. Post flight investigation revealed a bad yaw SAS servo.