The wars of the future will not be fought on the battlefield or at sea. They will be fought in space, or possibly on top of a very tall mountain. In either case, most of the actual fighting will be done by small robots. And as you go forth today remember always your duty is clear: To build and maintain those robots.Prescience, thy name is Simpsons.
The condition lever on PPO-2 was in the fuel cutoff position when the switch from PPO-1 to PPO-2 occurred. As a result, the fuel was cut off to the UA engine when control was transferred to PPO-2.As described in the NTSB report, there is a full autopilot with waypoint capability, but the flights were still being performed with manual controls. An early version of the NTSB report that I read (but can not find online now) stated that the operators had stalled and spun the aircraft due to attempting to maintain altitude by pulling back on the yoke. Experienced pilots will point out that is wrong for two reasons, but I would add the third reason: why does the operator even have direct control of the elevator?
The pilot stated that, after the switch to the PPO-2 console, he noticed that the UA was not maintaining altitude, but he did not know why. He decided to shut down the ground data terminal (GDT) so that the UA would begin its lost-link procedure. This procedure called for the UA to autonomously climb to 15,000 feet above mean sea level (msl) and fly a predetermined course until contact could be reestablished. With no engine power, the UA continued to descend below line-of-sight (LOS) communications, and further attempts to reestablish contact with the UA were not successful.
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posted by evil_esto at 2:25 AM on October 23 [1 favorite]