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Hominid 0
But did the NWA weather people have access to information other than that provided by the FAA and National Weather Service? No, they did not. If anyone disagrees with this, then state where that information came from.
A key part of the turbulence plot system NWA had already developed (and fielded) was the acquisition of info regarding at least the more extreme weather directly from weather stations. Sowa arranged this to get info earlier so it could be more useful for hazard warnings. I haven't seen any specifics about what this advance info was. Point is, it came from weather bureau and FAA stations, but not via the "normal" disemination system.
Robert99 55
Good find Mr. Farflung.
I don't see that flight 307 arriving at Seattle, so it must have originated there. The plane could have been setting there for hours before scheduled takeoff (6:10pm).
I can't imagine that the airport would have been shut down much (if any) before 305 landed, like during all that time it was circling around before landing. It landed a bit before 6pm. A flight that had planned to leave at 6:10 could easily have gotten caught by the airport being closed.
The transcript has about 19.5 pages about communications between flight 305 and ground control. All the fiasco about refuelling and getting the passengers away from the plane. About a quarter of the way through is the first reference to any closure. It was that the south 3500' (apx 20 percent) of the "other" 16 was closed.
Another quarter of the way through the transcript there was more definite about closure. "The airport's closed at this time." Then, "305 the airport's closed and we have planes holding and we need to get a few off." Ground control wanted "to put an unlighted vehicle on each side of one six left" to make sure the runway was kept clear. There must have been a bit of backup. Shortly then, probably "Al" Lee said "I'm standing here now looking straight across towards our hangar and Alaska's. They're pumping out here right now." I think this means that planes were starting to leave.
Just estimating from the portion of the transcript, it appears that there was closure up until around 6:30pm. It's likely that Continental would not have started boarding passengers until the closure was lifted since they would have no idea how long the closure could last. I'd guess that it would be likely that the flight 307 would have gotten off around 7pm.
The hijacked airliner didn't take off until 7:36 PM PST (according to the FBI notes). Presumably, Bohan would not have taken off prior to about 7:40 PM PST.
Robert99 55
But did the NWA weather people have access to information other than that provided by the FAA and National Weather Service? No, they did not. If anyone disagrees with this, then state where that information came from.
A key part of the turbulence plot system NWA had already developed (and fielded) was the acquisition of info regarding at least the more extreme weather directly from weather stations. Sowa arranged this to get info earlier so it could be more useful for hazard warnings. I haven't seen any specifics about what this advance info was. Point is, it came from weather bureau and FAA stations, but not via the "normal" disemination system.
If the possibility of extreme weather suddenly surfaced, it would have been transmitted through all available means including sequence reports, voice messages on the VORTAC navigation system, and probably controller to pilot communications on the ATC system. Is there any evidence that this was done?
I don't see that flight 307 arriving at Seattle, so it must have originated there. The plane could have been setting there for hours before scheduled takeoff (6:10pm).
I can't imagine that the airport would have been shut down much (if any) before 305 landed, like during all that time it was circling around before landing. It landed a bit before 6pm. A flight that had planned to leave at 6:10 could easily have gotten caught by the airport being closed.
The transcript has about 19.5 pages about [edit: the first taped hour of] communications between flight 305 and ground control. All the fiasco about refuelling and getting the passengers away from the plane. About a quarter of the way through is the first reference to any closure. It was that the south 3500' (apx 20 percent) of the "other" 16 was closed.
Another quarter of the way through the transcript there was more definite about closure. "The airport's closed at this time." Then, "305 the airport's closed and we have planes holding and we need to get a few off." Ground control wanted "to put an unlighted vehicle on each side of one six left" to make sure the runway was kept clear. There must have been a bit of backup. Shortly then, probably "Al" Lee said "I'm standing here now looking straight across towards our hangar and Alaska's. They're pumping out here right now." I think this means that planes were starting to leave.
Just estimating from the portion of the transcript, it appears that there was closure up until around 6:30pm. It's likely that Continental would not have started boarding passengers until the closure was lifted since they would have no idea how long the closure could last. I'd guess that it would be likely that the flight 307 would have gotten off around 7pm.
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