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Old 4th January 2015, 20:26   #1
cyclewheel
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Default Question: What does squadron service mean?

Heard this term, and I'm not really sure what it means. Can somebody explain?

Sorry if this isn't the right place for this.
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Old 4th January 2015, 20:35   #2
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It's 'aircraft based' slang, really just means the majority of the ordered fleet (or sub-fleet) is in normal timetabled service right across the intended routes, and I'd say using normally rostered train crew.

Hence the opposite situation is that you might have a couple of early arrivals running around a subset of the network being used for initial training of staff, with only a small number of staff qualified to operate them.

As an example, you'd probably say that both the 458/5s and the 387s were not yet in 'squadron service'...

Oh, and welcome to the forums - this probably is the most suitable subforum for this type of question anyway.

Last edited by swt_passenger; 4th January 2015 at 20:39.
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Old 4th January 2015, 21:06   #3
cyclewheel
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Originally Posted by swt_passenger View Post
It's 'aircraft based' slang, really just means the majority of the ordered fleet (or sub-fleet) is in normal timetabled service right across the intended routes, and I'd say using normally rostered train crew.

Hence the opposite situation is that you might have a couple of early arrivals running around a subset of the network being used for initial training of staff, with only a small number of staff qualified to operate them.

As an example, you'd probably say that both the 458/5s and the 387s were not yet in 'squadron service'...

Oh, and welcome to the forums - this probably is the most suitable subforum for this type of question anyway.
Thanks for your help!
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Old 5th January 2015, 00:34   #4
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Quote:
Originally Posted by swt_passenger View Post
It's 'aircraft based' slang, really just means the majority of the ordered fleet (or sub-fleet) is in normal timetabled service right across the intended routes, and I'd say using normally rostered train crew.

Hence the opposite situation is that you might have a couple of early arrivals running around a subset of the network being used for initial training of staff, with only a small number of staff qualified to operate them.

As an example, you'd probably say that both the 458/5s and the 387s were not yet in 'squadron service'...

Oh, and welcome to the forums - this probably is the most suitable subforum for this type of question anyway.
Hmmm in squadron service in the RAF means in active service.

In that context both the 458/5s and the 387s are in squadron service (they carry passengers).
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Old 5th January 2015, 00:55   #5
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I am not sure if this is relevent but the unbuilt production design of the Advanced Passenger Train was to be called APT-S with Squadron being the ''s''.
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Old 5th January 2015, 14:25   #6
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I am not sure if this is relevent but the unbuilt production design of the Advanced Passenger Train was to be called APT-S with Squadron being the ''s''.
Are you sure about that?
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Old 5th January 2015, 14:35   #7
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Are you sure about that?
Yes, GrimsbyPacer is correct, that was certainly the case.
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Old 5th January 2015, 14:39   #8
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Yes, GrimsbyPacer is correct, that was certainly the case.
Yes, I recall that as well (APT-P was Prototype, not Passenger).

I suspect APT-S would have had the power cars at the ends (or at one end) to avoid the impractical block in the middle.

Neil
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Old 5th January 2015, 14:40   #9
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I thought it was ATP - Service

you learn something new every day.
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Old 5th January 2015, 16:24   #10
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There's also APT-U (better known as the IC225). I have no idea what the "U" stood for. "Untilting", maybe?
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Old 5th January 2015, 16:38   #11
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There's also APT-U (better known as the IC225). I have no idea what the "U" stood for. "Untilting", maybe?
No, the ''U'' in APT-U meant Ultimate. The Experimental is ''E'' also.

Edit: an APT-POP also existed, it was an unpowered 3-car test set.
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Last edited by GrimsbyPacer; 7th January 2015 at 14:18. Reason: I know it's late but I wanted to complete APT list.
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Old 5th January 2015, 19:33   #12
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Quote:
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I suspect APT-S would have had the power cars at the ends (or at one end) to avoid the impractical block in the middle.

Neil
Going off topic somewhat, but you're correct. APT-S would have had a power car at one end of the train, nine passenger trailers and a driving van trailer (idenitifed as such as early as 1981) at the other end; not dissimilar to the formation of the IC225s, but retaining vehicle articulation and tilt.

The APT-U design re-introduced two power cars, one at each end of the train sandwiching ten passenger trailers, but also dropped vehicle articulation.
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Old 5th January 2015, 19:43   #13
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Here is some more info about the formations of the APT for you all to have a look at:

http://www.apt-p.com/APTConfigurations.htm
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Old 5th January 2015, 20:02   #14
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Cheers all.

Neil
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Old 5th January 2015, 21:14   #15
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Quote:
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Yes, I recall that as well (APT-P was Prototype, not Passenger).Neil
Wasn't APT-E given to the original gas-turbine unit (with the "E" standing for Experimental) and APT-P given to the production units (with the "P" standing for Production)
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