Help Please

[TiffanySue]

1 across: they're used when surveying aircraft schedules (5-6) flight something?
11 across: Get in a tangle with a composer (5)
16 across: A saving grace ? (6)
7 down: suitable to take possession of (11)
3 down:Book Five in Christmas setting (5) Beginning with G I think!
12 down: Invite P.O.W to give an opinion (9)

Thanks in advance :-)

[sandyRoe]

16 thrift

[scorpiojo]

Flight plans

[cupid04]

11] ravel

[dannyk13]

11a.Ravel

[Frank97]

12d, Viewpoint

[scorpiojo]

7 appropriate

[scorpiojo]

What letters do you have for 3 please?

[dannyk13]

3d.No v el

[Mamyalynne]

3 Novel

[TiffanySue]

Novel is correct, thanks.
17 across: One of the ways in which urban life can be seen (6)
:15 across"Elementally disturbed, in the main (5-6)
11 The captain is one who can handle a rope (7)

[sandyRoe]

11 skipper

[Mamyalynne]

17 Street

[sandyRoe]

ocean storms?

[Captain2]

17 Street?

[TiffanySue]

Not ocean storms but thanks for your suggestion. Letters in first word are -t-r-

[Mamyalynne]

storm tossed ?

[scorpiojo]

Storm clouds?

[scorpiojo]

Scrap mine