Daily Mail Cryptic 14298 Friday August 10th 2012

[bob561941]

5a Field of interest wherebSpanish replaces welsh S?h???
9a Terminal at hospital controlled by set of rules C?t???e
17a Drops regulation amended afterejecting a lout ????n
7d NASA expert's trickiest contest's unfinished amazingly ??c?e? S?????i??
27a US men wear it loosely interlocked ?Lord No ! N?????e

thanx

[factor-fiction]

reign maybe for 17a but we are not fully sure why (anag of regulation minus lout)

[factor-fiction]

cathode

[Sipowicz]

Sphere.
Cathode.
Reign.
Rocket scientist.
Necktie.

[Psybbo]

5 sphere

[baza]

sphere
cathode
reign
rocket scientist
necktie

[tommy.toon]

5A: SPHERE.... (W)here

[dannyk13]

5a. Sphere ( change w in where to sp)
9a. Cathode ( code aaound at h)
17a. Reign (Anagram of regulation after losing a lout)
7d. Rocket scientist (anagram)
27a. necktie ( anagram of interlocked after losing lord)