For what it's worth, and being the ultra-sad individual that I am (I still remember the stuff I crammed for my air law exam), the relevant AIC is AIC 1/2004 (Pink 62). CAP756 (which says the same sorts of things, but in more detail) is also worth a read: see
http://www.caa.co.uk/docs/33/CAP756.PDF
Bluetooth is apparently ok, due to it being very short range and low power (best keep that high-power bluetooth dongle unplugged, then). I remember not so long ago when commercial flights didn't mind you using a laptop in cruise, but got all upset if you used the CD-ROM in said laptop. Wi-fi is ok, so long as it's been 'certified' in some way.
Incidently, cellphone technology approx. 8 years ago (the last time I looked at it in any detail) allowed tracking of both the SIM card and the phone, so long as the SIM was in a powered phone and the relevant phone was powered (even if it didn't have a SIM in it - you should be able to make emergency calls without a SIM). Both had unique IDs, and triangulation was easily possible (and being done) back then; tracking the SIM simply required looking at a different bit of the transmitted info. While it is entirely possible that this has changed since then, I doubt it.