Halon

[AnthonyB]

Halon is still permitted for use on board aircraft, the extinguishers should be serviced (I can't remember if there are specific CAA requirements or BS5306-3 will do)

At 10 years it should be overhauled.

FFE still do these and you can find a local distributor via their site:
http://www.ffeuk.com/product-fext-cabin.html

Amerex can also supply halon extinguishers.

[stevfire2]

in light aircraft, extinguishers are signed off annually by a LICENCED aircraft engineer. all they do is weigh them and record the weight on a sticky label with their licence number and signiature. also cast a glance at pressure gauge if unit has one. no notice is taken of the units age, indeed many chipmunks and other ex military stuff still have 1950s graviner brass headed units. a couple of years ago, i was even given one of those pistol type units that one aircraft had been carrying! its a joke, they dont seem to be required to work to current standards.

[Clevelandfire 3]

What I would do is ask dotty about this cos he knows everything about everything but shhhh dont say I said that incase he phones my company and complains