<a href="http://www.casa.gov.au/download/CAAPs/Airworth/252a_1.PDF" target="_blank">This link to CASA</a> will show the Civil Aviation Advisory Publication (CAAP) that deals with our ELT installation. CAR252 <a href="http://www.casa.gov.au/avreg/rules/1988regs.htm" target="_blank">here</a> deals with the legislation requiring fitting of automatic ELT's. Basically, since 31st July 1997, all Aust. registered aircraft have been required to carry an approved ELT, unless operating within 50 nm of base, an Ag operation, or minor permissions from CASA. The absolutely amazing exemption to this requirement are high capacity RPT and high capacity Charter aircraft (ie >38 seats or >4200kg payload). CASA's argument is that such aircraft will always be under full reporting or radar, so they would know if they went down, and where. Amazing stuff.
I use the Artec 110-6, which is the 6 axis version set up with G switches in all planes, giving better safety for helicopter ops., which may not trigger a normal four axis ELT. JetRangers I fit the ELT in the bay above the boot, with the antennae on the skin just aft of the engine bay door. BK117 it's fitted on the stub tail boom, aft of the stbd engine, under the exhaust, with the antennae on the skin directly above. 109, avionics bay, antennae on the fuselage directly outside. Artec 110-6 costs about $A2000, less for the 4 axis 110-4. The -4 can be mounted at an angle to help activation as a cheaper alternative, but in the long run, it pays to fork out for the -6.
(Edited to update price and CASA details)
[ 13 February 2002: Message edited by: John Eacott ]</p>