NCC.IDE.H.215 Emergency locator transmitter (ELT)

ELT BATTERIES Batteries used in the ELTs should be replaced (or recharged, if the battery is rechargeable) when the equipment has been in use for more than 1 cumulative hour, and also when 50% of their useful life (or for rechargeable, 50% of their useful life of charge), as established by the equipment manufacturer, has expired. The new expiry date for the replacement (or recharged) battery should be legibly marked on the outside of the equipment. The battery useful life (or useful life of charge) requirements of this paragraph do not apply to batteries (such as water-activated batteries) that are essentially unaffected during probable storage intervals.

TYPES OF ELTs AND GENERAL TECHNICAL SPECIFICATIONS

(a)Point (a) of AMC2 CAT.IDE.H.280 lists the applicable types of ELTs.

(b)To minimise the possibility of damage in the event of crash impact, the automatic ELT should be rigidly fixed to the aircraft structure, as far aft as is practicable, with its antenna and connections arranged so as to maximise the probability of the signal being transmitted after a crash.

(c)Any ELT carried should operate in accordance with the relevant provisions of ICAO Annex 10, Volume III and should be registered with the national agency responsible for initiating search and rescue or other nominated agency.

TERMINOLOGY

GM1 CAT.IDE.H.280 provides explanations of terms used in point NCC.IDE.H.215 and in the related AMC.

ADDITIONAL GUIDANCE The guidance provided in GM2 CAT.IDE.H.280 is also applicable to point NCC.IDE.H.215.