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COMMISSION REGULATION (EU) No 965/2012
of 5 October 2012
laying down technical requirements and administrative procedures related to air operations pursuant to Regulation (EC) No 216/2008 of the European Parliament and of the Council
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CAT.IDE.H.310 Additional requirements for helicopters conducting offshore operations in a hostile sea area
Helicopters operated in offshore operations in a hostile sea area, at a distance from land corresponding to more than 10
minutes flying time at normal cruising speed, shall comply with the following:
(a) When the weather report or forecasts available to the commander indicate that the sea temperature will be less than
plus 10 °C during the flight, or when the estimated rescue time exceeds the calculated survival time, or the flight is
planned to be conducted at night, all persons on board shall wear a survival suit.
(b) All life-rafts carried in accordance with CAT.IDE.H.300 shall be installed so as to be usable in the sea conditions in
which the helicopter’s ditching, flotation and trim characteristics were evaluated in order to comply with the ditching
requirements for certification.
(c) The helicopter shall be equipped with an emergency lighting system with an independent power supply to provide a
source of general cabin illumination to facilitate the evacuation of the helicopter.
(d) All emergency exits, including crew emergency exits, and the means for opening them shall be conspicuously marked
for the guidance of occupants using the exits in daylight or in the dark. Such markings shall be designed to remain
visible if the helicopter is capsized and the cabin is submerged.
(e) All non-jettisonable doors that are designated as ditching emergency exits shall have a means of securing them in the
open position so that they do not interfere with occupants’ egress in all sea conditions up to the maximum required
to be evaluated for ditching and flotation.
(f) All doors, windows or other openings in the passenger compartment assessed as suitable for the purpose of
underwater escape shall be equipped so as to be operable in an emergency.
(g) Life-jackets shall be worn at all times, unless the passenger or crew member is wearing an integrated survival suit that
meets the combined requirement of the survival suit and life-jacket.
CAT.IDE.H.315 Helicopters certified for operating on water — miscellaneous equipment
Helicopters certified for operating on water shall be equipped with:
(a) a sea anchor and other equipment necessary to facilitate mooring, anchoring or manoeuvring the helicopter on water,
appropriate to its size, weight and handling characteristics; and
(b) equipment for making the sound signals prescribed in the International Regulations for Preventing Collisions at Sea,
where applicable.
CAT.IDE.H.320 All helicopters on flights over water — ditching
(a) Helicopters shall be designed for landing on water or certified for ditching in accordance with the relevant
airworthiness code when operated in performance class 1 or 2 on a flight over water in a hostile environment at
a distance from land corresponding to more than 10 minutes flying time at normal cruise speed.
(b) Helicopters shall be designed for landing on water or certified for ditching in accordance the relevant airworthiness
code or fitted with emergency flotation equipment when operated in:
(1) performance class 1 or 2 on a flight over water in a non-hostile environment at a distance from land
corresponding to more than 10 minutes flying time at normal cruise speed;
(2) performance class 2, when taking off or landing over water, except in the case of helicopter emergency medical
services (HEMS) operations, where for the purpose of minimising exposure, the landing or take-off at a HEMS
operating site located in a congested environment is conducted over water;
(3) performance class 3 on a flight over water beyond safe forced landing distance from land.