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b) See also paragraphs 10.3.2 and 12.4.2 for additional details.
The following life raft requirements are recommended:
a) Helicopters having a seat capacity for 10 or more passengers should have two life rafts; each should be certified for 50% overload to enable any one life raft to be used by all occupants.
b) Helicopters having a seat capacity for 9 or less passengers should have a minimum of one life raft certified to carry all occupants.
c) Where available by helicopter model, externally mounted life rafts are preferred over inter-nally mounted.
12.5.3 Life jackets
Approved types
Only those life jackets that are manufactured to an aviation authority approved TSO and certifi-cated for use by the regulatory authority should be used. The following points should be noted:
a) Permanently buoyant vests should not be worn or provided to occupants on aircraft flights because these types significantly hinder egress from a submerged helicopter or aeroplane. This is the same reason why life jackets should never be inflated until well outside of the helicopter or aeroplane cabin.
b) Where approved by local authority, life vests with crotch strap designs are preferred over those without.
c) Rebreather systems for life vests and/or exposure suits which are designed to provide addi-tional time for underwater egress may be considered for use, but a suitable training pro-gramme will need to be established. These systems should have appropriate approval for use by the regulatory authority.
d) Some exposure suits do not have integral life vests and may lack adequate sustained floata-tion, and a separate life vest may need to be worn externally. A crotch strap may be neces-sary for adequate security of these separately worn vests. The manufacturers and regulatory authority should be consulted as necessary for clarification.
Constant wear life jackets
For operations where the vests are routinely worn, such as offshore helicopters, they should be cov-ered with a durable fabric to reduce damage from constant handling. Life jackets manufactured to an approved TSO for constant wear life jackets are preferred.
Helicopters & float plane life jackets
a) For all helicopters and floatplanes over-water flights beyond gliding distance of land, the life jacket should be worn in a readiness condition.
b) Pilot life vests for offshore helicopters or remote areas should contain an emergency radio (See also paragraph 12.4.2)
Aeroplane Life Jackets
For single-engine aeroplanes, and multi-engine aeroplanes that cannot maintain altitude on one engine, conducting operations over water beyond gliding distance of land, life jackets should be worn by all occupants.
For all other aeroplane extended over water operations, life jackets will be available and readily accessible for use by passengers and crew in the event of a ditching.
Night flights – life jacket additional requirement
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飞机管理指导方针 Aircraft management guidelines(67)
