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【范围】
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1.1 Purpose
1.1.1 This Aerospace Recommended Practice aims at providing general utilization guidelines and calculation methods
adequate to guarantee the effectiveness and ultimate load strength of tie-down / lashing arrangements performed
to restrain cargo on board civil transport aircraft during flight:
a. cargo loaded and tied down onto airworthiness approved air cargo pallets, themselves restrained into aircraft
lower deck, main deck or upper deck cargo systems meeting the restraint requirements of air cargo pallets
approved in accordance with NAS3610 or AS36100A, or
b. additional tie-down on aircraft structure when necessitated by pallet maximum gross mass or CG, or
c. individual pieces of cargo, or pieces of cargo placed onto an unrestrained (“floating”) pallet into either lower
deck, main deck or upper deck containerized cargo compartments of an aircraft, or
d. individual pieces of load loaded in non containerized (bulk loaded) baggage or cargo compartments.
1.1.2 This ARP aims at providing industry recognized means of complying with Airworthiness Authorities general
regulations applicable to load securing on board civil transport aircraft ( see 14 CFR Parts 25 and 121, in 2.1,
Applicable documents ), and aircraft manufacturers Authority approved Weight and Balance Manuals for each
aircraft type as specified therein. It is not the intent of this ARP to specify when restraint straps should be used,
but how they should be used. It shall not, under any circumstance, supersede the requirements of any of these
documents, which shall take precedence at all times.
1.1.3 This ARP therefore provides recommended practical means of compliance with flight safety objectives, intended
to be available as a common base for carriers as well as their airport handling agents when establishing their own
in-house publications and staff training programs.
1.1.4 This ARP is not intended to apply to cargo restraint on board military transport aircraft, and does not take into
account any specific criteria for military aircraft. Nothing, however, precludes it being used for guidelines in this
case, it pertaining to the military operator to identify and implement any additional applicable criteria.
1.2 Field of Application
1.2.1 This International Standard applies to cargo tie-down / lashing arrangements using exclusively air cargo restraint
straps conforming to Aerospace Standard AS5385C, Cargo Restraint Straps – Design Criteria and Testing
Methods, referred to by TSO C172. Its general recommendations may be used for tie-down arrangements using
other means ( e.g. steel cables, rope, other types of straps ), but under the user’s responsibility as to their
adequacy and the strength calculations required.
NOTE 1: The use of chains or other rigid devices for tie-down onto civil transport aircraft floor tracks is generally
not recommended, due to the possibility of generating excessive stresses in the aircraft structure,
except where explicitly approved in the manufacturer’s Authority approved Weight and Balance Manual.
Any Weight and Balance Manual restrictions shall be strictly complied with.
NOTE 2: Where tie-down is performed onto aircraft structure as per 1.1.1 (b) or (c) above, additional restrictions
may be stated in the aircraft's Authority approved Weight and Balance Manual, and shall be complied with.
1.2.2 This International Standard applies to primary cargo restraint ensured onto a pallet or the aircraft structure
exclusively by straps. It does not apply to the use of straps, e.g. as protection against cargo shifting, in addition to
an approved pallet net. In such a case, refer to 6.2, Straps complement, of ARP5486, Air Cargo Pallets –
Utilization Guidelines.
1.2.3 Operating instructions shall be established by the aircraft operator, under operating control of his reporting
Authority. The operating instructions shall ensure compliance with the general airworthiness requirements and
the applicable aircraft Weight and Balance Manual, and should incorporate the requirements of the present ARP,
or equivalent industry standard (see 2.2, Reference documents).strRefField
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