This part of ISO 16049 specifies the design criteria and testing methods adequate to guarantee the ultimate load and operational dependability of cargo restraint strap assemblies with a typical rated ultimate tension load capability of 22250 N (5000 lbf), as used by the airline industry in order to restrain 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 and meeting the requirements of b) non-unitized 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.
The same restraint strap assemblies can also be used in other applications such as:
c) non-containerized (bulk loaded) baggage and cargo compartments, d) to ensure cargo restraint inside an airworthiness approved air cargo container.
NOTE The ultimate loads allowable on the attachment points available in most aircraft bulk compartments and inside most air cargo containers are significantly lower than 22250 N (5000 lbf). This results in the restraint arrangement’s ultimate load capability being dictated by the weakest element, i.e. the attachment points. Typical 22250 N ultimate load restraint straps will therefore be in excess of the requirements for such applications.
Compliance with this part of ISO 16049 provides one means of cargo restraint straps airworthiness approval by Civil Aviation Authorities under TSO / ETSO C-172, in addition to the other requirements therein.
ISO 16049-1:2013 Referenced Document
ISO 10254 Air cargo and ground equipment - Vocabulary*, 2016-07-01 Update
ISO 16049-2 Air cargo equipment — Restraint straps — Part 2: Utilization requirements and recommendations and lashing calculations*, 2020-01-10 Update
ISO 4117 Air and air/land cargo pallets; specification and testing