What is ISO 20291‑1 about?
ISO 20291‑1 is the first part of the multi-series on restraint slings for air cargo. ISO 20291‑1 specifies the design criteria and testing methods adequate to guarantee the ultimate strength and operational dependability of cargo restraint sling assemblies made of steel wire rope, with a 22,25 kN (5 000 lbf) rated ultimate load capability, as can be used by the airline industry to restrain on board civil transport aircraft during flight.
The cables specified in ISO 20291‑1 are intended exclusively for restraint purposes onboard aircraft, and not for use as lifting slings.
Who is ISO 20291‑1 for?
ISO 20291‑1 on restraint slings for air cargo is used by:
- Cargo assembly manufacturers
- Aircraft manufacturers
- Air travel regulatory authorities
- Cargo shipping companies
Why should you use ISO 20291‑1?
Before designing and sourcing restraint slings for air cargo, you would benefit from having specification guidelines provided in ISO 20291‑1. Sling or cable assemblies made of steel wire rope are intended to be used in lieu of cargo restraint straps meeting the requirements of ISO 16049-1, where straps inherent elongation under tension appears unadvisable for a given tie-down arrangement.
ISO 20291‑1 aims to standardize the design and testing requirements for air cargo restraint sling assemblies used as an alternate to restraint straps for tie-down of cargo on board civil transport aircraft.
ISO 20291‑1 provides requirements expressed in the applicable SI units, with approximate inch-pound units conversion between brackets for convenience in countries using that system.