Above left is a Catalan Eurocopter BK117 with an Indraero-Siren cargo hook model S1609-1-118A suspended
from a cable harness under the aircraft (photo by Julio Riberio/Iberian Spotters/Airliners.net).

On the right is a close-up of this very popular cargo hook, which can now be upgraded to model S1609-1-119A.