Onboard Systems' Md500 Dual Cargo Hook kit combined dual master cylinder (Onboard Systems)
Onboard Systems' dual cargo hook kit for the MD500 series has been STC-certified by the FAA for human external cargo (HEC) and has been built around a dual installation of Onboard's TALON LC Hydraulic Hook.
"This kit provides an STC-certified solution for a variety of CFR Part 133 external load missions, including HEC, high-value cargo transport, utility line work, short haul, and search & rescue," said Karsten Lemmon, vice president of sales and marketing for Onboard Systems. "The addition of a certified HEC cargo hook system to our growing line of external load equipment has been a top request from our customers for many years, and we are very excited to be able to offer this system on a commercial basis."
Onboard's newly-certified dual cargo hook system is approved for use on the MD 396D/E/F/FF and 500N helicopters. The company partnered with Aerocraft to develop and certify the dual-hook system. The companies are also developing dual cargo hook systems for the Bell 206L and 407 aircraft.
“We decided to start our HEC program with the MD500 because it is so popular with our utility line customers whose operations were greatly affected by the release of Special Airworthiness Information Bulletin (SAIB) SW-18-15 in May of 2018,” said Lemmon. “Our new dual hook system gives them a certified option for their missions. Future kits for other aircraft will assist those external load operators who require the extra load safety provided by a dual hook system.”
Onboard Systems' MD500 Dual Cargo Hook kit with Y-rope (Onboard Systems)
The kit features a user-friendly dual master cylinder, which combines the backup hydraulic release for both hooks along with the electrical release for the secondary hook into a single unit. For added safety, Onboard's certified HEC kits are comprised using TALON LC hydraulic cargo hooks to minimize the risk of inadvertent cargo releases caused by excessive movement during external load operations, which can activate an improperly-rigged manual release cable on a cargo hook system.