Part Number
Primary Hook Load (NHEC)
2,200 lb. (998 kg)
Secondary Hook Load (HEC)
650 lb. (295 kg)
Typical Overhaul
5 years/1,000 hours
Unit Weight
14.2 lb. (6.4 kg)


HEC Dual Cargo Hook Kit

Product Number: 200-448-01

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Onboard Systems has developed a Human External Cargo (HEC) hook kit for the MD600N aircraft. Built around a dual installation of our 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.

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  • Complete Dual-Hook Solution:Comes with everything you'll need to upgrade your aircraft to a dual cargo hook system, including primary and secondary cargo hooks, attach point fittings, master and slave cylinders, external electrical release harnesses, and hardware.
  • STC Certified for HEC Missions:This cargo hook system meets the 14 CFR part 27 certification requirements for Human External Cargo (HEC).
  • Combined Dual Master Cylinder:User-friendly dual master cylinder combines the backup hydraulic release for both hooks along with the electrical release for the secondary hook into a single unit.
  • HEC Longline Options:Choose one of our HEC longlines, or use a longline approved by the local aviation authority.
  • Onboard Weighing System Option:Know the exact weight of your load! Our pin load cell replaces the attach bolt, eliminating extra linkage.
  • NHEC Load Options:With the Y-rope attached to both cargo hooks, the dual cargo hook system load limit is 800 lb. (363 kg) for both HEC and non-HEC (NHEC) missions. When an NHEC load is attached to only the primary cargo hook, the normal aircraft load limit applies.
  • TALON® LC Hydraulic Hook:Our hydraulic hook greatly increases load security by using a hydraulically activated release mechanism instead of a traditional manual release cable.



Hardware Notes

  • Does not include the MD Helicopters-supplied cyclic grip that houses the primary hook electrical release button.
Why Onboard

We maintain a large inventory of products, spare parts, and complete systems on site, allowing fast shipment of most items. While other manufacturers may put you on a waiting list for months, Onboard is able to turn around orders quickly — oftentimes the same day your payment is received. View our shipping policy here