The Lowering Piggyback Method is a rope rescue technique used to maintain continuous descent control while safely bypassing a knot in the main line. This method incorporates a secondary descent control system—known as the piggyback—and provides a controlled process for transferring loads when a knot prevents further lowering.
Ideal for systems using the Clutch, MPD, Maestro, or similar devices, the method ensures redundancy and smooth transitions during technical rescue operations.
Step-by-Step Guide to the Lowering Piggyback Method
Step 1: Setup and Initial Lowering
Begin lowering the load until the knot is positioned just above the primary descent device (e.g., Clutch). Pause the operation and rotate the Clutch handle to ‘Stop’ to lock the rope.
Next, attach a secondary descent control system (the piggyback) to a solid anchor. Connect this device to the main line using a prusik hitch, removing as much slack as possible from the piggyback system to prepare for the load transfer.
Step 2: Transfer the Load to the Piggyback System
Release the rope from the primary descent device. The load now shifts onto the piggyback system, which temporarily becomes the main lowering device.
With the load safely held, reposition the knot so that it lies below the primary device. Turn the Clutch handle back to ‘Stop’, as it will be idle during this phase.
Step 3: Transfer the Load Back to the Main Line
Using the piggyback system, lower the load gradually until tension is restored onto the main line and picked up by the Clutch.
This transition must be done slowly and carefully to avoid instability or slack-induced drops. Monitor all systems and communicate during the handoff.
Step 4: Dismantle the Piggyback System
Once the Clutch is fully reloaded with the system tension, pull slack into the piggyback, then fully disconnect it from the main line.
Ensure that all components are removed and that the rope is clear of interference. Resume lowering with the Clutch now that the knot has been safely passed and removed from the line’s working section.
Advantages of the Lowering Piggyback Method
- Knot Management Efficiency: Allows a clean, controlled bypass of knots during descent operations.
- Enhanced Load Control: Adds safety by distributing load temporarily to a redundant device.
- Device Versatility: Compatible with a wide range of descent control devices.
This method is highly effective in NFPA 1006-aligned training environments and real-world rescue missions where system control and uninterrupted operation are critical. Mastering the Lowering Piggyback Method equips rope technicians with a practical and adaptable tool for overcoming midline obstacles while maintaining full operational flow.
Peace on your Days
Lance
