The Reserve Parachute Repacking Course is the "engineering" core of pilot training. While XC and Acro flying are arts, repacking is the science of survival, where 100% precision is the only acceptable standard.
Here is the complete, systemic breakdown of the course according to international training standards:
1. Theoretical Foundations & Aerodynamics
Before a pilot touches the fabric, they must understand how the system functions:
Deployment Phases: The Pull $\rightarrow$ The Throw $\rightarrow$ Line Extension $\rightarrow$ Canopy Inflation.
Parachute Types: Round (PDA), Square/Cross, Steerable (Rogallo), and Triangular. Pros and cons of each regarding weight, opening speed, and pendulum stability.
Material Science: Types of nylon (Ripstop), porosity wear, and the detrimental effects of UV radiation and humidity.
2. Environmental Standards & Preparation
Airing-out Protocol: The parachute must be hung open (Air-out) for 12–24 hours in a dry, dark room. This removes the "fabric memory" and stickiness from being compressed.
Workspace Requirements: A clean surface at least 8–10 meters long. Prevention of static electricity (avoiding carpets).
Toolkit: Packing weights, specialized rubber bands, plastic clips, and the manufacturer’s specific manual.
3. Practical Steps of Training (Step-by-Step)
Phase I: Detailed Inspection
Canopy Check: The "light-through" method to find micro-perforations or tears.
Line Control: Searching for knots, friction burns, or chemical damage.
Bridle & Connection: Inspecting the attachment point to the harness—checking shackles or maillons for torque and structural integrity.
Phase II: Flaking (Symmetrical Layering)
Panel Separation: Perfectly straight alignment of each section according to the axis of symmetry.
Air Extraction: Correctly squeezing air out from between fabric layers so the parachute is compact but not "over-compressed."
Phase III: Line Organization
S-Folds (Figure-8s): Laying out lines so they deploy sequentially without requiring high energy.
Elastic Replacement: Discarding old rubber bands and using new, high-quality elastic bands (standard size).
Phase IV: Placement in the Deployment Bag (D-Bag)
Lines First Priority: Ensuring lines deploy before the canopy to prevent "line-overs" or entanglement.
Handle Connection: Correct attachment of the deployment handle to the D-bag (Handle-to-D-bag connection logic).
4. Critical Safety Checks
Extraction Force (Pull Test): After the parachute is placed in the harness, the pilot must measure the force required to extract it (Standard: 4–7 kg).
Compatibility Check: Does the volume of the parachute match the harness container size?
G-Force Simulation: Training on how to throw the reserve while the wing is in a rotation (spiral) and centrifugal force is hindering movement.
5. Certification & Responsibility
Logbook Entry: Every repack must be recorded in the pilot's and parachute's log/passport (Date, repacker’s name, signature).
Licensed Repacker Status: Upon completion, the pilot gains the authority to independently maintain their own survival equipment.
Summary
This course teaches the pilot that a reserve parachute is not just an accessory; it is their final chance for survival.