Military Freefall Operations

Military freefall parachute systems are sophisticated equipment designed for reliability, controllability, and deployment at various altitudes and speeds. Understanding your equipment is essential for safe and effective MFF operations.

Main Canopy Systems:

• MT-1XX Series: Military ram-air canopies with 7 cells; rectangular planform
• Wing Loading: Typically 1.0-1.3 lbs/sq ft for military canopies
• Glide Ratio: Approximately 3:1 (forward 3 feet for every 1 foot of descent)
• Deployment Altitude: 3,000-4,000 feet AGL for HALO; immediately for HAHO

Reserve Parachute:

• Separate container mounted on back or front
• Deployed by separate ripcord handle (red, distinct from main silver)
• Used for main malfunctions or entanglements
• Inspected and repacked by certified rigger every 180 days

AAD (Automatic Activation Device):

• Electronic altimeter that automatically deploys reserve
• Activates if jumper reaches activation altitude without deployment
• Critical safety backup; armed before every jump
• Altitude setting varies by operation (typically 750-1,000 feet)

Container System:

• Harness with leg straps, chest strap, and shoulder straps
• Main container (bottom) and reserve container (top or front)
• Ripcord handle for manual main deployment
• RSL (Reserve Static Line) connects main to reserve for automatic reserve deployment if main cutaway

Helmet and Oxygen:

• Pro-Tec or similar impact-resistant helmet
• Visor or goggles for eye protection at speed
• Oxygen mask for jumps above 15,000 feet
• Altimeter (visual and audible) on wrist or helmet

Equipment Checks:

Thorough pre-jump equipment inspection includes: 3-ring release system, RSL routing, AAD status, canopy condition, line stowage, and proper harness adjustment. Equipment malfunctions at terminal velocity are unforgiving.

Stable freefall body position is the foundation of military freefall. Instability creates difficulty tracking other jumpers, increases collision risk, and complicates canopy deployment. MFF students spend significant time mastering the basic freefall position.

Basic Freefall Position (Box/Track):

• Head: Looking forward, not up or down; neutral position
• Arms: Extended 90 degrees at sides, elbows slightly forward
• Torso: Arching back slightly; chest presented to relative wind
• Legs: Bent at knees, spread shoulder-width apart
• Symmetry: Balanced position creates stability; asymmetry causes turns

Relative Wind Concept:

The relative wind is the airflow you feel due to your descent. At terminal velocity (~120 mph belly-to-earth), the relative wind comes from directly below. Your body position must present a stable platform to this wind to maintain control.

Turns:

• Forward: Lower one arm, raise opposite leg
• Backward: Raise one arm, lower opposite leg
• Left/Right: Asymmetric arm or leg position
• Rotation Rate: Controlled; fast rotations cause disorientation

Tracking:

Tracking is controlled forward movement while in freefall. Used to create separation from other jumpers before deployment or to maneuver toward a target. Achieved by de-arching slightly and presenting arms and legs in a wing-like position.

Fall Rate Control:

• Slow Fall: Maximum surface area — spread limbs wide, arch back
• Fast Fall: Minimum surface area — streamline body, arms in, legs straight
• Matching: Adjust fall rate to stay with group

Instability Recovery:

If you become unstable (tumbling, spinning), the recovery procedure is: relax, assume neutral position, and let aerodynamic forces stabilize you. Fighting instability usually makes it worse. Deploy only when stable.

Collision Avoidance:

At terminal velocity, collision with another jumper is catastrophic. Maintain visual contact with jumpers around you, use hand signals to communicate, and track away before deployment. Minimum separation before deployment: 500 feet vertical or significant horizontal distance.

Once your canopy is deployed, the freefall phase is complete but the descent phase requires equal skill. Canopy control includes navigation to the landing area, traffic pattern execution, and safe landing technique. Precision landing is especially critical for HAHO operations.

Canopy Flight Controls:

• Toggle Steering: Pulling one toggle turns the canopy in that direction
• Flare: Pulling both toggles simultaneously raises the nose and reduces descent rate
• Rear Risers: Emergency steering if toggles malfunction
• Front Risers: Increases descent rate for faster approach

Traffic Pattern:

• Downwind Leg: Parallel to landing direction, downwind
• Base Leg: Perpendicular to landing direction
• Final Approach: Into the wind, aligned with landing target
• Altitude Awareness: Plan legs based on altitude and wind

Landing Technique:

1. Approach into the wind at appropriate speed
2. At 10-15 feet, begin flare by pulling toggles to chest
3. Feet and knees together, prepare to absorb impact
4. Touch down softly, collapse canopy immediately
5. If landing is hot (fast), execute PLF (Parachute Landing Fall)

PLF (Parachute Landing Fall):

• Prepare to contact ground with balls of feet
• Roll to the side — calf, thigh, hip, back
• Keep chin tucked to chest
• Distribute impact across large muscle groups
• Practice until automatic; injuries occur when PLF is forgotten

HAHO Gliding:

HAHO operations require canopy flight covering 25+ miles from release point to landing zone. This demands:

• Precise navigation using GPS, compass, and landmarks
• Altitude management — maintain optimal glide path
• Wind compensation — calculate drift and crab into wind
• Group coordination — maintain visual on team members
• Oxygen management — monitor supply during long descent

Emergency Procedures:

• High Malfunction: Cutaway main, deploy reserve (above decision altitude)
• Low Malfunction: Deploy reserve immediately (below decision altitude)
• Two-Canopies-Out: Land with both canopies if safely flying; cutaway main if entangled
• Tree Landing: Avoid if possible; if unavoidable, prepare for impact and protect face
• Water Landing: Release chest strap and RSL before impact; swim clear of canopy

HALO and HAHO represent the operational employment of military freefall. These high-altitude techniques enable SF infiltration into areas inaccessible by other means. Understanding the planning, preparation, and execution of HALO/HAHO missions is essential for SF operations.

HALO Operations (High Altitude, Low Opening):

• Altitude: Exit 15,000-35,000 feet MSL
• Freefall Time: 60-120 seconds depending on altitude
• Deployment: 3,000-4,000 feet AGL
• Advantages: Short canopy flight time, reduced drift, minimal time under canopy
• Disadvantages: Longer freefall increases hypoxia risk; tight grouping required

HAHO Operations (High Altitude, High Opening):

• Altitude: Exit 15,000-35,000 feet MSL
• Deployment: Immediately or within seconds of exit
• Glide Distance: 25-40+ miles depending on winds and altitude
• Advantages: Standoff infiltration; aircraft remains far from target
• Disadvantages: Long exposure under canopy; oxygen duration limits

Pre-Breathing Protocol:

To prevent decompression sickness (the bends) at high altitude, jumpers pre-breathe 100% oxygen:

• Above 20,000 feet: 30 minutes pre-breathe minimum
• Above 25,000 feet: 45-60 minutes pre-breathe
• Continuous oxygen from pre-breathe through descent to safe altitude
• No smoking, alcohol, or scuba diving 24 hours before jump

Oxygen Equipment:

• Mask: MBU-12 or equivalent oxygen mask
• Regulator: Diluter-demand for cabin altitude up to 34,000 feet
• Bottle: 100% oxygen supply for pre-breathe and jump
• Monitoring: Pulse oximeter checks during pre-breathe and climb

Cold Weather Protection:

At high altitude, temperatures reach -30°F to -50°F. Specialized equipment includes:

• Insulated jumpsuit or thermal layers
• Heated gloves or heavy insulated gloves
• Full face protection to prevent frostbite
• Windproof outer layer

Group Procedures:

• Exit in tight stick from aircraft door
• Maintain visual contact during freefall
• Track away from group before deployment
• Rally at pre-briefed point on ground
• Account for all jumpers and equipment

Mission Planning Considerations:

• Winds at all altitudes (critical for HAHO drift)
• Drop zone selection and identification
• Emergency bailout options
• Weather minimums and abort criteria
• Air defense threat and route planning

The Jumpmaster is responsible for the safety and proper execution of the parachute operation. Jumpmaster duties include pre-flight inspections, in-flight procedures, and controlling the exit of jumpers from the aircraft. JM qualification is a critical skill for SF MFF operations.

Jumpmaster Qualifications:

• Current MFF qualification
• Minimum jump numbers (typically 50+ MFF jumps)
• Completion of Jumpmaster course
• Current medical and physical standards
• Demonstrated leadership and judgment

Pre-Jump Responsibilities:

• Brief all jumpers on mission profile and exit procedures
• Inspect all equipment: parachutes, oxygen, thermal protection
• Verify jump manifest and manifest numbers
• Confirm jumpmaster personnel inspection (JMPI) complete
• Coordinate with aircrew on jump run parameters

JMPI (Jumpmaster Personnel Inspection):

Thorough inspection of each jumper's equipment:

• Harness fit and routing
• 3-ring release system
• RSL attachment and routing
• Main and reserve ripcord handles accessible
• AAD armed and set properly
• Helmet secure, goggles in place
• Oxygen mask functioning
• Altimeter zeroed

In-Flight Procedures:

• 30 Minutes: Pre-breathe begins; equipment final check
• 20 Minutes: Move to approach and loading; final manifest check
• 10 Minutes: Stand up, hook up; static line or equipment checks
• Green Light: Execute jump run; control exit timing

Exit Control:

• Position jumpers at door in proper exit order
• Verify exit altitude with altimeter
• Control interval between jumpers (typically 1-2 seconds)
• Monitor for proper exit body position
• Account for all exits and report to aircrew

Emergency Procedures:

Jumpmaster must be prepared to handle in-flight emergencies:

• Malfunctioning oxygen equipment
• Jumper panic or refusal
• Equipment malfunctions discovered in flight
• Abort criteria (weather, mechanical, mission change)
• Post-exit accounting if jumpers do not exit

Documentation:

Jumpmaster maintains detailed records of the operation: manifest, exit times, malfunctions, injuries, and lessons learned. This documentation supports after-action reviews and improves future operations.

SF-Specific Considerations:

SF MFF operations often involve equipment jumps (weapons, supplies, communications gear) and may require formation flying with multiple aircraft. Jumpmaster must coordinate equipment drops, separation timing, and rally procedures for complex team infiltrations.