Skip to content
FFP-HU101 100 · Stability Draft — under review

Head-Up 101 — Fly a stable sit

version 2026-07-27

Prerequisites

Draft — under review. This competency unit is published for review and has not been formally approved. Content is advisory: recommended standards for flyers and coaches worldwide, not a rule set.

Application

Covers establishing and holding a stable, neutral head-up sit as an individual skill: sit exits, the all-90° neutral geometry, heading holds in the neutral sit, fall-rate control across the head-up ladder (knee-fly → sit → stag → stand), leg-initiated turns, the recovery loop drills (front and back loop), the altitude-check discipline, and head-up breakoff discipline.

Head-up is generally the first step in the vertical aspect of freeflying, with speeds of roughly 220–260 km/h (APF006 §6.1).

Applies to flyers who have completed Freefly 100 (back-fly control and the vertical recovery position).

Environment: sky, with tunnel drills as preparation and as an evidence route for individual position work (IBA Static Level 3 equivalents).

  • Supervision (scaffold stage): coached, coach-held/coach-as-reference in the tunnel, coach as in-air reference on sky jumps.
  • Fading to solo consolidation jumps flown under the Freefly 100 solo protocols (working heading 90° to jump run, two functioning audibles, static-turn drift check, and the strong recommendation against solo stand-up flying, a stand can generate massive horizontal movement that a flyer with no reference cannot detect).
Regulatory context (worldwide)

Regulations change; each position is quoted with its document edition or date. This is jurisdictional context, not advice on which body is “right”.

  • Australia (APF). Freefly training requires at least a Certificate Class B, freefly-suitable equipment and a course of instruction per the TOM (OR 9.2.1).
  • Training descents are briefed by a Freefly Coach (TOM 5.7.3) under DZSO authorisation and CI supervision (OR 11.1.4–11.1.5).
  • A Cert B holder may fly solo or 2-way freefly with DZSO approval (TOM 5.7.1).
  • A functioning audible altimeter is mandatory on every freefly descent (OR 9.2.3).

UK: entry to FF1 training requires FS1 (British Skydiving Ops Manual 6.6.1–6.6.2).

Acronym key. APF, Australian Parachute Federation. Op Regs / OR, the APF Operational Regulations. TOM, the APF Training Operations Manual. RBT, the recommended (basic) training tables in the APF Freefly and Angles Guide. RS, the APF regulatory schedules (crest requirements). FFC, freefly crest. CI, chief instructor. DZSO, drop zone safety officer.

USPA SIM, the United States Parachute Association Skydiver’s Information Manual. CSPA, Canadian Sport Parachuting Association.

Pre-requisite units

  • FFP-F100 (Establish freefly foundations), in particular back-fly control to the F100 sky standard: a stable neutral back-fly with eyes on the belly-flying coach.
  • A 360° each way, stopping on the spot looking at the coach and staying on level.
  • A barrel roll back to belly.
  • Then a fall-rate follow, staying on level as the coach moves through belly → fast-knees → sit fall rates (back-fly is the recovery position, so its usable speed range needs to be huge).
  • Plus the vertical recovery position to reflex standard.

RPL route into this unit: tunnel records showing stable back-fly and back↔sit transitions, plus a coached familiarisation jump flown against FFP-F100 criteria.

Elements and performance criteria

1. Plan the jump/session

1.1
State the jump's single declared objective and its success criteria.
1.2
Confirm currency, conditions and the planned drill sequence with the supervising coach (guide: one new drill per jump).
1.3
Brief the load on the working heading (set 90° off the stated jump-run heading) and the expected backslide direction.
1.4
State the altitude for ending head-up work (breakoff guide: 5,500 ft minimum for head-up jumps) and the planned deployment altitude.

2. Prepare

2.1
Complete a freefly-specific gear check: handles clear, BOC pouch condition, bridle covered, riser covers and pin flaps secure, closing loop tight, chest strap and harness tight, leg-strap bungee, secured jumpsuit, goggles, hard helmet.
2.2
Verify audible altimeter(s) set and functioning, two functioning audibles should be regarded as mandatory best practice before any solo freefly: an audible is a hidden safety-critical device that can fail silently, and where a group's breakoff gives you altitude redundancy, a soloist has none.
2.3
Rehearse the neutral sit position on the ground: five holds with eyes open, five with eyes closed.
2.4
Confirm exit order and separation with the load (freefly groups after belly groups on an into-wind jump run; separation by ground covered, not a fixed second-count).

3. Perform

3.1
Exit presenting the back to the relative wind and fly the hill into a stable sit within 5 seconds (guide), using minimal inputs.
3.2
Establish the neutral sit geometry: feet flat with even pressure, knees bent 90° at shoulder width, hips at 90° with torso perpendicular, arms out 90° for stability, heels aligned below knees, eyes to the horizon.
3.3
Maintain heading ±45° (guide) for 10 seconds in the neutral sit.
3.4
Check altitude between each manoeuvre or at least every 5 seconds.
3.5
Move one rung at a time along the fall-rate ladder knee-fly → sit → stag, holding each rung stable for 3 seconds with even, symmetrical pressure before moving on.
3.6
Demonstrate the stand rung with a visual reference, in the tunnel, or in the sky with a coach or another jumper, returning to the neutral sit without corking; the reference matters because a stand can generate massive horizontal movement, and a solo flyer has no way to detect the drift it creates.
3.7
Perform a leg-initiated 360° turn in each direction, stopping within ±45° of the reference heading.
3.8
Perform the recovery loop drills: from the neutral sit, a front loop (legs tucked under the torso, air on the shins, tuck to a ball) and a back loop, each re-establishing a stable sit on heading (both loops per the APF Training Operations Manual Stage 2).
3.9
Execute the vertical recovery position immediately on any fallout or loss of control, resuming drills only once stable and on heading.

4. Complete

4.1
Initiate breakoff at the briefed altitude (within −0/+300 ft), ending all head-up work.
4.2
End the jump per the briefed protocol: on a coached/group jump, transition to belly, slow to belly-fall speeds and track 90° from jump run while checking airspace above, below and behind; on a solo consolidation jump, end the work without tracking, turn 90°, pause, recover to back-fly, slow down, then transition to a belly orientation, dissipating speed over at least 1,000 ft before deployment (a soloist's movement risks are already the dominant hazard, so adding movement at breakoff is unnecessary risk, movement at breakoff belongs in formation jumps, where it is practised and needed; FFP-F100 solo protocol).
4.3
Deploy at the planned altitude after clearing airspace.
4.4
Fly the planned opening heading and canopy traffic plan.

5. Review

5.1
Debrief the jump against the declared objective using video.
5.2
Identify on video any instance of the three documented fault patterns, backsliding, fallout to back or belly, uncontrolled rotation, and name its body-position cause.
5.3
Write the jump up in the logbook, naming the unit and skills assessed (e.g. "HU101 skills assessment"), with a reflection on the criteria results and one correction for the next jump, the curriculum is what makes a log entry meaningful.

Bold criteria are safety-critical. Within FFP course assessment they are non-compensable, a Not Yet Satisfactory on a bold criterion means the unit is Not Yet Competent, however good the rest of the flying, because these are the criteria that protect the flyer and everyone else on the load. Outside a course they read as strongly recommended best practice with the reasoning stated: The Freefly Project educates on risk; it does not regulate.

Coaching criteria for the fault patterns (element 5.2 reference table, APF006 §6.8/§6.10; Gale; AXIS):

Fault patternDocumented body-position causes
BackslidingWind pushing knees to chest; torso leaning too far forward with arms behind; looking down; tired/rolled-forward shoulders; feet and knees too close together and tucked under
Fallout to backToes pointed at the ground; lower legs blown around; arms too far forward; back not straight
Fallout to bellyKnees bent less than 90° with heels tucked under and wind on the shins; arching too much
Uncontrolled rotationAsymmetric leg or arm pressure; legs too close together; heels out of line with knees; uneven upper-leg height

Foundation skills

  • Briefing/debriefing communication.
  • Altitude and working-time numeracy (freefly time from 13,000 ft is roughly 20 seconds shorter than a belly jump, plan drill sequences accordingly).
  • Planning and organising (one-objective drill sequencing).
  • Self-management under stress (recovery discipline, altitude-check habit, recognising fatigue).

Performance evidence (suggested sufficiency — adjust locally)

Ability evidenced across a suggested guide of 8 dedicated head-up jumps, a guide to how long it might take, not a gate: practised, assimilated skill, not jump count, is the criterion.

Recommended shape: coached jumps alternating with solo consolidation jumps, consolidation time lets a skill assimilate between coached inputs, and the F100 solo protocols (working heading, two audibles, drift check) exist because a soloist gives up the redundancy and reference a group provides.

  • Tunnel time can substitute for up to three of the skill-development jumps (guide: ~15 minutes of coached static head-up tunnel time on the equivalent drills per substituted jump) but not for the sky validation jumps.
  • Evidence across at least two different days/conditions.
  • including two consecutive sky jumps meeting all criteria without coach assistance or prompts.
  • All within a recommended 6-month currency window.

Knowledge evidence

  • State the recommended freefly minimums: 10,000 ft exit guide.
    • Breakoff guides, general freefly 5,000 ft up to a 4-way and 5,500 ft for 5-way or larger.
    • Head-up groups 5,500 ft minimum and 6,000 ft for 6 or more, with 10-way-plus head-up being advanced flying where the leader owns the risk decision and should consider going higher, and why head-up needs more altitude: a head-up breakoff is less efficient, with less power and less track efficiency, and altitude is lost rotating to head-down before the track.
    • Noting most modern jumpers use 5,500 ft for any freefly group and will generally not accept 4,500 ft.
  • State further, as the evidence-backed orientation rule for larger head-up groups, that a head-up breakoff cannot buy separation at all in a group of 6 or more, so flyers should be head-first by ~6,500–7,000 ft (Carlton’s GPS data; taught and applied in FFP-AN202), the altitude floor and the orientation rule work together: the 6,000 ft floor is when head-up work ends, and by ~6,500–7,000 ft the flyer should already be head-first.
  • Not still head-up.
    • And freefall separation of at least 1,000 ft above planned deployment.
    • Do not read the 6,000 ft guide as a licence to stay head-up below Carlton’s head-first floor.
  • State the altitude-check discipline (between each manoeuvre or at least every 5 seconds) and why the shorter freefly working time (roughly 20 seconds less than a belly jump from 13,000 ft) demands it.
  • Describe corking, the sudden deceleration from head-up speeds (~220–260 km/h) to belly speeds, and why it is a collision hazard for anyone above.
  • Describe the mechanics of the vertical recovery position (back-to-earth, feet together, knees toward chest, arms out and slightly back), and explain why solid back-fly is a genuine head-up foundation rather than remedial work, the back-fly de-arch used for fall-rate control transfers directly into head-up out-face carving and layouts, so the F100 back-fly standard is load-bearing for this unit, not a hurdle already cleared.
    • Period Australian coaching framed the progression as Belly → Back-fly → Sit → Head-Down; Jonathan Townsager, ASM 73 p.27.
  • Describe the neutral sit references (all-90° angles, even foot pressure, heels below knees) and how each of the three fault patterns arises from a specific geometry error.
  • State the fall-rate ladder order (knee-fly → sit → stag → stand) and explain why each rung falls faster (progressively less surface area presented by the legs, with less inherent stability).
  • State the solo-freefly protocols and their rationale.
    • Two functioning audibles because an audible is a hidden device that can fail silently and a group’s breakoff is your altitude redundancy, a soloist has neither backup.
    • Working heading 90° to jump run.
    • Briefed backslide direction.
    • The static-turn drift check.
    • Why solo stand-up flying is strongly discouraged, a stand can generate massive horizontal movement that a flyer with no reference cannot detect.
  • State the solo end-of-jump protocol and why it differs from a group breakoff, a soloist ends the jump without tracking (turn 90°, pause, recover to back-fly, slow down, transition to belly, deploy), because the solo’s movement risks are already the dominant hazard, so adding movement at breakoff is unnecessary risk.
    • Movement at breakoff is practised in formation jumps, where it is needed.
  • State freefly exit-order and separation logic (faster-falling groups after slower on an into-wind jump run, separation by ground covered).

Assessment conditions

  • Sky jumps from a recommended 10,000 ft minimum.
  • Mandatory video of assessment jumps (coach-flown, helmet-mounted or ground-to-air; tunnel video for tunnel-evidenced components; candidate identifiable).
  • Required equipment, visual altimeter, functioning audible (two, the solo best practice, when assessed on a solo jump), hard helmet, freefly-suitable gear per the FFP-F100 gear standard.
  • Conditions within the candidate’s cleared limits.
  • Assessor: a freefly coach current in head-up coaching.
  • Tunnel components may be evidenced under an IBA-rated (or equivalent) instructor.
  • Assessment against the published FFP-HU101 checklist, each criterion marked Satisfactory / Not Yet Satisfactory.

Declare shoulder history before vertical work: vertical body positions and their transitions load the shoulder joint, and the Australian record carries serious cases from the sit-to-head-down transition specifically, a shoulder dislocation that prevented the flyer reaching the BOC (ASM 56 p.74) and torn shoulder ligaments (ASM 83 p.25).

A candidate with a history of shoulder dislocation, instability or reconstruction should raise it with the coach before vertical work so arm position and the recovery sequence can be adjusted and medical clearance sought where appropriate, a shoulder that cannot reach the BOC is a deployment failure, not just a flying limitation.

Regulatory context

Australia: APF Freefly Coach, with training descents under DZSO authorisation and CI supervision; elsewhere: national or drop-zone equivalent

Acronym key. APF, Australian Parachute Federation. Op Regs / OR, the APF Operational Regulations. TOM, the APF Training Operations Manual. RBT, the recommended (basic) training tables in the APF Freefly and Angles Guide. RS, the APF regulatory schedules (crest requirements). FFC, freefly crest. CI, chief instructor. DZSO, drop zone safety officer.

USPA SIM, the United States Parachute Association Skydiver’s Information Manual. CSPA, Canadian Sport Parachuting Association.

RPL evidence set

Experienced entrants may evidence this unit by any sufficient combination of:

  • (a) tunnel records at IBA Static Level 3 or equivalent (neutral sit, sit turns, back↔head-up transitions, sit-fly up/down, per third-party summaries; verify against IBA source material).
  • (b) a logbook showing prior head-up jumps with coach or drop zone safety officer endorsements.
  • (c) a video portfolio showing a stable neutral sit, turns in both directions, fall-rate changes and front- and back-loop recoveries, with the candidate identifiable.
  • plus, in all cases, one sky challenge jump assessed against the full FFP-HU101 checklist, including the breakoff, deployment and altitude-awareness criteria, which video portfolios rarely evidence.
Regulatory context

Australia: Freefly Training Table Stage 1 sign-off, or an FFC-HU, exceeds this unit; UK: FF1 exceeds this unit

Acronym key. APF, Australian Parachute Federation. Op Regs / OR, the APF Operational Regulations. TOM, the APF Training Operations Manual. RBT, the recommended (basic) training tables in the APF Freefly and Angles Guide. RS, the APF regulatory schedules (crest requirements). FFC, freefly crest. CI, chief instructor. DZSO, drop zone safety officer.

USPA SIM, the United States Parachute Association Skydiver’s Information Manual. CSPA, Canadian Sport Parachuting Association.

Coaching priorities

Deliver in the project’s priority order:

  • Safety → Fun → Learning (curriculum Part A0). Safety criteria are non-compensable.
  • The session is designed to be enjoyable, participants choose this expensive hobby, and enjoyment sustains both the student and the sport.
  • One declared objective per jump keeps cognitive load light, and debriefs end on a win with one improvement focus (criterion 5.3).

Physical preparation (era coaching wisdom). Head-up flying makes a sustained demand on the quads and the sit endurance to hold a neutral position through a full working block, and because tunnel blocks run up to ~2 minutes the conditioning that helps is isometric holds, not reps.

Period Australian coaching (Tracey Lane) recommended, position-specific for head-up: isometric wall-sits held up to ~2 minutes to match a tunnel block, pressing through the heels and targeting the quads rather than the knees; single-leg balance work for asymmetric docks; and hamstring bridges for back-fly (the recovery position) (ASM 79 pp.28–29).

Offer this as optional preparation a motivated flyer can do between jump days, it is coaching wisdom, not a gate.

Sources

The evidence behind this unit
  • Head-up official-sources research, APF006 Freefly and Angles Guide (Aug 2023): §3.1–3.3 gear/planning/breakoff guides, §4.2 vertical recovery position, §6.1–6.10 head-up position, exit, fall-rate, turns, transitions and common problems, §8.2/8.5 RBT head-up competencies and Head Up 1 front-flip recovery.
    • APF OR V01-2026 (OR 9.1.4, 9.2.1–9.2.3) and TOM V01-2025 (5.7.1–5.7.5, Appendix L) as Australian jurisdictional context.
    • USPA SIM 5-2 (backfly-first, corking, drift, exit order).
    • British Skydiving Ops Manual 6.6 (FF1 sit/stand requirements).
    • Parachutist “Foundations of Flight”, Sit-Fly Fall-Rate Changes (Leg Mechanics) (Sharp, Nov 2017: altitude check every manoeuvre or 5 s; symmetrical leg pressure) and Sit-Fly Turns (Arm Mechanics) (AXIS, May 2018).
    • Skydive Arizona “Learning to Freefly” (recovery ladder, beginner breakoff to back-fly then belly).
  • Head-up community-sources research, Lesley Gale, “Sit Flying” (Skydive Mag, 2014): the detailed neutral-sit geometry (90° references, heels below knees, asymmetry-driven turns) and six points of motion.
    • AXIS/Parachutist knee-fly → stag → stand fall-rate ladder (“each with its own terminal velocity”).
    • AXIS head-up breakoff column (transition to belly, slow to belly speeds before deployment).
    • Alethia Austin, “solo freeflyer” (backsliding incident, backslide-direction briefing, 90°-off-jump-run orientation).
    • Fury Coaching (Frikken) hill mechanics (“getting cut”, minimal inputs).
    • Skydive University eyes-open/eyes-closed ×5 position rehearsal.
    • IBA Static Level 3 skill set as the tunnel evidence route.
    • Dropzone.com fault reports (flipping over backwards, spinning).
  • Australian Skydiver Magazine archive (Australian Skydiver Magazine, 2009–2016; non-official magazine, PDF-page cites), sit-to-head-down shoulder-load cases: dislocation preventing a BOC reach (ASM 56 p.74) and torn ligaments (ASM 83 p.25).
    • Jonathan Townsager’s Belly→Back→Sit→Head-Down framing, back-fly de-arch transferring to head-up out-face carving (ASM 73 p.27).
    • Tracey Lane’s head-up isometric conditioning, wall-sits to match tunnel-block length, single-leg balance, hamstring bridges (ASM 79 pp.28–29).
  • The project’s coaching doctrine, solo freefly doctrine (2026-07-26): two functioning audibles essential when solo (silent-failure and group-redundancy arguments).
    • Static-turn drift check.
    • Solo head-up kept to sit or recovery-position turns, solo stand strongly discouraged (horizontal-movement risk, education not prohibition per The Freefly Project 2026-07-27).
    • Breakoff guides: head-up 5,500 ft minimum / 6,000 ft for 6+ / 10+ advanced (leader risk decision), informed by Carlton’s evidence on head-up breakoff inefficiency (less power, less track efficiency, altitude lost rotating to head-down).
    • Note: Carlton’s own conclusion is an orientation rule (a head-up breakoff cannot buy separation at 6+, so be head-first by ~6,500–7,000 ft), not the altitude floor itself.
    • The altitude guide and the head-first-by-6,500–7,000 ft rule are both carried here (the rule is taught in FFP-AN202).
  • Learning-frameworks research §7, unit template, Dave’s psychomotor verb ladder (100-level: perform with guidance, imitation → precision), non-compensable safety criteria, assessment principles and rules of evidence.
Suggest a change to this page open

Spotted an error, or know something that would make this page better? Tell us. The Freefly Project is built to be improved by freeflyers everywhere.

Privacy: we store your suggestion, and any name and email you choose to give, only to review and act on it and to credit contributors who opt in. Names and emails are never published; email is never shown publicly. You can ask us to remove your details at any time.

The coaching priority stack

Safety → Fun → Learning

Every course, jump card, briefing and debrief is designed and delivered in this order. Coaches hold it under pressure: never trade safety for fun, never trade fun for learning throughput.

  1. 01 Safety

    Non-negotiable, always first. Safety-critical criteria are never traded for anything below this line.

  2. 02 Fun

    Flyers choose an expensive hobby for love. Enjoyable coaching keeps them inside the system where the standards apply. Fun is itself a safety mechanism.

  3. 03 Learning

    The structured outcomes. Learning sticks best when the jump was safe and fun, because motivation sustains deliberate practice.