Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Short Field Take-off and Landing

CASA Recreational Pilot License (Aeroplane) — CASA Sample Syllabus Lesson 22, Pre-flight theory

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Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Have you ever run out of runway in your head?

  • Picture a strip with tall trees at the far end. Same aeroplane, same weight — but it's a hot day and the grass is long and wet.

TODO: update this with a youtube short of a STOL landing on the creek, to chat about how that is possible, then how our safety margins are very different.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Have you ever run out of runway in your head?

  • Picture a strip with tall trees at the far end. Same aeroplane, same weight — but it's a hot day and the grass is long and wet.
  • What's changed about how much runway you need — to get off, and to stop?

TODO: possibly add the new circuits 3D component showing difference between the normal and short-field take-off?

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Two skills, one mindset

Today we build two "maximum performance" skills:

  • Short-field take-off — lift off and clear an obstacle in the least possible distance
  • Short-field landing — touch down precisely and stop in the least possible distance

"Short field" is really a misnomer. The performance charts tell you if a runway is suitable at all. The technique is what you use when a runway is only just suitable.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Theory Lesson Overview

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Learning Objectives for this lesson

By the end of this session, our aim is to be able to:

  • List the factors that affect take-off and landing distance, and say which way each one pushes
  • Calculate the take-off and landing distance required from the aircraft's performance charts
  • Calculate the headwind and crosswind components for a given wind and runway
  • Describe the short-field take-off technique, including the best-angle climb for obstacle clearance
  • Describe the short-field landing technique — touching down at the minimum safe speed at a chosen point
  • Revise the engine-failure actions for a failure after take-off and in the circuit
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Waypoint 1 — Performance Factors

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

What determines the distance required?

The runway distance you need is set by how much energy the aeroplane must gain (to fly) or lose (to stop), and how quickly it can do that. Several factors change both.

They group into four families:

  • Density altitude — high elevation, high temperature, high humidity all thin the air
  • Weight — a heavier aeroplane needs more runway, to fly and to stop
  • Wind — a headwind shortens the run; a tailwind lengthens it
  • Runway — surface (soft ground, long wet grass) and slope (up or down)
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Density altitude — the big one

Lift and engine power both depend on air density. Thinner air means:

  • The wing produces less lift at a given speed → higher true speed needed to fly → longer ground run
  • The engine and propeller produce less thrust → slower acceleration

Three things thin the air — they stack up:

  • High elevation — less air to begin with
  • High temperature — hot air is less dense
  • High humidity — water vapour is lighter than dry air

A cool morning at sea level and a hot afternoon on a high strip can be different aeroplanes.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Weight, wind and surface

Factor Heavier / worse → distance
Weight More weight → higher stall and lift-off speed, slower acceleration, longer run; landing run also longer (more energy to dissipate)
Headwind Reduces ground speed at lift-off / touchdown → shorter run
Tailwind Increases ground speed → longer run — a small tailwind hurts a lot
Surface Long grass, soft ground, mud, snow → more rolling resistance on take-off (longer); but less braking on landing (also longer)
Slope Uphill lengthens the take-off run; downhill lengthens the landing run
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Climb performance and obstacle clearance

Getting off the ground is only half the take-off. We must then out-climb the obstacle at the end of the strip.

  • The same thin air / high weight that lengthens the ground run also flattens the climb
  • Obstacle clearance is about the angle of climb (height gained per distance over the ground), not the rate
  • If we have to abandon the approach, the missed-approach (go-around) climb is subject to exactly the same limits

The decision to operate from a marginal strip must account for the climb out, not just the run.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Waypoint 2 — Planning the Numbers

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Run vs distance — what the charts actually give you

Two numbers, and the difference matters:

  • Take-off / landing run — wheels rolling on the ground (start roll → lift-off, or touchdown → stop)
  • Take-off / landing distance — the run plus the air distance over a 50 ft screen at the obstacle

Profile diagram contrasting take-off run with the longer take-off distance over a 50 ft screen, and landing distance over a 50 ft screen with the shorter landing run after touchdown.

Obstacle clearance is measured to a 50 ft screen height. Always check the distance, not just the run, when there are obstacles.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Reading the take-off / landing chart

The aircraft flight manual chart steps you through the corrections in order. Typically:

  1. Start with pressure altitude and temperature (gives density-altitude effect)
  2. Correct for weight
  3. Correct for wind component (head or tail)
  4. Correct for runway surface / slope (often a flat percentage factor)
  5. Apply the safety factor required by your operation

The chart gives a book figure for a new aeroplane flown by a test pilot. Add your operational safety margin — never plan to use 100% of the available runway.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Wind components — head, tail and cross

Wind is rarely straight down the runway. We split it into:

  • the headwind / tailwind component — along the runway (helps or hurts distance)
  • the crosswind component — across the runway (limits, and drives the crosswind technique)

Diagram showing a runway with a wind arrow at an angle, resolved into a headwind component along the runway and a crosswind component across it, with the angle between wind and runway marked.

A quick mental rule (the "clock" rule) for the crosswind component:

  • 30° off ≈ ½ the wind speed
  • 45° off ≈ ¾ (≈ 0.7) of the wind speed
  • 60° or more ≈ treat as the full wind speed
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

A worked wind example

Wind 210°/20 kt, runway 18 (heading 180°):

  • Angle off the nose: 210 − 180 = 30°
  • Crosswind component (30° → ½): 20 × 0.5 = 10 kt
  • Headwind component (cos 30° ≈ 0.87): 20 × 0.87 ≈ 17 kt

Now check: is 10 kt of crosswind within your and the aircraft's limit? And does 17 kt of headwind still leave a sensible margin if it drops or swings?

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Don't forget weight, balance and fuel

Before any of the performance numbers mean anything, the aeroplane must be legally and safely loaded:

  • Weight and balance — within limits, and the actual weight is what you take into the performance chart
  • Fuel — enough for the flight plus reserves; fuel is also weight
  • The numbers come from the POH / Flight Manual — performance charts, weight and balance data and limits all come from the aircraft's own documents
  • Operational documents — MEL (Minimum Equipment List), NOTAMs, ERSA, AIP and (if fitted) GNSS RAIM checked as part of pre-flight planning

Performance planning and loading are one job, not two — the weight you load is the weight you must out-perform.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Waypoint 3 — Short-field Take-off

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

The short-field take-off — the idea

Goal: be airborne in the least distance, then climb at the steepest angle to clear the obstacle.

We achieve this by:

  • Using all the available runway — line up right at the threshold
  • Setting the manufacturer's recommended flap setting for short field
  • Applying full power against the brakes, checking it before releasing
  • Lifting off at the lowest safe speed, then flying the best-angle climb

Every metre of runway behind you is wasted. Begin the roll from the very start of the strip.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Short-field take-off — the sequence

  1. Flap — set the manufacturer's recommended short-field setting
  2. Line up using all available runway; nose-wheel straight
  3. Brakes held, full power, check RPM / oil pressure / engine indications
  4. Release brakes; keep straight with rudder, airspeed alive
  5. Ease into the flying attitude so the aeroplane lifts off at the lowest safe speed
  6. Best-angle climb () until the obstacle is cleared
  7. Then lower the nose to the best-rate climb and raise flap when safe

On a loose / gravel surface, apply power rolling slowly forward rather than standing on the brakes — to protect the propeller.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Best-angle vs best-rate climb

Obstacle clearance is about angle, not rate — the most height gained per metre over the ground.

  • — best angle: steepest climb, most height per distance → use to clear obstacles
  • — best rate: most height per time → use once the obstacle is behind you
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Best-angle climb — handle with care

The best-angle climb is flown slow and nose-high — close to the regime we studied in the stalling lesson.

  • Speed is low, attitude is high, and you have little margin above the stall
  • An engine failure here needs an immediate and positive lower of the nose to keep flying speed
  • Hold only until the obstacle is cleared, then accelerate to the best-rate climb

Fly the target speed precisely. Too slow steepens nothing — it just moves you toward the stall.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Waypoint 4 — Short-field Landing

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

The short-field landing — the idea

Goal: cross the boundary at the minimum safe height and speed, touch down at a chosen point, and stop in the least distance.

  • A stable, full-flap approach, slightly steeper to clear the obstacle
  • The lowest recommended approach speed — aim to reach it crossing the boundary
  • Minimal float, touch down precisely, then maximum braking without skidding

Speed control is everything. Excess speed on a short field becomes float — and float becomes overrun.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Short-field landing — the sequence

  1. Full flap, stable approach, aim point chosen short of obstacles
  2. Airspeed with elevator, descent rate with throttle — the standard approach split
  3. Aim to reach the minimum recommended speed crossing the boundary
  4. Minimal round-out (the nose attitude is already low) — close throttle, touch down with little or no float
  5. After touchdown: maximum braking without locking the wheels, hold direction
  6. Go around without hesitation if the approach is unstable, too high, or too fast

A wind gradient near the ground can sink you fast — a momentary touch of power can arrest a high sink rate in the flare.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

When to abandon — the go-around

The short-field landing has the least margin of any landing we fly. The decision to go around must be early and unhesitating:

  • Too fast or too high crossing the boundary → go around
  • A balloon or bounce you can't smoothly resolve → go around
  • Any doubt about stopping in the distance available → go around

The go-around: full power · check the climb speed · flap up in stages · re-trim.

You cannot convert a bad short-field approach into a good landing. Go around and try again.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Waypoint 5 — Engine-Failure Revision

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Engine failure after take-off

We revise the circuit emergencies in the short-field context, because the low, slow, steep profile gives the least margin.

Engine failure after take-off (simulated):

  • Lower the nose immediately to the gliding attitude — even more urgently than normal, because the best-angle climb speed is low
  • Choose a landing area ahead, minimal heading change
  • Trouble-check only if time and height permit; otherwise fly the aeroplane
  • Flap / sideslip as needed; secure the aircraft (fuel, ignition, master) before impact if a forced landing is unavoidable
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Engine failure in the circuit

Engine failure in the circuit area (simulated):

  • Attitude first — establish the glide and best glide speed
  • Assess the wind and your position; choose the most achievable landing area
  • Plan a glide approach to it, using the energy you have
  • Checks — trouble-check and Mayday as height and workload allow

Aviate, navigate, communicate — in that order. The first job is always to fly a controlled glide.

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Waypoint 6 — Recap

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Summary — recall questions

See how many you can answer before the next slide:

  • List four factors that lengthen the take-off distance required
  • Name the two distances a take-off chart gives, and where the 50 ft screen fits
  • Describe how to find the crosswind component for a wind 40° off the runway at 20 kt
  • Explain why we climb at best angle (), not best rate, to clear an obstacle
  • Identify the first action if the engine fails during a best-angle climb
  • Explain the touchdown aim for a short-field landing, and when to go around
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Summary — key points

Topic Key point
Performance factors Density altitude (height, heat, humidity), weight, tailwind, soft/upslope surface all lengthen distance — and flatten the climb
Planning the numbers Charts give run and distance to 50 ft; correct for altitude, weight, wind, surface, then add your safety margin
Wind components Clock rule: 30° → ½, 45° → ¾, 60°+ → full crosswind; a strong cross also cuts the headwind
Short-field take-off All runway, recommended flap, full power then release, lowest safe lift-off, to clear obstacle, then flap up
Short-field landing Full flap, lowest safe speed at the boundary, precise aim point, minimal float, max braking; go around early if unstable
Engine failure Lower the nose immediately ( is close to the stall); fly a controlled glide; aviate-navigate-communicate
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Objectives Check

Can you:

  • List the factors affecting take-off and landing distance, and which way each one pushes?
  • Work your aircraft's chart to a take-off and landing distance for today's conditions?
  • Calculate the head and crosswind components for a given wind?
  • Describe the short-field take-off, including the best-angle climb and when to raise flap?
  • Describe the short-field landing, including the touchdown aim and the go-around decision?
  • State the engine-failure actions after take-off and in the circuit?
Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Arrival

Short Field Take-off and Landing — Theory: Performance, Planning and Technique

Questions?

Any questions before the pre-flight brief?

Bring your aircraft's performance charts and today's forecast — we'll work the real numbers together at the whiteboard.

By this lesson the student flies competent circuits, has been through circuit emergencies, and has flown their first solo and training-area solo. This lesson adds two related "maximum performance" skills — getting the aeroplane off the ground (and over an obstacle) in the shortest distance, and getting it stopped in the shortest distance. The theory builds from the numbers up: first *what* makes a take-off or landing run long or short, then *how we calculate* the distance required and the wind components, then the *technique* for each, and finally a revision of the engine-failure emergencies that are most relevant when operating from a marginal strip. Note the CASA caveat we will return to: "short field" is really a misnomer. The performance charts tell you whether a runway is suitable at all — the technique is what you apply when a runway is only *just* suitable.

Open with the student's own experience. By now they have taxied onto plenty of runways. Get them imagining the variables before we name them. Let the question sit. We want them to volunteer "hot day", "uphill", "soft surface", "tailwind" — the very factors we are about to formalise.

Draw out that *both* take-off and landing distances grow under the same adverse conditions. The day that lengthens your take-off run also lengthens your landing run. The key mindset shift for this lesson: the runway length is a number you *check against*, not something you hope works out. We never "have a go and see".

FIM Ch 11 / Ch 12 both open with this caveat — make the point explicitly. The decision to go is made on the charts, on the ground, before you ever line up. The handling technique simply realises the performance the charts say is available. This framing matters: a beautifully flown short-field take-off does not rescue a runway that the charts said was too short.

Roughly 30 minutes of long briefing. The middle two waypoints (Performance Factors, Planning the Numbers) are the underpinning knowledge CASA assesses; the take-off and landing waypoints are the technique; engine-failure revision ties back to circuit emergencies.

Performance criteria mapped: C2.1 (operational documents, W&B, performance, fuel), A2.5 (short-field take-off), A3.1 best-angle climb, A4.5 (short landing), A6.1/A6.2 (engine failure).

Click Direct-To to advance to Performance Factors.

PHAK Ch 11 (Aircraft Performance) is the reference. The four families are a memory hook, not a checklist to drill through — the next slides take the high-impact factors one at a time. The single most important grouping for students to internalise is the density-altitude trio: altitude, temperature, humidity.

PHAK Ch 11: density altitude. This is the factor most often underestimated in fatal "failed to climb / overran" accidents. Emphasise that it hits take-off twice — longer run AND poorer climb to clear the obstacle. A concrete number for the student's aircraft type belongs in the chart-reading part of the brief; here we keep it conceptual.

AFH Ch 6 / Ch 9 and PHAK Ch 11. The trap to highlight: surface and slope can pull in *opposite* directions for take-off vs landing. A soft uphill strip is bad for take-off; the same strip downhill is bad for landing. Wind usually dominates — which is why we ideally take off and land into wind even if it means accepting an up-slope.

FIM Ch 11: a maximum-angle climb is held until the actual or assumed obstacle is cleared. The link to the next waypoint's VX slide: best ANGLE of climb is the obstacle-clearance speed. Plant that now.

Click Direct-To to advance to Planning the Numbers.

PHAK Ch 11: take-off and landing distance definitions. Students frequently quote the ground roll and forget the screen-height distance, which is the number that actually clears the trees. TODO image — generate and save as run-vs-distance-profile.png in this lesson's brief-assets dir. IMAGE PROMPT (for an image generator): A clean, flat-style instructional aviation diagram in a side-on (profile) view on a light background, restrained blue-and-grey palette, minimal text, no photorealism. Show a horizontal runway as a grey strip along the bottom. TOP HALF: a small light-aircraft silhouette starting at the left edge; a blue dashed line along the ground from the start point to a lift-off point labelled "TAKE-OFF RUN (wheels leave ground)"; then a curved climbing path continuing up to a dashed vertical bar marked "50 ft screen" with a small tree at its base; a longer bracket spanning from the start to directly below the 50 ft screen labelled "TAKE-OFF DISTANCE (to 50 ft)". BOTTOM HALF (mirror concept): an aircraft descending from the upper left over a "50 ft screen" bar with a small tree, touching down, then a shorter blue dashed ground line to a stop; a bracket from below the 50 ft screen to the stop point labelled "LANDING DISTANCE (from 50 ft)", and a shorter inner bracket from touchdown to stop labelled "LANDING RUN (ground roll)". Landscape orientation, generous margins so it reads at slide size.

This is a "read the manual for your type" slide — the exact chart and the order of corrections vary. Keep it generic: the student must be able to work their own aircraft's chart. C2.1 f. requires calculating take-off and landing performance to standard 2. Reader instruction, not a TODO: have the student bring their aircraft's POH/AFM performance section to the brief and work a real example.

PHAK Ch 11 has the crosswind component chart; the clock rule is the in-the-cockpit approximation. Tie back: a strong crosswind has a *smaller* headwind component, so it lengthens your distance compared with the same wind straight down the strip — a double reason to respect it on a short field. TODO image — generate and save as wind-component-diagram.png in this lesson's brief-assets dir. IMAGE PROMPT (for an image generator): A clean, flat-style instructional aviation diagram, top-down (plan) view, light background, restrained blue-and-grey palette, minimal text, no photorealism. Show a grey runway strip running left-to-right with centreline dashes and a runway-number block at the left threshold. From the upper right, a bold blue arrow labelled "WIND" points down toward the runway at roughly 40 degrees to the runway centreline. Resolve this wind arrow into two thinner component arrows drawn as a right-angle vector triangle: one horizontal arrow along the runway pointing toward the threshold labelled "HEADWIND COMPONENT", and one vertical arrow across the runway labelled "CROSSWIND COMPONENT". Mark the angle between the WIND arrow and the runway centreline with a small arc labelled with the Greek letter theta. Keep labels short and in a simple sans-serif. Landscape orientation, generous margins so it reads at slide size.

Work this on the whiteboard with the student rather than just showing it. Then ask the reverse question: if the crosswind limit is 15 kt, how far off the nose can a 20 kt wind be before we're at the limit? Reinforces the clock rule both directions. The numbers here are illustrative — encourage the student to redo it with today's actual forecast wind in the pre-flight brief.

C2.1 b. and f. — operational documents and the W&B / performance / fuel calculations are explicitly assessed this lesson. Keep it brief in theory; the actual calculations happen as pre-flight planning. The teaching point is the linkage: a heavier load is a longer runway requirement.

Click Direct-To to advance to Short-field Take-off.

FIM Ch 11 short-field take-off sequence. The "full power against the brakes, check, then release" point lets you confirm the engine is making full power before you commit any runway — important on a marginal strip. Note the loose-surface exception on the next slide.

FIM Ch 11: the gravel caveat is a real exam point. Sequence note: flaps come up AFTER the obstacle is cleared and at a safe speed — raising them early sinks the aeroplane. Connect raising flap too early to the stalling lesson's "flap retraction = sudden lift loss" point.

PHAK Ch 11 / AFH Ch 6. Use the component to show that VX is the slower of the two speeds and gives the steeper path. Emphasise: VX is held only as long as needed to clear the obstacle, because it is a high-drag, low-speed, poor-visibility-over-the-nose condition. The CASA standard for best-angle climb this lesson is level 2. Reader instruction: confirm your aircraft type's published VX and VY before the flight.

FIM Ch 11: engine failure during the max-angle climb requires "a very positive forward movement of the control column". This is the bridge to the engine-failure-revision waypoint. Reassuring framing: the steep, slow climb can feel unusual — that's expected; precision on the speed is what keeps it safe.

Click Direct-To to advance to Short-field Landing.

FIM Ch 12 short-field landing. The standard (A4.5) is level 3: land at a nominated touchdown point at minimum speed, control balloon and bounce, maintain direction, maximum braking without locking the wheels, stop within the landing distance available.

FIM Ch 12: airspeed controlled with elevator, rate of descent with throttle; full flap; minimal float; judicious braking. The wind-gradient power point is straight from the FIM. Connect "control balloon and bounce" to the earlier landing lessons — the recovery for a balloon is the same, but the margin is smaller here.

FIM Ch 12 miss-landing / go-around: full take-off power, climb speed in the landing configuration first, raise flap in stages, expect large trim changes. This reinforces the go-around already taught in lesson 08 — here the trigger threshold is lower because the margins are smaller. Subject to the same climb-performance limits as the take-off (waypoint 1).

Click Direct-To to advance to Engine-Failure Revision.

A6.1 (manage engine failure - take-off, simulated), standard 2. FIM Ch 11: assume the gliding attitude very quickly owing to the lower climbing speed. The over-arching message: at VX you are closest to the stall, so the nose-down reaction must be faster and more positive than from a normal climb.

A6.2 (manage engine failure in the circuit area, simulated), standard 2. This ties directly to the glide-approach skill from lessons 08–09. NTS focus: managing the undesired aeroplane state, using checklists/SOPs, and clear communication under a non-normal situation — the HF & NTS items CASA lists for this lesson.

Click Direct-To to advance to the recap.

Each question uses a Bloom's action verb with a concrete anchor — the student should be able to answer all six before flying.