033 ATPL subject guide
Flight Planning and Monitoring
Flight Planning and Monitoring is one of the most demanding ATPL subjects because it blends routing, fuel, alternates, regulations, and calculation accuracy in one exam.
- Subject code
- 033
- Difficulty
- Very Hard
- Key topics
- 3
Worked example questions
Independently authored revision questions in the same multiple-choice format as the exam. Try each one before opening the answer.
Worked example: choosing a cruising level
Not quite. The correct answer is B.
Correct answer: B
- A. A trap for reversed hemispheres: FL310 is an odd level, used by IFR traffic on magnetic tracks from 000 to 179 degrees.
- B. Correct. A magnetic track of 265 degrees falls in the 180 to 359 band, which takes even flight levels under the semicircular rule, and FL320 is available in RVSM airspace.
- C. Odd level again, so it belongs to the eastbound half. Reading 265 as roughly east because it is a large number is a surprisingly common slip.
- D. Also an odd, eastbound level. If two options share the same logic (here C and D), that logic usually marks the distractor family, not the answer.
Step by step
- Place the magnetic track in its semicircle: 265 degrees sits between 180 and 359, the westbound half.
- Westbound IFR traffic takes even flight levels, eastbound takes odd.
- Of the options, only FL320 is an even level, so it is the only candidate that fits the rule.
Worked example: an in-flight fuel check
Not quite. The correct answer is B.
Correct answer: B
- A. This is the remaining trip fuel alone. It forgets that you must still be carrying final reserve when you land.
- B. Correct: 2 hours at 1200 kg per hour is 2400 kg of trip fuel, plus the 900 kg final reserve you must still have at destination.
- C. This comes from dividing 420 NM by the TAS of 240 kt (1.75 hours) instead of the groundspeed. Distance over the ground is always flown at groundspeed.
- D. This adds 5 per cent contingency to the remaining trip fuel. Contingency is a planning-stage quantity; the in-flight comparison is simply trip fuel remaining plus final reserve.
Step by step
- Groundspeed first: 240 kt TAS minus the 30 kt headwind gives 210 kt.
- Time to run: 420 NM at 210 kt is exactly 2 hours.
- Trip fuel remaining: 2 hours at 1200 kg per hour is 2400 kg.
- Add the protected quantity: 2400 kg plus the 900 kg final reserve gives a 3300 kg minimum now.
What this subject asks of you
It rewards disciplined process more than intuition.
What the paper tests
High calculation and procedure loadWhy it matters
Students must connect operational rules with fuel planning, critical points, routing decisions, and form completion under time pressure.Best next step
Use timed practice and spaced recall together so weak areas come back before they decay.
Compare ATPL subject difficulty
Compare ATPL subject difficulty
Key topics
ICAO flight plan form and route notation
Fuel planning, alternates, contingency, and final reserve logic
PNR, PSR, drift, wind correction, and en-route monitoring
How to study it
- Use worked examples to build one repeatable flow for each question type.
- Separate fuel-policy questions from navigation-calculation questions during revision so you do not mix methods.
- Keep formula sheets visible until the relationship between variables becomes natural.
Where Flight Planning and Monitoring candidates lose marks
Common traps
- Dropping or double-counting a fuel component.
- Applying the right formula to the wrong leg or time basis.
- Letting form-completion details become an afterthought instead of a scoring area.
The hardest Flight Planning and Monitoring exam areas
Where candidates actually lose marks in 033, and why.
Point of equal time and point of safe return
The formulas are simple, but the wind component reverses between the outbound and return legs, and most dropped marks come from applying the wind in one direction only or from mixing up which groundspeed belongs in the numerator.The fuel policy structure
Contingency, alternate, final reserve, additional, and extra fuel have precise, different definitions. Exam stems love asking which quantity covers a given scenario, and the names are similar enough that half-learned definitions collapse under time pressure.In-flight replanning arithmetic
Revised groundspeeds, ETAs, and fuel-remaining comparisons are individually easy, but the exam chains three or four of them into one stem. A single early slip, like using TAS instead of groundspeed, silently corrupts every later step.
Frequently asked questions
Is Flight Planning the hardest ATPL subject?
Is Flight Planning the hardest ATPL subject?
How do I get better at ATPL Flight Planning?
How do I get better at ATPL Flight Planning?
Flight Planning and Monitoring topic deep dives
Flight Planning and Monitoring topic deep dives
Focused guides to the 033 topics students search for most, each with a fully worked example and the common mistakes.
Topic guide
Point of Equal Time (PET)
How to find the ATPL point of equal time: the PET formula, why the wind reverses on the return leg, a fully worked example, and the classic exam traps.
Read the guideTopic guide
Point of Safe Return (PSR)
The ATPL point of safe return made clear: the PSR endurance formula, how it differs from PET, a worked example with exact numbers, and common exam traps.
Read the guideTopic guide
EASA Fuel Planning
EASA fuel planning for the ATPL exam: taxi, trip, contingency, alternate, final reserve, additional and extra fuel, with a worked minimum-fuel example.
Read the guideTopic guide
The ICAO Flight Plan Form
The ICAO ATS flight plan explained for ATPL: flight rules letters I, V, Y and Z, the key items examiners test, speeds and levels, and a worked example.
Read the guideFree tools for this subject
Free tools for this subject
Practise what Flight Planning and Monitoring tests, free and without an account.
Free tool
Wind Component Calculator
The trigonometry behind drift, groundspeed and runway choice: split any wind into headwind and crosswind and check your clock-code estimate.
Open the toolFree tool
Aviation Unit Converter
Fuel planning mixes litres, kilograms, pounds and gallons in one question. Convert them fast, with the density step made explicit.
Open the toolFree tool
METAR & TAF Decoder
Alternate and fuel decisions start with the forecast. Decode live TAFs and practise reading TEMPO, BECMG and PROB groups at real airports.
Open the toolFree tool
EASA Fuel Planning Calculator
Build a full EASA block fuel figure from taxi, trip, contingency, destination alternate, final reserve and extra, citing CAT.OP.MPA.181, including the isolated-aerodrome case.
Open the toolFree tool
Top of Descent Calculator
Monitoring the descent is a scoring area on its own. Get TOD distance, required rate of descent, path angle and descent time, then check the result against the rule of three.
Open the toolQuestion bank
Practice Flight Planning and Monitoring questions
Exam-style 033 Flight Planning and Monitoring questions with explanations, spaced repetition, and timed mock exams. Free to start.
Start practisingRelated ATPL subjects
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Read guideTurn Flight Planning and Monitoring revision into actual practice.
The SkyStudy question bank turns Flight Planning and Monitoring revision into practice.
Exam-style questions, mock exams, spaced repetition and progress tracking.
Subject knowledge becomes exam performance instead of passive reading.