Q1
ATA 00 · 00 — 737 General
Which engine type powers the 737 MAX?
- A CFMI LEAP-1B turbofan
- B CFM56-5B turbofan
- C CFM56-7B turbofan
Reveal answer
Correct answer: A — CFMI LEAP-1B turbofan
Aircraft type rating
30 ATA chapters
Self-paced practice
Boeing 737NG to MAX Diff 737NG → 737 MAX differences practice questions
Differences-based practice questions for engineers and crews converting from the Boeing 737NG to the 737 MAX, organised by ATA chapter. Covers the LEAP-1B powerplant, flight-control and display changes and other MAX-specific systems. Samples are free to view; the full quiz needs a subscription.
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3 194
Questions in bank
30
ATA chapters
∞
Retake anytime
Differences focus
Chapters concentrate on what changed from the 737NG to the 737 MAX — efficient revision for a differences conversion.
LEAP-1B powerplant
The CFM LEAP-1B installation and its effects on the nacelle, pylon and indicating versus the NG CFM56-7B.
Timed, repeatable
Per-chapter timed practice with weak-area tracking, retake whenever you need.
What the Boeing 737NG to MAX Diff type training covers
The Boeing 737 MAX (MAX 7/8/9/10) is a differences type for personnel already qualified on the 737NG. This question bank reflects that approach: each chapter concentrates on the differences from the NG to the MAX rather than re-teaching common systems, so conversion study time is focused where it matters.
Coverage includes the re-engining with the CFM LEAP-1B and its larger fan — the nacelle, pylon and engine-indicating changes that follow — along with the revised flight-control behaviour, the updated display system, the Advanced Technology winglets, the electrical and hydraulic changes and the other MAX-specific system updates. Chapters are organised by ATA so the material maps onto the differences-course structure and the maintenance documentation.
Use this for 737NG-to-MAX conversion training or recurrent checks.
Sample questions below are drawn live from the Boeing 737NG to MAX Diff question bank of 3 194 questions across 30 ATA chapters. The full timed practice quiz is per-chapter and needs an active subscription.
ATA chapters in this type rating
Open chapter gridATA 00
00 — 737 General
106 questions
ATA 01
01 — Maintenance Documents
79 questions
ATA 21
21 — Air Conditioning
135 questions
ATA 24
24 — Electrical Power
37 questions
ATA 25
25 — Equipment & Furnishings
30 questions
ATA 26
26 — Fire Protection
104 questions
ATA 27
27 — Flight Controls
242 questions
ATA 28
28 — Fuel
57 questions
ATA 29
29 — Hydraulic Power
139 questions
ATA 30
30 — Ice & Rain Protection
74 questions
ATA 31
31 — Indicating / MAX Display System
309 questions
ATA 32
32 — Landing Gear
125 questions
ATA 33
33 — Lights
192 questions
ATA 34
34 — Navigation
134 questions
ATA 35
35 — Oxygen
22 questions
ATA 36
36 — Pneumatic
150 questions
ATA 38
38 — Water & Waste
76 questions
ATA 46
46 — Onboard Network / Information Systems
97 questions
ATA 49
49 — APU
85 questions
ATA 52
52 — Doors
23 questions
ATA 71
71 — Power Plant (LEAP-1B)
93 questions
ATA 72
72 — Engine (LEAP-1B)
128 questions
ATA 73
73 — Engine Fuel & Control (LEAP-1B)
142 questions
ATA 74
74 — Ignition (LEAP-1B)
45 questions
ATA 75
75 — Engine Air (LEAP-1B)
103 questions
ATA 76
76 — Engine Controls (LEAP-1B)
89 questions
ATA 77
77 — Engine Indicating (LEAP-1B)
96 questions
ATA 78
78 — Exhaust (LEAP-1B)
106 questions
ATA 79
79 — Oil (LEAP-1B)
88 questions
ATA 80
80 — Starting (LEAP-1B)
88 questions
8 free sample questions
One per chapter, spread across the type. Click "Reveal answer" after you've picked.
Q2
ATA 24 · 24 — Electrical Power
What voltage and frequency does each IDG on the 737 MAX supply to the AC electrical system?
- A 115/200V AC at 400 Hz
- B 115/200V AC at 60 Hz
- C 115/200V AC at 800 Hz
Reveal answer
Correct answer: A — 115/200V AC at 400 Hz
Q3
ATA 27 · 27 — Flight Controls
What are the two types of flight control systems on the 737 MAX?
- A Manual and automatic
- B Active and passive
- C Primary and secondary
Reveal answer
Correct answer: C — Primary and secondary
Q4
ATA 30 · 30 — Ice & Rain Protection
What is the primary source of heat for the wing anti-icing system on the 737 MAX?
- A Electric resistance heaters in the slat structure
- B Hot air from the pneumatic manifold
- C Bleed air from a dedicated wing anti-ice compressor
Reveal answer
Correct answer: B — Hot air from the pneumatic manifold
Q5
ATA 33 · 33 — Lights
What is the primary data bus protocol used to send color, brightness, scene and zone information to LED light assemblies in the 737 MAX passenger compartment?
- A CAN bus network
- B ARINC 429 data bus
- C TIA-485 serial data bus
Reveal answer
Correct answer: C — TIA-485 serial data bus
Q6
ATA 36 · 36 — Pneumatic
What is the primary purpose of the pneumatic system on the Boeing 737 MAX?
- A Provide hydraulic fluid pressure to flight controls
- B Cool the engine high-pressure compressor stages
- C Supply compressed air to airplane user systems
Reveal answer
Correct answer: C — Supply compressed air to airplane user systems
Q7
ATA 49 · 49 — APU
What model is the APU fitted to the Boeing 737 MAX?
- A Honeywell 131-9(B)
- B Pratt & Whitney APS 3200
- C Allied Signal GTCP 36-300
Reveal answer
Correct answer: A — Honeywell 131-9(B)
Q8
ATA 72 · 72 — Engine (LEAP-1B)
What type of engine is the LEAP-1B fitted to the Boeing 737 MAX?
- A A high bypass dual rotor axial flow turbofan
- B A low bypass single rotor turbojet
- C A geared turbofan with a single spool core
Reveal answer
Correct answer: A — A high bypass dual rotor axial flow turbofan
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Ready for the full Boeing 737NG to MAX Diff question bank?
Sign up, open the Boeing 737NG to MAX Diff chapter grid, and run a timed practice quiz on any ATA chapter from the 3 194-question bank. Your score is tracked across attempts and weak areas are surfaced so revision time pays off.
Other aircraft type ratings
Frequently asked questions
What is the 737NG to 737 MAX differences course?
It is the EASA Part-147 differences-training course that converts an engineer or pilot already type-rated on the 737NG onto the 737 MAX. Because the airframe is shared with significant system changes rather than a redesign, EASA recognises the MAX as a differences type on top of the NG rather than a brand-new type rating.
Do I need a 737NG type rating before the MAX?
Yes. The differences course assumes a current 737NG type rating. Without it the route is the full 737NG type-rating course first, then the NG-to-MAX differences. If you are not yet NG-rated, study the 737NG question bank first.
What is the LEAP-1B and how does it differ from the CFM56-7B?
The CFM LEAP-1B is the MAX-only engine — a higher-bypass, larger-fan-diameter design that delivers about 14% better fuel burn than the CFM56-7B on the NG. The larger fan required a longer nose landing gear, repositioned nacelles and a redesigned pylon; the engine indicating and FADEC behaviour also differs.
Is MCAS covered in this question bank?
Yes. The Manoeuvring Characteristics Augmentation System (MCAS) is covered in the flight-controls difference chapter, including its sensor sourcing, activation logic and the post-grounding software changes (multi-AoA input, single activation, pilot-override authority).
Are all MAX variants (7/8/9/10) included?
Yes. The MAX 7, MAX 8 (and MAX 8-200), MAX 9 and MAX 10 share the differences type rating and the question bank treats them collectively, with variant-specific notes where they apply (mostly fuselage length and landing-gear/lavatory details on the MAX 10).
Is this for maintenance engineers, pilots, or both?
The question bank is written for Part-66 maintenance personnel (Category B1.1 / B2) doing the NG-to-MAX differences training. Pilots have a separate differences syllabus focused on flight-deck and handling differences; while there is overlap on systems theory, this site is not designed for pilot type-rating preparation.
Can I practise in a language other than English?
Yes. Every quiz question, all of its answer options and the written explanation can be read in 13 languages besides English — Chinese (Traditional), French, German, Greek, Hindi, Italian, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish and Turkish. It is included for every signed-in member at no extra cost, and you can switch language in the middle of a quiz without losing your answers or your timer.
The English original stays one click away on every question, which is the point: the EASA Part-66 examination is sat in English, so you can read a question in your own language, answer it, then switch it back to English to check yourself against the wording you will actually meet.
Two caveats worth knowing. It is machine translation — checked so that no two answer options drift into meaning the same thing and that numerals and units survive intact, but it is not a human technical translation. And technical designations such as A320, LEAP-1A, Part-145, CS-25 and ATA chapter numbers are deliberately left in English, because those are the strings on the aircraft, in the manual and on the exam paper. Translation covers the quizzes; the study notes and reference pages are in English.