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Aircraft type rating 23 ATA chapters Self-paced practice

Airbus A320 to A330 Diff A320 → A330 differences practice questions

Differences-based practice questions for engineers and crews moving from the Airbus A320 family to the widebody A330, organised by ATA chapter. Covers the scale-up in systems and the Rolls-Royce Trent 700 powerplant. Samples are free to view; the full quiz needs a subscription.

Take the timed practice quiz Browse all chapters
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2 392
Questions in bank
23
ATA chapters
∞
Retake anytime
Differences focus

Chapters concentrate on what changes moving from the single-aisle A320 to the twin-aisle A330 — focused conversion revision.

Trent 700 powerplant

The Rolls-Royce Trent 700 installation, its controls and indicating — new ground for crews coming off the A320.

Timed, repeatable

Per-chapter timed practice with weak-area tracking, retake as often as you like.

What the Airbus A320 to A330 Diff type training covers

The Airbus A330 is a long-range widebody, and crews and engineers converting from the A320 family study it as a differences type. This question bank follows that course: each chapter concentrates on the differences from the A320 to the A330 — the move from a single-aisle to a twin-aisle aircraft, larger and additional systems, and the long-range operational considerations — rather than re-teaching the shared Airbus fly-by-wire philosophy.

Coverage includes the scaled-up air conditioning and pressurisation, the larger electrical and hydraulic systems, the expanded fuel system, the landing gear and structural differences, and the powerplant. The engine for this course is the Rolls-Royce Trent 700 — a three-shaft high-bypass turbofan that is entirely new ground for personnel coming off the CFM56/V2500-powered A320. Chapters are organised by ATA so the material maps onto the differences-course structure.

Use this for A320-to-A330 conversion training or recurrent checks.

Sample questions below are drawn live from the Airbus A320 to A330 Diff question bank of 2 392 questions across 23 ATA chapters. The full timed practice quiz is per-chapter and needs an active subscription.

ATA chapters in this type rating

Open chapter grid
ATA 00-51
00/51 — Intro & Structures
77 questions
ATA 21
21 — Air Conditioning
159 questions
ATA 22
22 — Auto Flight
97 questions
ATA 23
23 — Communications
68 questions
ATA 24
24 — Electrical Power
131 questions
ATA 25
25 — Equipment & Furnishings
103 questions
ATA 26
26 — Fire Protection
72 questions
ATA 27
27 — Flight Controls
134 questions
ATA 28
28 — Fuel
168 questions
ATA 29
29 — Hydraulic Power
164 questions
ATA 30
30 — Ice & Rain Protection
79 questions
ATA 31
31 — Indicating / Recording
88 questions
ATA 32
32 — Landing Gear
145 questions
ATA 33
33 — Lights
49 questions
ATA 34
34 — Navigation
66 questions
ATA 35
35 — Oxygen
39 questions
ATA 36
36 — Pneumatics
93 questions
ATA 38
38 — Water & Waste
99 questions
ATA 45
45 — Onboard Maintenance
107 questions
ATA 47
47 — Fuel Tank Inerting
55 questions
ATA 49
49 — APU
83 questions
ATA 52
52 — Doors
76 questions
ATA 71-80
71-80 — RR Trent 700 Engine
240 questions

8 free sample questions

One per chapter, spread across the type. Click "Reveal answer" after you've picked.

Take the timed practice quiz
Q1 ATA 00-51 · 00/51 — Intro & Structures

How many major zones is the A330 airframe divided into for maintenance and component location?

  1. A Ten major zones numbered 100 to 1000
  2. B Six major zones numbered 100 to 600
  3. C Eight major zones numbered 100 to 800
Reveal answer Hide answer
Correct answer: C — Eight major zones numbered 100 to 800
Q2 ATA 22 · 22 — Auto Flight

What are the three major functions provided by the Auto Flight System via the FMGECs on the A330?

  1. A Flight Management, Flight Control and Flight Protection
  2. B Flight Navigation, Flight Director and Flight Envelope
  3. C Flight Management, Flight Guidance and Flight Envelope
Reveal answer Hide answer
Correct answer: C — Flight Management, Flight Guidance and Flight Envelope
Q3 ATA 24 · 24 — Electrical Power

Where is the Constant Speed Motor/Generator (CSM/G) installed on the A330?

  1. A In the avionics compartment
  2. B In the main landing gear wheel well
  3. C In the APU compartment
Reveal answer Hide answer
Correct answer: B — In the main landing gear wheel well
Q4 ATA 26 · 26 — Fire Protection

How many independent detection loops does the RR Trent 700 engine fire detection system use per engine?

  1. A One single loop divided into four zones around the engine core
  2. B Two independent loops (A and B) connected in parallel to the FDU
  3. C Three loops in a majority-vote configuration for improved reliability
Reveal answer Hide answer
Correct answer: B — Two independent loops (A and B) connected in parallel to the FDU
Q5 ATA 28 · 28 — Fuel

On the A330-200, fuel is stored in how many tanks in total?

  1. A Five tanks: two outer, two inner, and one trim
  2. B Four tanks: two inner, one center, and one trim
  3. C Six tanks: two outer, two inner, one center, and one trim
Reveal answer Hide answer
Correct answer: C — Six tanks: two outer, two inner, one center, and one trim
Q6 ATA 30 · 30 — Ice & Rain Protection

Which areas of the A330 ice and rain protection system are heated by bleed air rather than electrically?

  1. A Water installation lines and escape-slide locking plate assemblies
  2. B Wing slat leading edges and engine air intake nose cowl lips
  3. C Cockpit windows and all pitot-static probes installed on the fuselage
Reveal answer Hide answer
Correct answer: B — Wing slat leading edges and engine air intake nose cowl lips
Q7 ATA 32 · 32 — Landing Gear

What type of shock absorber is fitted to each main landing gear leg on the A330?

  1. A An inverted oleo-pneumatic unit installed in the main fitting
  2. B A conventional oleo-pneumatic strut attached to the bogie beam
  3. C A dual-stage nitrogen-only unit housed in the side stay assembly
Reveal answer Hide answer
Correct answer: A — An inverted oleo-pneumatic unit installed in the main fitting
Q8 ATA 34 · 34 — Navigation

In the A330, how many Radio Management Panels (RMPs) are installed?

  1. A Three, one for captain, one for first officer, and one third unit
  2. B Four, including one dedicated backup panel at the centre console
  3. C Two, one for captain and one for first officer only
Reveal answer Hide answer
Correct answer: A — Three, one for captain, one for first officer, and one third unit
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Frequently asked questions

What is the A320 to A330 differences course?
It is a Part-147 differences-training course that takes engineers already type-rated on the A320 family and qualifies them on the widebody A330. Airbus designed the A320 and A330 to share the same flight-deck philosophy and fly-by-wire control laws, which makes a differences route possible rather than a full new type rating.
Do I need an A320 type rating first?
Yes. The differences course assumes a current A320 family (CEO or neo) type rating. Without it the route is a full A330 type-rating course. If you are not yet A320-rated, study the A320 CEO question bank first.
What engine is covered in this question bank?
The Rolls-Royce Trent 700 — a three-shaft high-bypass turbofan and the most common engine choice on the A330ceo. Its architecture and indicating differ substantially from the CFM56-5B/V2500 fitted to the A320 CEO, so the powerplant ATA chapters cover this engine in full rather than as a difference.
How does the A330 differ from the A320 from a maintenance point of view?
The differences are mostly scale and additional systems rather than philosophy: a much larger air conditioning and pressurisation pack count, larger and additional hydraulic systems, a more complex fuel system with centre and trim tanks, an extended-range landing gear, additional water/waste systems, and the long-range operational equipment (ETOPS certification, additional batteries, etc.).
Are A330-200 and A330-300 both covered?
Yes — both variants share the same type rating and the question bank treats them together, with notes where the -200 (shorter fuselage, longer range, larger fin) and -300 (longer fuselage, higher capacity) differ.
Does this cover the A330neo (Trent 7000)?
No. The A330neo (A330-800/-900) uses the Rolls-Royce Trent 7000 and is treated by EASA as a further differences endorsement on top of the A330ceo. This question bank focuses on the A320-to-A330ceo differences with the Trent 700 powerplant.

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