100+ Free CAAB AME B2 Exam Practice Questions

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Sample CAAB AME B2 Exam Practice Questions

Try these sample questions to test your CAAB AME B2 Exam exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary function of the yaw damper system in modern transport aircraft?

A.To assist the pilot in executing coordinated turns

B.To suppress the Dutch roll aerodynamic instability

C.To prevent high-speed spiral divergence

D.To maintain wings-level flight during autopilot engagement

Explanation: The yaw damper system detects yaw rate changes using rate gyroscopes or accelerometers and automatically applies rudder corrections to damp out 'Dutch roll', an aerodynamic instability consisting of out-of-phase rolling and yawing motions.

2An aircraft is tracking an ILS Glide Path of 3.0 degrees. Using the standard rule of thumb, at a distance of 3 nautical miles from the touchdown zone, what should the aircraft's approximate altitude be above the touchdown zone?

A.600 feet

B.900 feet

C.1,200 feet

D.1,500 feet

Explanation: Under standard glide slope conditions (3 degrees), the altitude slope is approximately 300 feet per nautical mile. Therefore, at 3 NM, the altitude should be 3 NM * 300 feet/NM = 900 feet (more precisely: 3 * 6076 * tan(3) = 955 feet).

3In an autopilot loop control system, which components form the 'inner loop' stabilization control?

A.Flight Director, Autopilot Computer, and Servomotor

B.Rate Gyros/Accelerometers, Autopilot Computer, and Control Surface Actuators

C.Air Data Computer, Flight Management System, and Autopilot Computer

D.VOR/ILS Receivers, Autopilot Computer, and Flight Director

Explanation: The inner loop of an autopilot system is responsible for attitude stabilization. It senses short-term aircraft dynamics using rate gyroscopes and accelerometers, processes them in the autopilot computer, and commands actuators to damp out oscillations and maintain pitch, roll, and yaw attitude.

4Under the 8.33 kHz VHF channel-spacing standard, the displayed channel designators do not equal the actual carrier frequency. What is the correct sequence of 6-digit channel designators that follow 118.000?

A.118.000, then 118.008, then 118.016 (each step equals the true 8.33 kHz frequency increment)

B.118.000, then 118.005, then 118.010 (three 8.33 kHz channels replace each 25 kHz channel)

C.118.000, then 118.025, then 118.050 (channels remain spaced 25 kHz apart)

D.118.000, then 118.033, then 118.066 (designators step in multiples of 33)

Explanation: The 8.33 kHz scheme provides three channels for every former 25 kHz channel, but the displayed designators are standardized labels, not the true frequencies. After 118.000 the designators are 118.005 and 118.010; the channel shown as 118.005 actually transmits on 118.00833 MHz, and 118.010 transmits on 118.01666 MHz. The next 25 kHz boundary is reached again at 118.025.

5Which ionospheric layer is primarily responsible for reflecting high-frequency (HF) radio waves back to Earth during daytime operations?

A.D layer

B.E layer

C.F1 and F2 layers

D.Troposphere layer

Explanation: During the day, solar radiation splits the F layer into F1 and F2 layers which provide the highest reflection altitude for HF waves. These layers are responsible for long-distance daytime skip communication, while the D layer tends to absorb lower HF frequencies.

6How does an aircraft's SELCAL (Selective Calling) system notify the flight crew of an incoming communication?

A.It automatically transmits a voice response acknowledging the call

B.It decodes a specific two-plus-two tone code and activates a visual chime on the flight deck

C.It displays the caller's ID and contact number on the PFD

D.It flashes the landing lights to signal the aircraft from the ground

Explanation: A SELCAL system monitors HF/VHF voice channels and decodes a specific four-letter audio tone sequence (two pairs of simultaneous tones) assigned to that specific aircraft. When matched, it sounds an audio chime and illuminates a call indicator light on the flight deck.

7Emergency Locator Transmitters (ELTs) are designed to transmit digital distress data to search and rescue satellites on which primary frequency?

A.121.5 MHz

B.243.0 MHz

C.406.025 MHz

D.1090 MHz

Explanation: Modern ELTs transmit digital data bursts containing aircraft identification and GPS coordinates on the 406 MHz (specifically 406.025 MHz or similar) frequency to the Cospas-Sarsat satellite system. They may also transmit a low-power homing signal on 121.5 MHz for local search teams.

8What is the frequency range allocated for VOR (VHF Omnidirectional Range) navigation systems?

A.108.00 MHz to 117.95 MHz

B.329.15 MHz to 335.00 MHz

C.962 MHz to 1213 MHz

D.108.10 MHz to 111.95 MHz

Explanation: VOR operates in the VHF band between 108.00 MHz and 117.95 MHz. The lower portion (108.00 to 111.95 MHz) is shared with ILS localizers, using even-tenths decimal frequencies for VOR stations.

9How does a VOR receiver determine the aircraft's bearing (radial) from a ground station?

A.By measuring the time delay between a pulse transmission and reception

B.By comparing the phase angle between a 30 Hz reference signal and a 30 Hz variable phase signal

C.By sensing the null point of a rotating loop antenna

D.By comparing the signal strength of four overlapping antenna lobes

Explanation: A VOR ground station transmits two 30 Hz signals: a reference signal (FM modulated on a subcarrier, transmitted omnidirectionally) and a variable signal (AM modulated, rotated electronically). The phase difference in degrees between these two signals matches the bearing of the aircraft relative to magnetic north.

10Which audio tone modulation frequencies are used by the ILS Localizer to determine lateral deviation from the runway centerline?

A.30 Hz and 90 Hz

B.90 Hz and 150 Hz

C.150 Hz and 400 Hz

D.400 Hz and 1300 Hz

Explanation: The ILS Localizer transmitter projects two overlapping lobes modulated with 90 Hz (left of centerline) and 150 Hz (right of centerline). The receiver compares the Difference in Depth of Modulation (DDM) of these tones to calculate lateral deviation.

About the CAAB AME B2 Exam Exam

The CAAB Aircraft Maintenance Engineer (AME) Category B2 licence allows the holder to certify maintenance on aircraft avionic and electrical systems, including autopilot, flight controls, instrument indications, communications, radar, and navigation systems. Candidates must pass theoretical module examinations under ANO Part-66 and meet experience requirements before certifying staff privileges are granted.

Assessment

Basic-knowledge modular examinations consisting of multiple-choice questions (MCQs), with some modules (9, 10) requiring supplementary essay questions. This practice bank covers core syllabus modules (Module 13, Module 5, Module 14, Module 9, and Module 10) for Category B2 Avionics.

Time Limit

MCQ modules are timed at approximately 75 seconds per question under the ANO Part-66 standard, with essay papers timed separately.

Passing Score

A minimum of 75 percent is required on each MCQ module exam. Essay papers are graded on a separate pass/fail standard.

Exam Fee

Per-module fees are set by CAAB's Airworthiness and Engineering Licensing Division. Check directly with CAAB or your approved Part-147 training organization for the latest fee structures. (Civil Aviation Authority of Bangladesh (CAAB))

CAAB AME B2 Exam Exam Content Outline

40%

ANO Part-66 Module 13 (Aircraft Aerodynamics, Structures and Systems)

Theory of flight, structures, autoflight, communications, navigation, electrical power, instruments, and on-board maintenance systems.

20%

ANO Part-66 Module 5 (Digital Techniques/Electronic Instrument Systems)

Data buses, logic circuits, microprocessors, fiber optics, electromagnetic environment, and electronic displays.

15%

ANO Part-66 Module 14 (Propulsion)

Turbine engine principles, engine control (FADEC), indicators, and power distribution.

10%

ANO Part-66 Module 9 (Human Factors)

Dirty Dozen, cognitive/physical performance, fatigue, stress, workplace layout, communication, error models, and teamwork.

15%

ANO Part-66 Module 10 (Aviation Legislation)

CAAB regulatory framework, Civil Aviation Rules 1984/2024, ANO Part-66 and Part-145 certification, CRS, MEL, ADs, and logbook rules.

How to Pass the CAAB AME B2 Exam Exam

What You Need to Know

Passing score: A minimum of 75 percent is required on each MCQ module exam. Essay papers are graded on a separate pass/fail standard.
Assessment: Basic-knowledge modular examinations consisting of multiple-choice questions (MCQs), with some modules (9, 10) requiring supplementary essay questions. This practice bank covers core syllabus modules (Module 13, Module 5, Module 14, Module 9, and Module 10) for Category B2 Avionics.
Time limit: MCQ modules are timed at approximately 75 seconds per question under the ANO Part-66 standard, with essay papers timed separately.
Exam fee: Per-module fees are set by CAAB's Airworthiness and Engineering Licensing Division. Check directly with CAAB or your approved Part-147 training organization for the latest fee structures.

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

CAAB AME B2 Exam Study Tips from Top Performers

1Dedicate significant study time to Module 13, which is the largest and most comprehensive B2 module, covering a vast range of avionics and electrical systems integration.

2Practice digital number conversions (binary, octal, hexadecimal, BCD) and understand logic gate circuits for Module 5.

3Thoroughly review CAAB Civil Aviation Rules (CAR) 1984/2024, ANO Part-66/145/147 requirements, and Certificate of Release to Service (CRS) protocols for Module 10.

4Do not underestimate Module 9 (Human Factors); focus on cognitive limitations, the 'Dirty Dozen' maintenance errors, and communication structures.

Frequently Asked Questions

What is the difference between B1 and B2 AME licences under CAAB?

The Category B1 licence covers mechanical aspects of the aircraft including airframe, engine, and electrical systems, allowing only minor avionics troubleshooting. The Category B2 licence is dedicated to avionic systems, covering radar, communications, instruments, autopilot, flight controls, and electrical power integration.

What is the passing criteria for CAAB AME examinations?

Candidates must achieve at least 75 percent in the multiple-choice question paper for each module. If a module has a required essay component (such as Modules 9 and 10), the essay is graded on a separate pass/fail basis, and both parts must be passed to clear the module.

What are the experience requirements for a B2 Avionics licence in Bangladesh?

For graduates of a CAAB-approved Part-147 training organization (such as BATC), a minimum of 3 years of practical aircraft maintenance experience is required. For individuals taking the self-study/modular route without approved training, a minimum of 5 years of experience is required.

Are there calculations on the B2 modular examinations?

Yes. Modules such as Module 5 (Digital Techniques) and Module 13/14 involve calculations related to digital data formats, binary/hexadecimal conversions, logic gate truth tables, electrical impedance, and aerodynamic forces.