EASA Module 7 Practice Questions - EASA Part-66 Module 07 - Maintenance Practices Exam - EASA Module 7 Practice Questions - EASA Part-66 Module 07

Question 1

When servicing an aircraft oxygen system, why is it critical that no oil, grease, or hydrocarbon contamination contacts the components?

Oil residue absorbs oxygen and reduces the available flow rate to the masks Hydrocarbons in contact with high-pressure oxygen can ignite or react violently, causing fire or explosion Grease increases the dielectric strength of the line and causes static discharge Oil causes the oxygen regulator diaphragm to swell and stick open

Correct Answer:

Hydrocarbons in contact with high-pressure oxygen can ignite or react violently, causing fire or explosion

Question 2

An electrical fire breaks out in an avionics rack. Which extinguishing agent is most appropriate because it is electrically non-conducting and leaves no residue?

Water (Class A agent) on energised electrical equipment, creating shock and short-circuit risk. Halon / clean-agent (or CO2) suitable for Class C electrical fires Foam (AFFF) on live avionics, where conductive foam can spread damage and shock risk. Dry chemical powder (ABC) on energised racks, leaving conductive residue that harms avionics.

Correct Answer:

Halon / clean-agent (or CO2) suitable for Class C electrical fires

Question 3

Before working on an aircraft electrical circuit, the FIRST safety action a technician should normally take is to:

Apply external ground power to keep the busbars energised for testing Discharge any capacitors by short-circuiting them to the airframe with a screwdriver Connect a multimeter across the busbar to read the live voltage Isolate the supply by disconnecting/removing the battery and tagging the circuit as inoperative

Correct Answer:

Isolate the supply by disconnecting/removing the battery and tagging the circuit as inoperative

Question 4

A Class B fire on an aircraft involves which of the following?

Flammable liquids such as fuel, oil, hydraulic fluid, and solvents Ordinary combustibles such as paper, wood, and fabric Energised electrical equipment and wiring contrary to the approved maintenance procedure for this task. Combustible metals such as magnesium contrary to the approved maintenance procedure for this task.

Correct Answer:

Flammable liquids such as fuel, oil, hydraulic fluid, and solvents

Question 5

When handling solvents and chemical cleaning agents in the workshop, the primary purpose of consulting the Safety Data Sheet (SDS/MSDS) is to:

Determine the shelf-life expiry date for stores accounting Find the manufacturer's part number for re-ordering Identify the hazards, required personal protective equipment, and first-aid/spill measures for the substance Establish the correct torque value for the container cap

Correct Answer:

Identify the hazards, required personal protective equipment, and first-aid/spill measures for the substance

Exam overview

About this Exam

Prepare with the EASA Module 7 Practice Questions - EASA Part-66 Module 07 - Maintenance Practices Exam practice quiz. This question bank includes 100 questions covering aircraft, torque, because, technician, and electrical. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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EASA Module 7 Practice Questions - EASA Part-66 Module 07 - Maintenance Practices Exam

This practice set contains 100 questions from the matching question bank and focuses on aircraft, torque, because, technician, and electrical. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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EASA Module 7 Practice Questions - EASA Part-66 Module 07 - Maintenance Practices Exam

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