Unit 5 - Painting and finishing

• Engels
• MBO
• Studiejaar 2

Unit 5 - Painting and finishing

Lesson goals 

• Learn about the modal verbs list 
• Learn about aircraft painting and finishing 
• Rehearse reading strategies  

Answers

1. What are the primary functions of a Boeing 747’s hydraulic system?

Answer: The hydraulic system powers essential components like the landing gear, flight control surfaces, and braking systems.

2. Why is it important to replace seals in hydraulic systems during repair, even if the primary issue is a leaking hydraulic line?

Answer: Seals may also degrade over time, leading to potential future leaks. Replacing them ensures the system remains leak-free and operational.

3. During troubleshooting, why is it essential to use diagnostic tools like multimeters or oscilloscopes?

Answer: These tools help technicians accurately measure electrical signals, such as voltage, current, or continuity, which aids in identifying faults like poor connections or short circuits.

4. What is non-destructive testing (NDT), and why is it used during the overhaul of structural components?

Answer: NDT involves inspecting materials for defects without causing damage. Techniques like ultrasonic and eddy current testing are used to detect internal flaws like corrosion or cracks.

Answers

5. What critical steps should be followed when reassembling components after repair?

Answer: Ensure all components are correctly aligned, torqued to specification, and that no foreign objects remain within the assembly. Follow manufacturer guidelines closely.

6. What might be the root cause of an electrical fault in cabin lighting, and how would you confirm this?

Answer: Common causes include faulty wiring or loose connections. Confirmation can be achieved by tracing the wiring and testing it for continuity and secure connections.

7. Why is it important to use certified replacement parts during overhauls?

Answer: Certified parts meet safety and performance standards required by aviation authorities, ensuring the aircraft remains airworthy.

8. What is the purpose of documenting repairs and overhauls in the aircraft’s maintenance log?

Answer: Documentation provides a record for traceability, regulatory compliance, and future reference for maintenance activities.

Answers

9. What could be the consequences of failing to troubleshoot a hydraulic system leak properly?

Answer: A failed hydraulic system could result in the inability to operate critical systems like landing gear or flight controls, leading to potential safety hazards.

10. What are the safety precautions to consider when handling hydraulic systems under pressure?

Answer: Technicians should release pressure before working on the system, wear protective equipment, and avoid direct contact with high-pressure fluid that could cause injury.

11. How can corrosion affect the structural integrity of an aircraft’s wing spars?

Answer: Corrosion weakens metal, reducing its load-bearing capacity and potentially leading to structural failure under stress.

12. What types of diagnostic tools are used to test hydraulic system performance after a repair?

Answer: Hydraulic pressure gauges and flow meters are typically used to ensure the system operates within specified parameters.

Answers

13. What is the role of quality control during the overhaul process?

Answer: Quality control ensures that every step of the overhaul meets safety and performance standards, preventing future failures.

14. When troubleshooting an electrical fault, why is it necessary to isolate the problem area systematically?

Answer: Isolating the problem prevents misdiagnosis and ensures the technician addresses the root cause rather than treating symptoms.

15. What regulatory bodies set the standards for aircraft maintenance procedures, and why must technicians adhere to them?

Answer: Regulatory bodies like the FAA (Federal Aviation Administration) and EASA (European Union Aviation Safety Agency) set standards to ensure aircraft safety. Adherence is mandatory for legal compliance and safety assurance.

Modal verbs list

Modal verbs list

promova.com

The pilot ___ check the weather before takeoff.

1. can
2. should
3. might
4. must

Passengers ___ wear seatbelts during takeoff.

1. could
2. might
3. must
4. can

The aircraft ___ be able to withstand turbulence.

1. might
2. must
3. should
4. could

The flight attendant ___ assist you with luggage.

1. must
2. should
3. can
4. might

She _____ speak three languages fluently.

1. might
2. can
3. must
4. should

He _____ come to the party if he wants.

1. cannot
2. must
3. should
4. may

Reading: Painting and Finising

• Go to Canvas -> Modules 
• Read Unit 5 - Painting and Finishing
• After reading Unit 5, make the Unit 5 Quiz
• Homework: Unit 5 workbook (ex. 1 until 3)