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Air Brake (Q Endorsement) Practice · Question

Scenario 223: Brake fade is most likely caused by:

Overheated drums and linings lose friction (brake fade); use engine/retarder braking and the correct lower gear on long descents. The correct answer is "Continu

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Question: Scenario 223: Brake fade is most likely caused by:

Answer options:

  • Cold brakes ✅ Continuous heavy use of service brakes on long downgrades, overheating drums and linings
  • Fresh slack adjusters
  • High oil pressure

Correct answer: Continuous heavy use of service brakes on long downgrades, overheating drums and linings

Explanation: Overheated drums and linings lose friction (brake fade); use engine/retarder braking and the correct lower gear on long descents. The correct answer is "Continuous heavy use of service brakes on long downgrades, overheating drums and linings". This capacity-fill scenario 223 reinforces the same competency for the airbrake bank and follows the certified explanation standard.

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