Certified Transport Registered Nurse Certification Practice Exam

What signals may indicate an impending decompression explosion on an aircraft?

1. Normal flight sounds and clear skies

2. Loud or unusual noise, flying debris in aircraft, fogging

3. Fluctuating cabin pressure only

4. Steady altitude and no signs of distress

The correct answer is: Loud or unusual noise, flying debris in aircraft, fogging

The identification of signals that may indicate an impending decompression explosion on an aircraft is critical for ensuring passenger and crew safety during flight. The chosen response highlights key indicators to watch for. A loud or unusual noise can signify changes to the aircraft structure, while flying debris within the cabin may indicate a breach that could lead to rapid decompression. Additionally, fogging is often associated with a significant change in cabin pressure and temperature due to the sudden release of air, which can lead to condensation. These signals collectively reflect a dangerous situation that requires immediate assessment and action. In contrast, normal flight sounds and clear skies do not suggest any issues; they imply a stable flight environment. Fluctuating cabin pressure alone does not provide enough context to predict an imminent decompression explosion without accompanying signs of distress. Lastly, a steady altitude and no signs of distress would typically indicate stable operation rather than a potential emergency, making it an unlikely indicator of an impending threat.