What is a key safety requirement when performing ground checks on thrust reversers?

What is a key safety requirement when performing ground checks on thrust reversers?

• A. Thrust reversers pose no hazards during ground checks.
• B. It is safe to perform ground checks with passengers on board.
• C. Reverser systems require no clearance or lockout prior to testing.
• D. Thrust reversers can move quickly with much force; personnel must remain clear during ground checks, and measures should be put in place to ensure that the system is not inadvertently energized.

Answer: (D)

Safety around thrust reversers hinges on recognizing their potential for rapid, powerful movement during ground checks. The reverser system can actuate quickly under hydraulic or electrical control, and a deployment or retraction can injure nearby personnel or cause damage if anyone is in the path. Because of that, the key precaution is to keep all personnel clear of the reverser area and to ensure the system cannot be energized during testing. This means isolating and securing all energy sources that could actuate the reversers, applying appropriate lockout or tagout devices, relieving any stored energy, and establishing a safe perimeter before any checks begin. Only after confirming that the system is fully de-energized and secured should ground checks proceed, with everyone staying clear of moving parts. It’s not correct to assume there are no hazards, to test with passengers on board, or to skip clearance and lockout prior to testing.

Safety around thrust reversers hinges on recognizing their potential for rapid, powerful movement during ground checks. The reverser system can actuate quickly under hydraulic or electrical control, and a deployment or retraction can injure nearby personnel or cause damage if anyone is in the path. Because of that, the key precaution is to keep all personnel clear of the reverser area and to ensure the system cannot be energized during testing. This means isolating and securing all energy sources that could actuate the reversers, applying appropriate lockout or tagout devices, relieving any stored energy, and establishing a safe perimeter before any checks begin. Only after confirming that the system is fully de-energized and secured should ground checks proceed, with everyone staying clear of moving parts. It’s not correct to assume there are no hazards, to test with passengers on board, or to skip clearance and lockout prior to testing.