While taxiing an airplane, if there is any doubt about clearance from an obstacle,_______ the airplane and_______.

• A. Stop, check the clearance
• B. Proceed, check the clearance
• C. Slow, check the clearance
• D. Ignore, proceed

Answer: (A)

When taxiing, safety around obstacles depends on being sure you can pass with aSafe margin. If there is any doubt about clearance from an obstacle, you must stop the aircraft and check the clearance. Stopping gives you a moment to verify your exact position, review the intended path on the airport chart, confirm any updated taxi instructions from ATC, and visually assess the obstacle and your wingtip and fuselage clearance. Only after confirming a clear path should you proceed.

Continuing to move while unsure increases the risk of striking the obstacle or creating an incident. Slowing down without stopping doesn’t remove the risk, and ignoring the doubt is plainly unsafe.