Drone exam · UAS general knowledge

After a hard landing, the aircraft starts normally and passes its software checks, but one arm has a fine crack near the motor mount. What should the pilot infer?

Answer

The aircraft should be removed from service until the structural damage is assessed and repaired or the part is replaced according to the manufacturer's guidance.

Explanation

Electronic diagnostics cannot prove that a cracked load bearing structure will remain intact under thrust, vibration, or another landing load.