Normally, the prop on a Bonanza is made of aluminum. Based on observation of prior incidents, I would expect no or negligible damage to an aluminum propeller i

Normally, the prop on a Bonanza is made of aluminum. Based on observation of prior incidents, I would expect no or negligible damage to an aluminum propeller in the same circumstance. However, even if no external damage is seen, some engine manufacturers (and insurers) require a complete engine teardown and inspection in the event the propeller contacts an object while the engine is running.