Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Total 829
Aircraft Equipment Problem Critical
General None Reported / Taken
We landed on Runway 27R in ZZZ. The landing; runway exit; taxi in to Gate and parking were all normal. After the passengers deplaned; I was advised that ZZZ maintenance and the ground crew discovered damage to the left engine. The water service panel door was torn away from the fuselage and they found it in or near the engine. Before departing the aircraft; I made a write up in the Aircraft Maintenance Log and telephoned Dispatch and [Technical Operations]. Local [Company] Operations advised ATC of the possibility of FOD on the runway and/or taxiways.We are unsure why this event occurred. None of the flight or cabin crew can recall any adverse engine indications; engine noise or vibrations at any time during the flight.
After a very routine flight and landing; and after gate arrival at ZZZ; maintenance personnel advised they had found left engine damage and the potable water access door missing. Made a log book entry; notified Dispatch and Tech.
Air carrier flight crew reported Maintenance found damage to service door and engine of aircraft after taxi-in to gate.