Md-11 flight crew reported that an engine pylon cover was found to be missing after arrival.

Attributes
ACN	1504463
Time
Date	201712
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Parked Cruise
Flight Plan	IFR
Component
Aircraft Component	Pylon Fasteners & Latches
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

After arriving at the hotel I received an email from [the] duty officer informing me that upon post-flight inspection of (the aircraft flown on my last flight) it was discovered that the #1 engine pylon aft mount was discovered missing. This was my first knowledge of the event. Apparently this is a tfoa; (things falling from aircraft). We were not aware of the event until being notified by the duty officer.

Original NASA ASRS Text

Title: MD-11 flight crew reported that an engine pylon cover was found to be missing after arrival.

Narrative: After arriving at the hotel I received an email from [the] Duty Officer informing me that upon post-flight inspection of (the aircraft flown on my last flight) it was discovered that the #1 engine pylon aft mount was discovered missing. This was my first knowledge of the event. Apparently this is a TFOA; (Things Falling From Aircraft). We were not aware of the event until being notified by the Duty Officer.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.