B737 flight crew reported a baggage cart made contact with the aircraft while parked at the gate.

Attributes
ACN	1597704
Time
Date	201811
Local Time Of Day	1801-2400
Place
Locale Reference	BOS.Airport
State Reference	MA
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Cowling/Nacelle Fasteners Latches
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 160 Flight Crew Total 6700 Flight Crew Type 2309
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 94 Flight Crew Total 15909 Flight Crew Type 14379
Events
Anomaly	Ground Event / Encounter Object

Narrative:

We had parked the aircraft at gate; received the chocks-in signal from the ground crew; and had sent the post flight [data]. Passengers had already started the deplaning process. The sun had already set and it was raining and windy. About four minutes after blocking in; the captain and myself felt a jolt to the aircraft while we were sitting in the flight deck. I opened my flight deck window to see if anything had happened on my side of the aircraft. I noticed a few ground personnel standing near the number 2 engine. I also noticed a bag cart that was not attached to any other vehicles near the engine. The captain and I decided to go out on the ramp to investigate what had happened. When we went outside; we noticed damage to the outside cowling of the number two engine from an apparent impact with the bag cart. We immediately went back up to the flight deck and proceeded to make a [logbook] entry and notify [maintenance controller] by verbal means as well.

Original NASA ASRS Text

Title: B737 flight crew reported a baggage cart made contact with the aircraft while parked at the gate.

Narrative: We had parked the aircraft at gate; received the chocks-in signal from the ground crew; and had sent the post flight [data]. Passengers had already started the deplaning process. The sun had already set and it was raining and windy. About four minutes after blocking in; the Captain and myself felt a jolt to the aircraft while we were sitting in the flight deck. I opened my flight deck window to see if anything had happened on my side of the aircraft. I noticed a few ground personnel standing near the number 2 engine. I also noticed a bag cart that was not attached to any other vehicles near the engine. The Captain and I decided to go out on the ramp to investigate what had happened. When we went outside; we noticed damage to the outside cowling of the number two engine from an apparent impact with the bag cart. We immediately went back up to the flight deck and proceeded to make a [logbook] entry and notify [Maintenance Controller] by verbal means as well.

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.