Narrative:

I was working approach/departure when the event occurred. Aircraft X was transitioning through ZZZ airspace enroute to ZZZ1. When they were about 13 miles southwest of ZZZ; I noticed their altitude drop a few hundred feet. I was about to verify with the pilot that they were on course; level at 5;000 feet; and give them the current altimeter; when the pilot called up. He said he needed to land immediately. I got him direct and then asked him what the nature of the [event] was. He said his door flew off and he lost a finger during the incident. I asked him how many people on board and fuel remaining. He said just himself on board and a little over 3 hours of fuel. He couldn't keep his altitude high enough for the ILS approach; so I kept him direct the field until he got it in sight. We got the emergency vehicles in their standby positions along with medical services. I coordinated with local control that he was cleared to land. I then relayed to him that tower advises he was cleared to land runway xx ZZZ. He landed without issue and taxied into the FBO and the vehicles followed him.

Google
 

Original NASA ASRS Text

Title: A Controller reported a pilot requested an immediate landing from ATC when the aircraft door flew off and the pilot's finger was severed.

Narrative: I was working approach/departure when the event occurred. Aircraft X was transitioning through ZZZ airspace enroute to ZZZ1. When they were about 13 miles southwest of ZZZ; I noticed their altitude drop a few hundred feet. I was about to verify with the pilot that they were on course; level at 5;000 feet; and give them the current altimeter; when the pilot called up. He said he needed to land immediately. I got him direct and then asked him what the nature of the [event] was. He said his door flew off and he lost a finger during the incident. I asked him how many people on board and fuel remaining. He said just himself on board and a little over 3 hours of fuel. He couldn't keep his altitude high enough for the ILS approach; so I kept him direct the field until he got it in sight. We got the emergency vehicles in their standby positions along with medical services. I coordinated with Local Control that he was cleared to land. I then relayed to him that Tower advises he was cleared to land RWY XX ZZZ. He landed without issue and taxied into the FBO and the vehicles followed him.

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.