Narrative:

I was working the radar at multiple sectors due to low traffic and low complexity. There was no d-side for the same reasons. Below our sectors are approach control's with a shelf splitting the two. A B737 was en route at FL350. The B737 was pvd'd onto my screen from sector 38. Sector 38 called and reported that the B737 had a rapid pressure loss and was descending at an accelerated rate. I accepted radar contact with the B737 descending rapidly. I called to coordinate a point out to approach and future handoff; with the code and that the aircraft was an emergency and would be entering their airspace descending rapidly. I asked the B737 to report altitude; 120 was reported. I then called and asked approach for lower to 080. An altitude was never available from host on the aircraft. The aircraft may have entered approach's airspace during coordination; however I could not tell as no altitude was shown in the data block due to the rapid descent. I observed no aircraft in TRACON's airspace during the event. The plane leveled and reported at 080 and approach accepted a handoff. I attempted to find the pilot's intentions but was asked to stand by. I transferred communications and the plane landed.

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Original NASA ASRS Text

Title: Enroute Controller described an emergency event that resulted in an uncoordinated airspace entry event due to an emergency descent due to pressurization problems.

Narrative: I was working the RADAR at Multiple Sectors due to low traffic and low complexity. There was no D-Side for the same reasons. Below our sectors are Approach Control's with a shelf splitting the two. A B737 was en route at FL350. The B737 was PVD'd onto my screen from Sector 38. Sector 38 called and reported that the B737 had a rapid pressure loss and was descending at an accelerated rate. I accepted RADAR contact with the B737 descending rapidly. I called to coordinate a point out to Approach and future handoff; with the code and that the aircraft was an emergency and would be entering their airspace descending rapidly. I asked the B737 to report altitude; 120 was reported. I then called and asked approach for lower to 080. An altitude was never available from HOST on the aircraft. The aircraft may have entered Approach's airspace during coordination; however I could not tell as no altitude was shown in the data block due to the rapid descent. I observed no aircraft in TRACON's airspace during the event. The plane leveled and reported at 080 and Approach accepted a handoff. I attempted to find the pilot's intentions but was asked to stand by. I transferred communications and the plane landed.

Data retrieved from NASA's ASRS site as of July 2013 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.