Narrative:

The cabin pressure auto control system regulator #1 failed and caused the aircraft to pressurize on the deck. A ramp worker opened the main cabin door and was struck in the face by the door violently opening.the #1 cabin pressure auto control system regulator failed closed.

Google
 

Original NASA ASRS Text

Title: A ramp member was injured when opening a cabin door of an A310 while the cabin was pressurized due to a regulator failure.

Narrative: The cabin pressure auto control system regulator #1 failed and caused the aircraft to pressurize on the deck. A ramp worker opened the main cabin door and was struck in the face by the door violently opening.The #1 cabin pressure auto control system regulator failed closed.

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.