Narrative:

During landing rollout as I stowed the thrust reverser's; I heard an unusual amount of engine noise. One of the nurses called to the pilot not flying to point out that the emergency exit had fallen open. I shut down the right engine and continued to taxi back to parking as there were no other indications of anything affecting safety of passengers or aircraft. During the incident debrief; the nurses indicated that the exit had actually opened while we were airborne and that there was a significant pressure change at that time. I didn't hear or feel anything unusual during the flight or on approach. My first indication that there was a problem was during the landing rollout. Since the occurrence of a similar incident many years ago; it has been my habit to check the security of the emergency exit during my preflight walk around. The only other thing I might add as a result of this is to check the condition of the safety wire that is normally in place to hold the emergency exit window handle in the closed position.

Google
 

Original NASA ASRS Text

Title: LR35 Captain hears an unusual amount of engine noise after stowing the reverser's during rollout and is informed by a nurse that the emergency exit has fallen open. The right engine is shut down and the aircraft continues to parking.

Narrative: During landing rollout as I stowed the thrust reverser's; I heard an unusual amount of engine noise. One of the nurses called to the pilot not flying to point out that the emergency exit had fallen open. I shut down the right engine and continued to taxi back to parking as there were no other indications of anything affecting safety of passengers or aircraft. During the incident debrief; the nurses indicated that the exit had actually opened while we were airborne and that there was a significant pressure change at that time. I didn't hear or feel anything unusual during the flight or on approach. My first indication that there was a problem was during the landing rollout. Since the occurrence of a similar incident many years ago; it has been my habit to check the security of the emergency exit during my preflight walk around. The only other thing I might add as a result of this is to check the condition of the safety wire that is normally in place to hold the emergency exit window handle in the closed position.

Data retrieved from NASA's ASRS site as of April 2012 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.