Narrative:

While climbing out we lost pressurization and had to execute a descent. Maintenance is troubleshooting the problem. ATC was very helpful!

Google
 

Original NASA ASRS Text

Title: HS125 First Officer reports pressurization loss at FL188 during climb and ensuing descent.

Narrative: While climbing out we lost pressurization and had to execute a descent. Maintenance is troubleshooting the problem. ATC was very helpful!

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.