An erj-190 flight crew conducted an emergency descent and diverted to a nearby airport when they suf...

Attributes
ACN	962990
Time
Date	201108
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	EMB ERJ 190/195 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

We were in cruise at FL330 with the number two engine bleed deferred when we heard a sudden 'cork popping' sound followed by an increasing rushing air sound. No new EICAS messages appeared but we noticed the cabin altitude climbing at 700 FPM and increasing. We donned oxygen masks and initiated an emergency descent. The cabin climb rate peaked at 2;000 FPM+. We leveled at 10;000 MSL. The max cabin altitude reached was approximately 8;300. We then diverted to a nearby airport for a precautionary landing.after landing a contract mechanic noted a mechanical failure in ducting near pack two.

Original NASA ASRS Text

Title: An ERJ-190 flight crew conducted an emergency descent and diverted to a nearby airport when they suffered a rupture of the pneumatic ducting to the pressurization system.

Narrative: We were in cruise at FL330 with the number two engine bleed deferred when we heard a sudden 'cork popping' sound followed by an increasing rushing air sound. No new EICAS messages appeared but we noticed the cabin altitude climbing at 700 FPM and increasing. We donned oxygen masks and initiated an emergency descent. The cabin climb rate peaked at 2;000 FPM+. We leveled at 10;000 MSL. The max cabin altitude reached was approximately 8;300. We then diverted to a nearby airport for a precautionary landing.After landing a contract mechanic noted a mechanical failure in ducting near pack two.

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.

An erj-190 flight crew conducted an emergency descent and diverted to a nearby airport when they suffered a rupture of the pneumatic ducting to the pressurization system.