A300 flight crew; dispatched with number 1 pack deferred; reported diverting to a nearby alternate w...

Attributes
ACN	1438103
Time
Date	201704
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Pneumatic System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Inflight Event / Encounter Weather / Turbulence

Narrative:

Flying at FL310; deviating around thunderstorm activity. Bleed valve 2 fault message on ECAM. Unable to clear; subsequent pack 2 fault. Pack 1 bleed valve 1 was [currently] deferred. First officer leg; remained PF. Ran appropriate ECAM checklist. Unable to restore pack 2 and aircraft unable to maintain pressurization. Donned O2 masks and requested descent to 10;000 or lowest MEA. Center reported moderate to severe turbulence in area. Requested vectors to a ZZZ1 airport (80 NM from our position). Sent divert message via ACARS to dispatcher and informed company. Vectored to visual and flew the RNAV [approach]. Rest of flight uneventful.

Original NASA ASRS Text

Title: A300 flight crew; dispatched with Number 1 pack deferred; reported diverting to a nearby alternate when they were unable to control cabin pressure after losing pack Number 2.

Narrative: Flying at FL310; deviating around thunderstorm activity. Bleed Valve 2 Fault message on ECAM. Unable to clear; subsequent Pack 2 Fault. Pack 1 Bleed Valve 1 was [currently] deferred. FO leg; remained PF. Ran appropriate ECAM checklist. Unable to restore Pack 2 and aircraft unable to maintain pressurization. Donned O2 masks and requested descent to 10;000 or lowest MEA. Center reported moderate to severe turbulence in area. Requested vectors to a ZZZ1 airport (80 NM from our position). Sent divert message via ACARS to Dispatcher and informed company. Vectored to visual and flew the RNAV [approach]. Rest of flight uneventful.

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.

A300 flight crew; dispatched with number 1 pack deferred; reported diverting to a nearby alternate when they were unable to control cabin pressure after losing pack number 2.