At FL250 and climbing; a md-83 pressure flow light illuminated with the cabin climbing 1;000 FPM at ...

Narrative:

Departing VMC all checks were normal; but climbing through 25;000 feet the pressure flow light illuminated. The captain stated the cabin was at 8;000 feet and climbing 1;000 FPM and directed me to initiate an emergency descent to 10;000 feet. The captain declared an emergency with ATC and coordinated a vector to return to the departure airport. The captain read the QRH procedure and we accomplished the procedure. We were able to prevent the cabin altitude from climbing to 10;000 feet and the oxygen masks did not automatically deploy. The captain informed the flight attendants what was happening; gave them their test briefing; and informed the passengers we were returning. We landed overweight with a normal touchdown. After landing; we coordinated with airfield rescue and fire fighters; ATC; operations; and ramp tower to return to a gate. The brake temps remained within normal range. After arrival; we debriefed with maintenance. The captain filled out the maintenance log for the pressurization problem and overweight landing; and then coordinated with dispatch and crew tracking.

Original NASA ASRS Text

Title: At FL250 and climbing; a MD-83 pressure flow light illuminated with the cabin climbing 1;000 FPM at 8;000 feet; so an emergency was declared; a descent started; and the QRH completed followed by an uneventful landing at the departure airport.

Narrative: Departing VMC all checks were normal; but climbing through 25;000 feet the pressure flow light illuminated. The Captain stated the cabin was at 8;000 feet and climbing 1;000 FPM and directed me to initiate an emergency descent to 10;000 feet. The Captain declared an emergency with ATC and coordinated a vector to return to the departure airport. The Captain read the QRH procedure and we accomplished the procedure. We were able to prevent the cabin altitude from climbing to 10;000 feet and the oxygen masks did not automatically deploy. The Captain informed the flight attendants what was happening; gave them their TEST briefing; and informed the passengers we were returning. We landed overweight with a normal touchdown. After landing; we coordinated with Airfield Rescue and Fire Fighters; ATC; Operations; and Ramp Tower to return to a Gate. The brake temps remained within normal range. After arrival; we debriefed with Maintenance. The Captain filled out the Maintenance Log for the pressurization problem and overweight landing; and then coordinated with Dispatch and crew tracking.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1116416
Time
Date	201309
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	MD-83
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 15600
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

At FL250 and climbing; a md-83 pressure flow light illuminated with the cabin climbing 1;000 FPM at 8;000 feet; so an emergency was declared; a descent started; and the QRH completed followed by an uneventful landing at the departure airport.