During climb out at 14;000 ft; an md-80 pressurization transfer lockout/standby on light illuminated...

Narrative:

Climbing out above 10;000 ft; pressurization transfer lockout and standby on lights illuminated. First officer was flying and I went to the QRH. The procedure called for the switch to stby then primary. Stby on light extinguished. Before procedure could be completed (as the aircraft was cleared to 16;000 feet) the cabin altitude warning sounded; the cabin altitude and passenger O2 on light illuminated. Immediately descended; emergency declared with ATC and clearance was received to 9;000 and then 5;000 ft. Flight attendants called the cockpit to notify of mask deployment. Aircraft diverted. Airfield rescue and fire fighters inspected aircraft after landing and we proceeded to gate.

Original NASA ASRS Text

Title: During climb out at 14;000 FT; an MD-80 Pressurization TRANSFER LOCKOUT/STANDBY ON light illuminated followed shortly by the cabin altitude horn and the passenger O2 light. An emergency was declared and the flight diverted to a nearby airport.

Narrative: Climbing out above 10;000 FT; pressurization Transfer Lockout and Standby ON lights illuminated. First Officer was flying and I went to the QRH. The procedure called for the switch to STBY then Primary. STBY ON light extinguished. Before procedure could be completed (as the aircraft was cleared to 16;000 feet) the CABIN ALT warning sounded; the cabin altitude and Passenger O2 ON light illuminated. Immediately descended; emergency declared with ATC and clearance was received to 9;000 and then 5;000 FT. Flight attendants called the cockpit to notify of mask deployment. Aircraft diverted. Airfield Rescue and Fire Fighters inspected aircraft after landing and we proceeded to gate.

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	1117471
Time
Date	201309
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	MD-82
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Pressurization Control System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

During climb out at 14;000 ft; an md-80 pressurization transfer lockout/standby on light illuminated followed shortly by the cabin altitude horn and the passenger O2 light. An emergency was declared and the flight diverted to a nearby airport.