B737-700 flight crew reported that the aircraft pressurization system failed in-flight.

Attributes
ACN	1542580
Time
Date	201805
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Pressurization Control System
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 565 Flight Crew Type 3000
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 430 Flight Crew Type 13000
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Other / Unknown

Narrative:

Near top of descent our pressurization panel briefly went into the altitude mode then the auto fail light illuminated. We ran qrc and QRH for this event. Cabin altitude went to approximately 13;000 feet. All passenger O2 masks deployed. [ATC] was [advised]; fire trucks were waiting for us upon arrival. Emts were waiting for us in case of any injury; [gate agents] were called as well. Failures occur in every operation. Our training allowed us to work as a team to safely recover the aircraft.

Original NASA ASRS Text

Title: B737-700 flight crew reported that the aircraft pressurization system failed in-flight.

Narrative: Near Top of Descent our pressurization panel briefly went into the ALT mode then the Auto Fail light illuminated. We ran QRC and QRH for this event. Cabin ALT went to approximately 13;000 feet. All Passenger O2 masks deployed. [ATC] was [advised]; fire trucks were waiting for us upon arrival. EMTs were waiting for us in case of any injury; [Gate Agents] were called as well. Failures occur in every operation. Our training allowed us to work as a team to safely recover the aircraft.

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.