Lear 75 captain reported a loss of pressurization during climb that resulted in a return to the depa...

Attributes
ACN	1728715
Time
Date	201912
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Learjet 75
Operating Under FAR Part	Part 135
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 128 Flight Crew Total 8817 Flight Crew Type 415
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

A rapid decompression was experienced in between FL180 to FL200 approximately; the red cas message 'cabin altitude' was displayed and no previous alert or any other signal that would alert the crew of this situation was shown by the systems. Crew performed an [expedited descent] as indicated by memory items and then double check the procedures with the QRH. [Priority handling was requested] with center and the flight return safely to the departure airport ZZZ.no written report or any other information where required by ZZZ tower; the PIC called the tower via phone and talked with the supervisor on duty at that time. Nor any other authority requested further information to the flight crew regarding this incident.

Original NASA ASRS Text

Title: Lear 75 Captain reported a loss of pressurization during climb that resulted in a return to the departure airport.

Narrative: A rapid decompression was experienced in between FL180 to FL200 approximately; the RED CAS message 'CABIN ALTITUDE' was displayed and no previous alert or any other signal that would alert the crew of this situation was shown by the systems. Crew performed an [expedited descent] as indicated by memory items and then double check the procedures with the QRH. [Priority handling was requested] with Center and the flight return safely to the departure airport ZZZ.No written report or any other information where required by ZZZ Tower; the PIC called the Tower via phone and talked with the Supervisor on duty at that time. Nor any other authority requested further information to the flight crew regarding this incident.

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.

Lear 75 captain reported a loss of pressurization during climb that resulted in a return to the departure airport.