Lr-40XR captain reported loss of cabin pressure at FL395.

Attributes
ACN	1322674
Time
Date	201601
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Learjet 40
Operating Under FAR Part	Part 135
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 110 Flight Crew Type 240
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Passing FL395 the aircraft lost cabin pressure; the emergency pressurization system activated and the crew reported this to the controlling agency whilst following the checklist and standard operating procedures published by the aircraft manufacturer. No other abnormalities occurred.

Original NASA ASRS Text

Title: LR-40XR Captain reported loss of cabin pressure at FL395.

Narrative: Passing FL395 the aircraft lost cabin pressure; the emergency pressurization system activated and the crew reported this to the controlling agency whilst following the checklist and standard operating procedures published by the aircraft manufacturer. No other abnormalities occurred.

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.