Learjet 60 pilot reported a loud bang followed by a priority landing.

Attributes
ACN	1679435
Time
Date	201908
Local Time Of Day	1801-2400
Place
Locale Reference	HPN.Airport
State Reference	NY
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Learjet 60
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 65 Flight Crew Total 10455 Flight Crew Type 178
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy

Narrative:

Run-up/taxi checks were normal. Departed with panel clear - normal. At 6300 ft. With heard a loud bang in the back of the cabin. I immediately leveled off and pulled the power back to 200 kts. We noticed the emergency press (red master caution) light was illuminated. We descended to 6000 ft. And told ATC we were [requesting priority handling] and diverting to hpn. ATC provided new routing. My second in command ran the emergency pressurization checklist. Isolated the emergency as per the emergency press checklist. From this point the flight was conducted normally (panel clear) with a successful landing at hpn ILS runway 16 to a full stop.

Original NASA ASRS Text

Title: Learjet 60 pilot reported a loud bang followed by a priority landing.

Narrative: Run-up/taxi checks were normal. Departed with panel clear - normal. At 6300 ft. with heard a loud bang in the back of the cabin. I immediately leveled off and pulled the power back to 200 kts. We noticed the Emergency Press (red master caution) light was illuminated. We descended to 6000 ft. and told ATC we were [requesting priority handling] and diverting to HPN. ATC provided new routing. My Second in Command ran the Emergency Pressurization checklist. Isolated the emergency as per the Emergency Press checklist. From this point the flight was conducted normally (panel clear) with a successful landing at HPN ILS Runway 16 to a full stop.

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.