C340 pilot reported copilot windshield blew out resulted in safe landing.

Attributes
ACN	1760255
Time
Date	202009
Local Time Of Day	0601-1200
Place
Locale Reference	ZFW.ARTCC
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Cessna 340/340A
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	Cockpit Window
Person 1
Function	Captain Single Pilot Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 3500 Flight Crew Type 675
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Clearance

Narrative:

While climbing through FL180 and shortly after verifying normal cabin altitude and pressure differential; the copilot windshield blew out. I declared an emergency and initiated an emergency descent. I safely flew the airplane back to the departure airport. I committed no negligent activity; and if I did; it was completely unintentional.

Original NASA ASRS Text

Title: C340 Pilot reported copilot windshield blew out resulted in safe landing.

Narrative: While climbing through FL180 and shortly after verifying normal cabin altitude and pressure differential; the copilot windshield blew out. I declared an emergency and initiated an emergency descent. I safely flew the airplane back to the departure airport. I committed no negligent activity; and if I did; it was completely unintentional.

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.