I have had this happen once, but am unable to reproduce.

In the helicopter showcase, strafing around the mortar isle at very close range. Helicopter damaged from fire and crashing on cliffs/in the water. Game crashes instantly (before any death animation).

I had a crash exactly as you described by the mortar isle. According to the Windows error log it crashed in PhysX3_x86.dll. So either the game has used undefined behaviour in PhysX or PhysX has a bug.

Here is the log:

Problem signature:

  Problem Event Name:	APPCRASH
  Application Name:	arma3.exe
  Application Version:	0.5.102.571
  Application Timestamp:	512deb6a
  Fault Module Name:	PhysX3_x86.dll
  Fault Module Version:	3.2.3.1
  Fault Module Timestamp:	50f68ef3
  Exception Code:	c0000005
  Exception Offset:	000d6dd7
  OS Version:	6.1.7601.2.1.0.256.48
  Locale ID:	2057
  Additional Information 1:	0a9e
  Additional Information 2:	0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:	0a9e
  Additional Information 4:	0a9e372d3b4ad19135b953a78882e789

Also if you cannot reproduce it "always" as stated, the report should be changed.

I got my frist crash with same error message as dylan note. I stood next to the rock on the hill.

Mission: UC_v003_A3_West_Stratis.Stratis
rpt, mdmp, bidmp in the PhysX3_x86.dll crash - 01.zip attachment.

Windows 7 32bit

sunzz :
Please fill up the report and provide files according to HOW TO GUIDE in the top right corner

danczer : thanks, I'll check your mission. Can you please provide some repro steps so i will be able to reproduce the crash?

Closing due to lack of info/response.

If the issue still persists, please create a new report with all required information as detailed in the "How to guide" (http://feedback.arma3.com/how-to-user.html.html). :)