Interesting DoT&E report ;
http://www.dote.osd.mil/pub/reports/...2014f35jsf.pdf
summary;
Not Ready for Prime Time
DOT&E Report: The F-35 Is Not Ready for IOC and Won't Be Any Time Soon
Cooking the Numbers
Testing Being Deferred, Not Completed
Significant Safety Risks Are Still Unresolved
Wing Drop Concerns
Engine Problems Continue to Hold the F-35 Program Back
Dangerous Helmet Failures
Initial Combat Capabilities for the Marien Corps Variant Will Be Even More Limited Than Planned
ALIS Software Failures
Software Snarls Jeopardize Combat Suitability
Hiding Today's Failings While Building a Huge Future Cost "Bow Wave"
A Maintenance Nightmare
Conclusion: Exquisitely Limited Capability