Probably relevant to youse F-35B SRVLs requirement?
STRIKE TEST NEWS Air Test and Evaluation Squadron 23 Newsletter
2012 Issue
http://www.navair.navy.mil/nawcad/in...ownload&id=670 (PDF 2.1Mb)
"...
F-35B (STOVL) FLIGHT SCIENCES AIRCRAFT
For each variant, Flight Sciences aircraft specifically go after flight test data requirements that would not be available in a production configuration. Each aircraft has a unique set of instrumentation that has been incorporated throughout the airframe, making them truly one-of-a kind. They were the first to roll off the production line in Fort Worth, and each one is critical to the completion of the flight test program. The Flight Science jets do not have full sensor suites installed and do not run the block software that provides warfighting capabilities for the jet. Recent lines of testing are defined below for each aircraft. The BF-1 team completed loads testing of the new Auxiliary Air Inlet (AAI) door configuration in January 2012 with positive results.
BF-1 has continued loads testing with unflared slow landings in STOVL mode...."