Last active in May 1993, seen here at NASA storage. Aircraft participated in many test programs one of which was HIDEC and is marked as such here.

This 9th built F-15A arrived at NASA on 5 January 1976. It was a former 6512th Test Squadron aircraft at nearby Edwards AFB (CA) up to November 1975. It was used by the USAF for spinning, high angle-of-attack and fuel systems development trials. After delivery to Dryden it became part of the Highly Integrated Digital Electronic Control (HIDEC) flight research program. Up to July 2001 the Eagle was on loan from the USAF. In that month it was reregistered to N835NA/835. From February 2006 is was reported at stored. GThis status was at least up to late 2010.

Digital electronic engine control (DEEC) test aircraft. Testing centred on bringing the technology to the Pratt and Whitney F100 engine as fitted to F-15s and F-16s as a way to improve reliability.