Message posted by Peter Merlin on April 12, 2005 at 9:03:43 PST:

The fourth production F/A-22A (91-4004) has been used for low observables testing at the Groom Lake facility. It may never have landed at the airfield, but it certainly flew through the radar range at Groom to verify its radar cross-section.

In Reply to: TESTING AIRCRAFT posted by D.K.STRICKLER on April 11, 2005 at 19:10:54 PST:

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