North American Aviation X-15A-2 with ablative coating and external tanks Published on August 20, 2012 in 21 August 1967Full resolution (1280 × 1242) ← Previous North American Aviation X-15A-2 56-6671 with full ablative coating and external fuel tanks. (NASA)X-15A-2 with full scale ablative and external tanks installed parked in front of hanger. 4 Aug. 67