With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Concorde had livery restrictions; the majority of the surface had to be covered with a highly reflective white paint to avoid overheating the aluminium structure due to heating effects from supersonic flight at Mach 2. The white finish reduced the skin temperature by. In 1996, Air France briefly painted F-BTSD in a predominantly blue livery and wings with the exception of a promotional deal with Pepsi. In this paint scheme, Air France was advised to remain at for no more than 20 minutes at a time, but there was no restriction at speeds under Mach 1.7. F-BTSD was used because it was not scheduled for any long flights that required extended Mach 2 operations.
text_B: Did Air France F-BTSD have blue wings during their Pepsi promotional campaign?
DON'T KNOW.