There seems to be bad news.
UA*G and NH*G may not be entitled to access a Lufthansa Lounge, when departing on Germanwings/Eurowings on a BASIC fare.
The rule is not quite clear. However, SEN/HON cardholders are banned from Lufthansa Lounges on a BASIC fare starting from March 26.
Eurowings: upgrade booking class BASIC->SMART?
http://www.austrianaviation.net/deta...-statuskunden/