NY -- Standard&Poor's CreditWire 11/20/95 -- The impact on McDonnell Douglas Corp.'s credit quality (currently triple-`B' senior debt on CreditWatch with positive implications, based on other factors) would clearly be positive if the reported, although unconfirmed, merger negotiations between Boeing Co. and McDonnell Douglas Corp. are successful. The effect on Boeing's double-`A' senior rating would depend on the financing method. If the talks are successful, the merger would create by far the world's largest aerospace firm, with revenues of about $35 billion. Such an entity would hold leading positions in commercial and military aircraft, and have a major presence in helicopters and space vehicles businesses. Thus, the combined companies' business risk profile would be enhanced. The most favorable
