This Breguet 941 was tested as the McDonnell Douglas 188 STOL airliner by Eastern Air Lines in 1968 and by American in the spring of 1969. Oddly it never carried a US registration and operated under its type-based French military serial number 2. It is interesting to note that this was a McDonnell and not a Douglas project, even though McDonnell felt more at home building fighters. Taken at the McDonnell factory at Lambert Field, this is assumed to be a McDonnell Douglas photo.

This aircraft was flown as a "McDonnell Douglas 188" STOL demonstrator in the northeast corridor in the US during 1968. It was not registered in the USA, but was operated by the French Air Force on behalf of McDonnell Douglas in full Eastern Air Lines livery, under its military serial 2 (callsign F-ZJRL, formerly coded "L"). The following year it was painted in American Airlines livery and flown on other routes. The aircraft returned to France in June 1969 and was then operated by the French AF coded 62-NB until withdrawn from use in 1974. McDonnell Douglas had obtained a license to build this aircraft in the US as the MD-188, but since the airlines showed little interest the project was dropped and no MD-188s were built.