 The Zucker/Abrahams directing trio (Jerry Zucker (qv),  David Zucker (I) (qv) & Jim Abrahams (qv)) claim (on the audio  commentary on the DVD release of _Airplane! (1980)_ (qv)) never to  have seen this film. They initially agreed to a sequel and then  balked at the idea at a later date. The movie went ahead without  their permission and despite their protests 