However, on May 8, 1980, he was suspended after failing a Boeing 737 company line check and was found to be unsatisfactory in the following areas: adherence to regulations, checklist usage, flight procedures such as departures and cruise control and approaches and landings.
Porén, o 8 de maio de 1980, foi suspendido tras suspender un control en liña da compañía do Boeing 737, atopándose que non aprobaba nas seguintes áreas: cumprimento das regulacións, uso da lista de verificación, procedementos de voo como control de saídas e cruceiro, e aproximacións e aterraxes.