Reminds me of an experience some twenty years ago flying from Jan Smuts to FDMS on an early morning service which was advertised as a RSN flight, but turned out to be operated by a LAM aircraft.
When we approached Manzini on that early morning there was thick fog, and the flight deck crew decided to abort and divert to FQMA, their home base, rather than return to FAJS. Nobody on board obviously had a visa for Mozambique, and we were held in a tiny room pending better weather conditions at Manzini.
We finally departed Lourenço Marques in what was a similar B737 that we had arrived on. However, when taking off and following rotation, the rear 10 or so rows of seats began to slide back, moving the COG accordingly and drastically changing the pitch. Lots of screeming ensued. It's a credit to the cockpit crew that they managed to get the situation under control and return to FQMA. As it turned out, the aircraft had been used for freight duty with the seats removed, but somehow the process of tightening of the bolts securing the seats had been interrupted at some point and not completed prior to departure.
