From The Internet Movie Plane Database
international title : The Last Adventure
Alain Delon (Manu)
Lino Ventura (Roland)
Joanna Shimkus (Laetitia)
Serge Reggiani (the pilot)
Two adventurers and best friends, Roland and Manu, are the victims of a practical joke that costs Manu his pilot's license... They must leave France and try to rise a treasure from a submerged plane.
Stampe SV4 c/n 261, registered F-BCGP which will be destroyed on 19th october 1971.
JODEL DR 1050 c/n 191
Aircraft wearing the maldavian registration 8Q-RHB when seen in a flash-back sequence.
The ditched plane was on Congo's shore according the story (but in fact, the scene was play in the South of France, near Marseille (La Ciotat)).
Piper J-3 Cub & Gardan GY–80 Horizon
Claude Piel CP 1310 Super Emeraude
Scintex ML 250 Rubis
Registration F-BJMF, c/n 102.
Scintex CP 605 Super Diamant