 Complete the following phrase:  A disappointing mid-season period followed with a string of non-qualifications for the second FW as the 01 chassis had to be used again due to accidents. Van Lennep returned for the Dutch Grand Prix but failed to qualify and Merzario retired with a broken gearbox, having qualified down in 21st. For the French Grand Prix, Jean-Pierre Jabouille was brought in to replace the Dutchman but he also failed to qualify the last appearance for chassis 01, while Merzario started 15th and finished ninth. Belsø returned again for the 