The crash took place against the background of a pilots' strike that had caused bad feelings between crew members. The strike had also disrupted services, causing Flight 548 to be loaded with the maximum weight allowable. Recommendations from the inquiry led to the mandatory installation of cockpit voice recorders in British-registered airliners. Another recommendation was for greater caution before allowing off-duty crew members to occupy flight deck seats. Some observers felt that the inquiry was unduly biased in favour of the aircraft's manufacturers.