Visible crew/equipment: After Rockford has received his passport he's told to present it to Agent Kleinhoff, and when Rockford is driven to the tarmac beside the aircraft, in the closeup the reflection of the moving boom pole/mic is visible on the car's rear window. (00:04:10)
Continuity mistake: When Rockford is with Agent Kleinhoff on the tarmac, the airplane Rockford boards has N-number N664CL, but the airplane that takes off has many more windows and a Canadian flag (it's not the 70's Air Canada logo) on its tail; then the plane in midair has N-number N953GA. Mid flight there are more discrepancies in the airplane's configuration. Finally, the airplane that lands has the original tail number N664CL. (00:06:35)
Continuity mistake: When Rockford first sees Christine during her photo session, in the wide shot Christine is brought a glass of wine which she holds in her right hand while the white flower is in her left hand; then the wine glass and flower switch hands in the next closeup. This change continues to occur in following shots. (00:18:50)