John and Roy are dispatched to a call at 0820 hours involving an injured woman. While certainly a reasonable time passes, however, after they return to the station and Roy is summoned into Capt. Stanley's office, it is all of the sudden after 2 PM (based on clock on wall) There is no way nearly 6 hours passed in that time from the call to their return from the hospital.
When squad 51 is sent out to the first alarm call, there was supposed to be a rain storm. As they arrive, the skies are clear and bright. As the enter the garage, there is an instant downpour. Next scene shows station 51 having the flag raise, clear blue skies again.
When Gage and Desoto are at the first alarm call, Gage had longer hair. When they return back to the station, he clearly has a fresh haircut. For the remainder of the show, his hair is shown longer again.
The uniform for "officer" Vince is completely wrong for a Los Angeles County Deputy Sheriff circa 1977. The dark blue he wore is used by the LAPD while deputies used a tan shirt with green pants.