Originally Posted by COTriple7

61.
(ii) A maximum of 50 hours of training in a flight simulator or flight training device may be credited toward the instrument flight time requirements of paragraph (a)(3) of this section if the training was accomplished in a course conducted by a training center certificated under part 142 of this chapter.
(iii) Training in a flight simulator or flight training device must be accomplished in a flight simulator or flight training device, representing an airplane.
(4) 250 hours of flight time in an airplane as a pilot in command, or as second in command performing the duties of pilot in command while under the supervision of a pilot in command, or any combination thereof, which includes at least—
(i) 100 hours of cross-country flight time; and
(ii) 25 hours of night flight time.

A person should be able to easily meet ATP mins as an FO for any 121/135 airline. Therefore, no 172 rental required.