Francisco,
The regulation for the required hours for the airline transport pilot certificate (ATP) can be found under 14 CFR 61.159. Below I’ve screenshotted (a) and (b) of the regulation as there is a bit more info underneath for other avenues such as second-in-command and flight engineer, etc.
The hours after completing ATP’s ACPP can vary depending on retraining or failed checkride(s), but a rough outline if my memory serves me well would be around:
Cross-Country: 70’s
Night: 10 (not counting the night landings under PIC)
PIC: 220’s
Instrument: 30-40
Multi-Engine: 25
I did a breakdown on another thread; I will see if I can find that.
Okay, I found the breakdown I did previously, but it was for the Credit Private 100-HR Multi-Engine program: Multi-Engine Add On Opinions - #10 by Brady. I am sure we can get a rough outline breakdown though “Zero-to-Hero” regular program.
Brady