B737-800
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Fatigue
Inflight Event / Encounter Unstabilized Approach
General None Reported / Taken
Human Factors
Both pilots on duty for six days in a row. I had been on duty for 8 of the preceding 10 days. I had been on duty for 28 hours over the preceding three days; and worked 9 out of the preceding 11 days. My FO (First Officer) was currently scheduled for 9 days in a row of flying due to a reassignment; awaiting a change from crew schedule. During arrival into ZZZ; we were given an arrival change about 20 minutes out. I thought I had a good plan for our descent; but found that we were kept a little high on the arrival; and ended up high when cleared for the visual. I did not notice right away that we were high; and once I became aware; lowered the gear and configured rapidly for descent. I always try to be configured early and was not on this approach. I did use speed brakes and flaps 15/gear down for an extended time until on the glide slope. I was configured by 1000 ft. AGL; but was not coming in with the power until 500 ft. I believe I met the requirements for a stable approach in VMC; so we continued to an uneventful landing.I honestly felt worn out. I did sign fit for duty for this leg; and completed the trip but simply felt worn out. Our domestic narrow body lines are frequently putting us on duty over 300 hours a month; very long duty days; maintenance delays; hotel problems and whether events. After months of this; it takes its toll on our attention span and attention to detail skills. I have been a junior line holder or reserve Captain for seven years and am finding that I can not do what I used to do. After working hard to attain this position for 30 years; the industry has changed enough so that this domestic flying is harder work than my regional flying experience and is putting the operation at an unacceptable risk level to me. I am solving the problem by abandoning my seat for the 777 FO.It does not appear that there is any motivation in our industry to remedy the problems associated with FAR 117; so I do not see any improvement on our horizon.
B737-800 Captain reported company safety margin has been diminished due to scheduling policy and outdated FAR 117.