B737 Undifferentiated or Other Model
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 545
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented
Human Factors
Upon shutdown; the A FA (Flight Attendant) was unable to open the forward entry door due to the aircraft still being pressurized. At that time the Captain and I realized the pressure controller elevation for landing was still set at the departure airport elevation from the previous leg. We then manually opened the outflow valve. There was no noticeable pressure change (that we felt physically) and the A FA was able to open the entry door without any other issues.Things were going smoothly and the Captain and I went through the checklist quickly. I feel like I am usually very good at crosschecking all of the switches/settings while reading the checklist; however; this time speed and complacency got the best of me. I was pretty frustrated with myself for missing this and will work hard to not make the same mistake again. When completing the Before Start Checklist; and checking the pressurization; maybe the response could include the altitudes that are set in each window (cruise and landing) to help draw attention to it. In this case I feel we saw the correct landing altitude in the window for the airport we were departing from; and at quick glance thought it made sense. Drawing more attention to those settings (like reading altimeter settings or V-Speeds) would ensure they don't get overlooked. If not made into procedure; this would be something I would personally do for myself to ensure I don't miss this again.
B737 First Officer reported a Flight Attendant reporting that the aircraft was still pressurized at gate arrival because the pressurization control panel was not set properly during departure preflight.