B737-700
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Human-Machine Interface
Aircraft Equipment Problem Less Severe; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Flight Crew Overcame Equipment Problem
Human Factors
Aural alert. The weather was VFR and we had the airport in sight. We had both set 29.90 from listening to the ATIS; and 29.90 was copied down on the ATIS card. When we asked Tower for a current setting after the alert; we were given 29.51. We adjusted the altimeters and the aircraft path and landed normally.We both believe we heard 29.90 from the ATIS; but it seems possible that we could have misheard a verbal 29.50. By the time we rechecked the ATIS; it was broadcasting 29.51 with the latest report. The pilot monitoring had the VSD (Vertical Situation Display) displayed; but said the error was not obvious; maybe due to the hard right turn ahead. Once the proper altimeter setting was set; it showed us low on the path. Thankfully; we were still above the MEA for the segment. This is a good reminder that vigilance is required when setting the altimeter using a verbal source of information.
While conducting RNAV RNP Runway XX Approach at ZZZ we got [an] altimeter setting" aural alert just about crossing ZZZZZ. We were in visual conditions and I queried Tower what [the] altimeter setting was. We had 29.90 set and Tower told us it was 29.51. While copying ATIS information prior to top of descent; I heard and wrote down on the card 29.90. I had the VSD (Vertical Situation Display) up on my side and I did not notice any deviations from the path. We visually had the airport in sight; updated our altimeter settings; and landed uneventfully."
B737-700 flight crew reported receiving an altimeter setting aural alert during initial approach and proceeded to update to the correct altimeter setting after verifying with Tower and landed safely.