B737-800
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented
Human Factors
Captain/PF called for flaps 30; I verified speed and didn't put flaps down. Both Captain/PF and I confirmed flaps 30 green light and landing checklist complete. Aural warning. Switched flap warning inhibit. Deemed stable; in VFR conditions and in a safe position to land and did so. I can only guess that I must have been distracted prior to putting the flaps in the final 30 position. Always verify flap position with indicator.
Basically CA called for flaps 30. FO missed the call or mis-selected flaps. Landed Flaps 25
B737-800 flight crew reported landing with flaps 25 when First Officer neglected to select flaps 30.