Flight Crew Air Transport Pilot (ATP)
Distraction; Situational Awareness; Workload; Confusion
Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Other / Unknown; Inflight Event / Encounter Unstabilized Approach
General None Reported / Taken
Company Policy; Human Factors; Procedure
On approach to the Localizer 26R First Officer (FO) hand flying; intercepted final on a dog leg slightly high with flaps 15 selected. Captain recommended getting the gear down. FO called gear down; flaps 20.  FO called for flaps 25 set speed. Captain was calling tower. The 1;000 foot call by FO; stable. 1;000 feet per minute rate of decent. On landing; FO had to brake hard to bring aircraft to a stop. After turning off runway; FO began cleanup and as flaps were selected up; FO noticed that the before landing checklist had not been completed and the flap handle was at 20. The landing was done with flaps 20. The Captain; FO or relief pilot did not notice that the checklist was not completed or the final flaps 25 had not been selected.Possibly adding to the 1;000ft 'stable' required call; that the checklist is complete.
First Officer (FO) hand flown visual approach to 26R was controlled and normal till the last segment; although we were generally high and fast; which is also normal for a this airport's approach set up. We should not have delayed gear extension and were rushed to make a stable window at 1;000 ft. The captain was focused on being stable at that point and completely missed a more important verification of landing configuration. The captain called unstable with corrections in process and at 500ft noticed a short deviation sink rate below 1;000 ft. Either pilot should have called for a go around; but we continued to a controlled; safe landing in clear conditions instead. After landing; the FO noticed the flap handle in the 20 degree slot instead of the briefed 25 slot.Although it is very difficult to do; I should be more geared towards calling go around even though I trust experienced FO's with more time in aircraft than myself. I know better than to get target 'fixated'. This experience for me is not likely to happen again.
All three B777 pilots failed to notice Flap 20 set for landing even though the First Officer; flying pilot; call Flaps 25. The Captain missed the earlier Flaps 25 call but a 1;000 feet stabilized approach call is no longer required.