B777 Undifferentiated or Other Model
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 205; Flight Crew Total 15574; Flight Crew Type 4045
Fatigue
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Unstabilized Approach
Flight Crew Executed Go Around / Missed Approach
Human Factors; Procedure
Over 3 hours due to a plane change and galley transfer problems. The three of us had earlier expressed our fatigue. On approach to Runway 25R at Frankfurt; I was flying; and I delayed too long before landing gear extension. We received a warning and at 700 feet executed a missed approach. Subsequent approach and landing were normal and without issue. Some of the contributing factors were late departure on first scheduled leg; coupled with a long delay. Also; the final approach fix for ILS Z 25R at Frankfurt is located pretty far out. I was lulled into complacency because most approaches gear is extended near the FAF. This one is delayed and my timing was off due to fatigue.
Flight was delayed by 3.5 hrs due to catering issues. Subsequent approach in FRA became unstable at 1;000 feet; when the aircraft was not properly configured according to SOP; gear and flaps were not in the appropriate positions. Crew identified error and recovered by executing a missed approach. Following landing was stable and uneventful.Leading and contributing factor to becoming unstable was fatigue; entire flight was flown during backside of the body clock; therefore each personal performance and situational awareness were greatly degraded. All pilots were made aware of each other's fatigue. A long; silent and slow approach final lulled everybody into monotony. Therefore we all failed to extend gear and flaps according to SOP and became unstable.
B777 flight crew reported fatigue contributed to landing gear warning on final and unstable approach resulted in a go-around.