Flight Crew Air Transport Pilot (ATP)
Flight Crew Type 12596
Situational Awareness; Training / Qualification
Inflight Event / Encounter Unstabilized Approach; Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Executed Go Around / Missed Approach
Environment - Non Weather Related; Human Factors
We were following a B777 to RWY 8R in IAH. There was a 30 knot quartering tailwind during the approach and our spacing with the heavy started getting closer and closer. Crossing MATON; the airplane started to sink below the glide slope and the GPWS was activated. We followed the go-around procedure and came around for a non-eventful visual approach and landing.
B737 Captain reported sinking below the glideslope on approach to IAH in trail of a B777.