A320
Flight Crew Last 90 Days 200; Flight Crew Total 19000; Flight Crew Type 7000
Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Took Evasive Action
Procedure
We [were] flying the LDA PRM 28R in SFO. We were put 2.5 miles behind a 747-400 who was on the ILS 28L. The winds below 4;000 FT were 180 at 15 KTS and surface winds were 250 at 10 KTS. I asked to slow due to the 747's close proximity on the approach given the southerly winds that would blow the 747's wake into our path. The Controller seemed upset that we were concerned about the possible wake encounter and said that we could go missed if we had a problem. We broke out at 1;700 FT and stayed high and flew over the wake that we could clearly see due to the moisture in the air! My issue is with the Controller not having any situational awareness in regards to the 747 and the winds aloft considering the close proximity of the aircraft and these dangerous approaches. Smaller aircraft should be still given 5 miles behind a heavy on this approach considering how close the 2 runways are (750 FT)! This is an accident waiting to happen!
A320 pilot reported he was upset with SFO Controller's technique in not providing enough margin to a preceding B747 wake turbulence.