B757 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 120; Flight Crew Total 17800; Flight Crew Type 7050
No Specific Anomaly Occurred All Types
General None Reported / Taken
Chart Or Publication
While on arrival into SFO on the new SERFR 1 Arrival; I realized in the briefing that on the last portion of the arrival (EDDYY; SWELS; and MENLO); you are on the edge of the bottom of the Class B airspace. If the arrival is modified at all by ATC; it is possible to go below the altitudes if given a lower altitude. 230 knots seems fast at MENLO at 4;000 feet when 200 knots is required below 4;000. Why not make 200 knots the speed at the 3 last RNAV fixes. It would prepare the transition smoother to either an ILS or Tiptoe visual approach.
B757 Captain noted that the final portion of the SERFR1 Arrival at SFO has aircraft flying very close to the bottom of the Class B airspace and the 230 knot restriction at MENLO at 4;000 feet conflicts with the requirement to be at 200 knots below 4;000.