Medium Transport
Flight Crew Air Transport Pilot (ATP)
Communication Breakdown
ATC Issue All Types; Deviation - Speed All Types; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Airspace Structure; Human Factors; Procedure
While being radar vectored for ILS 6 at Teterboro at assigned altitude 3;000 feet operating at the base of Class B airspace. Assigned speed 250 kts. Approximately 10 NM SSW of VINGS Intersection. Approach assigned altitude 2;000. I responded we were slowing to 200 kts for the Class B; the Controller instructed to maintain 250 kts. I stated we would be in excess of maximum speed. The Controller stated my authority supersedes that restriction and to maintain 250 or the Controller would take us out of sequence and vector us for a new sequence. My First Officer stated the Controller did not have authority to do that. I assessed the safety of the speed assigned and based on the proximity to the field no intervening traffic in front; behind or in proximity; I decided that without Class B being present the speed would be appropriate. As the Controller has authority over Class B. I elected to comply with the instruction and directed my First Officer to maintain speed and continue. The Controller asked again what speed we were maintaining and I responded 250 kts.
Corporate Jet Captain reported being instructed by ATC to maintain 250 kts below NYC Class B airspace while on the ILS Runway 6 approach to TEB.