Does Air AMS require the carrier to transmit the master air waybill record before another party may transmit house air waybill records associated to that master air waybill?

Does Air AMS require the carrier to transmit the master air waybill record before another party may transmit house air waybill records associated to that master air waybill?

No.  Air AMS will now accept house air waybill information from an eligible Air AMS participant prior to the receipt of the master air waybill from the inbound air carrier.