Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 150; Flight Crew Type 9000
Communication Breakdown; Confusion; Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented
Chart Or Publication; Procedure
Brand new RNAV SID has very confusing altitude constraint text; says 'top altitude assigned by ATC'. The CPDLC top altitude assigned was 7000 feet; the same as the BLOSM waypoint of 7000 feet or below on the SID. Just prior to BLOSM; ATC cleared us to 'climb via except maintain 10;000 feet.' Again very confusing clearance wording and a total setup for miscommunication. Wording should be 'after BLOSM climb and maintain 10;000 feet.'
Air Carrier Captain reported the text on the new SID regarding the assigned altitude by ATC is confusing after receiving the CPDLC which contain a hard altitude.