B737-800
Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Workload; Distraction; Human-Machine Interface; Confusion
ATC Issue All Types; Deviation - Altitude Crossing Restriction Not Met; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Returned To Clearance
Procedure; Chart Or Publication
This RNAV arrival has a descent from ROADE intersection between FL190 and 17000 ft to PHIYA intersection which had a restriction at or below 13000. 11.3 miles between fixes. Even if ROADE is selected as a hard 17000 foot altitude; you can't make it to PHIYA at 13000 feet. If ATC slows you down; problem is worse. Who designs these things; anyway? Certainly not someone who flies a 737. Told ATC unable to descend via. Gave alternative instructions. Told us they've also reported this arrival as unsatisfactory; no fix.
B737 Captain reported the DSNEE 1 Arrival into SNA with a 4;000 ft descent over 11.3 NM is not well designed.