<< >> NASA ASRS Report 1223223, December 2014

An air carrier pilot commented that standard RNAV design; such as the phx snobl 2; should have a clear bold top procedure clearance altitude (8;000 feet) depicted on the chart to prevent confusion with higher constraints (9;000 feet) in bold print.

Attributes
ACN	1223223
Time
Date	201412
Aircraft 1
Make Model Name	No Aircraft
Flight Phase	Parked
Component
Aircraft Component	Aero Charts
Events
Anomaly	No Specific Anomaly Occurred All Types

Narrative:

All RNAV departures should have a top altitude box in bold on the top of the chart. Trying to find the top altitude can be irritating; time consuming; and can; in some instances; create misleading information.the snobl 2 RNAV in phx is one example. In clear bold print on the chart you see an 'at or below 9;000'; however; if you search in the fine print of the routing box you notice a 'maintain 8;000.' very poor design that has the possibility of being set incorrectly on the departure and possibly result in a possible mid-air collision.change all departures that have a 'climb via' top altitude on chart to a bold boxed 'top altitude' in the same position on chart.

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Original NASA ASRS Text

Title: An air carrier pilot commented that standard RNAV design; such as the PHX SNOBL 2; should have a clear bold top procedure clearance altitude (8;000 feet) depicted on the chart to prevent confusion with higher constraints (9;000 feet) in bold print.

Narrative: All RNAV departures SHOULD have a top altitude box in bold on the top of the chart. Trying to find the top altitude can be irritating; time consuming; and can; in some instances; create misleading information.The SNOBL 2 RNAV in PHX is one example. In clear bold print on the chart you see an 'at or below 9;000'; however; if you search in the fine print of the routing box you notice a 'maintain 8;000.' VERY POOR DESIGN that has the possibility of being set incorrectly on the departure and possibly result in a possible mid-air collision.CHANGE all departures that have a 'Climb Via' top altitude on chart to a bold boxed 'Top Altitude' in the same position on chart.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.