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6/17/21 

AIM 

aircraft should comply with the SID lateral path and begin 
an unrestricted climb to FL240. Compliance with 
published speed restrictions is still required unless 
specifically deleted by ATC. 

9. 

Altitude restrictions published on an ODP are 

necessary for obstacle clearance and/or design 
constraints. Crossing altitudes and speed restrictions 
on ODPs cannot be canceled or amended by ATC. 

i.  PBN Departure Procedures 

1. 

All public PBN SIDs and graphic ODPs are 

normally designed using RNAV 1, RNP 1, or A

RNP 

NavSpecs. These procedures generally start with an 
initial track or heading leg near the departure end of 
runway (DER). In addition, these procedures require 
system performance currently met by GPS or 
DME/DME/IRU PBN systems that satisfy the criteria 

discussed in the latest AC 90

100, U.S. Terminal and 

En Route Area Navigation (RNAV) Operations. 
RNAV 1 and RNP 1 procedures must maintain a total 
system error of not more than 1 NM for 95 percent of 
the total flight time. Minimum values for A

RNP 

procedures will be charted in the PBN box (for 
example, 1.00 or 0.30). 

2. 

In the U.S., a specific procedure’s PBN 

requirements will be prominently displayed in 
separate, standardized notes boxes. For procedures 
with PBN elements, the “PBN box” will contain the 
procedure’s NavSpec(s); and, if required: specific 
sensors or infrastructure needed for the navigation 
solution, any additional or advanced functional 
requirements, the minimum RNP value, and any 
amplifying remarks. Items listed in this PBN box are 
REQUIRED for the procedure’s PBN elements. 

Departure Procedures 

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2

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