Aeronautical Information Manual (AIM), page 94
AIM 12/10/15
TBL 1-2-1
U.S. Standard RNP Levels
RNP Level Typical Application Primary Route
Width (NM) -
Centerline to
Boundary
0.1 to 1.0 RNP AR Approach Segments 0.1 to 1.0
0.3 to 1.0 RNP Approach Segments 0.3 to 1.0
1 Terminal and En Route 1.0
2 En Route 2.0
4 Projected for oceanic/remote areas where 30 NM horizontal 4.0
separation is applied.
10 Oceanic/remote areas where 50 NM lateral separation is 10.0
applied.
1-2-3. Use of Suitable Area Navigation or route based on operational VOR using that RNAV
(RNAV) Systems on Conventional system without monitoring the VOR.
Procedures and Routes NOTE-
1. Additional information and associated requirements
a. Discussion. This paragraph sets forth policy, are available in Advisory Circular 90-108 titled "Use of
while providing operational and airworthiness Suitable RNAV Systems on Conventional Routes and
guidance regarding the suitability and use of RNAV Procedures."
systems when operating on, or transitioning to,
2. Good planning and knowledge of your RNAV system are
conventional, non-RNAV routes and procedures critical for safe and successful operations.
within the U.S. National Airspace System (NAS):
3. Pilots planning to use their RNAV system as a substitute
1. Use of a suitable RNAV system as a means of navigation guidance in lieu of an out-of-service
Substitute Means of Navigation when a Very-High NAVAID may need to advise ATC of this intent and
Frequency (VHF) Omni-directional Range (VOR), capability.
Distance Measuring Equipment (DME), Tactical Air 4. The navigation database should be current for the
Navigation (TACAN), VOR/TACAN (VORTAC), duration of the flight. If the AIRAC cycle will change
VOR/DME, Non-directional Beacon (NDB), or during flight, operators and pilots should establish
compass locator facility including locator outer procedures to ensure the accuracy of navigation data,
marker and locator middle marker is out-of-service including suitability of navigation facilities used to define
(that is, the navigation aid (NAVAID) information is the routes and procedures for flight. To facilitate validating
not available); an aircraft is not equipped with an database currency, the FAA has developed procedures for
Automatic Direction Finder (ADF) or DME; or the publishing the amendment date that instrument approach
installed ADF or DME on an aircraft is not procedures were last revised. The amendment date follows
operational. For example, if equipped with a suitable the amendment number, e.g., Amdt 4 14Jan10. Currency of
graphic departure procedures and STARs may be
RNAV system, a pilot may hold over an out-of-
ascertained by the numerical designation in the procedure
service NDB.
title. If an amended chart is published for the procedure, or
2. Use of a suitable RNAV system as an the procedure amendment date shown on the chart is on or
after the expiration date of the database, the operator must
Alternate Means of Navigation when a VOR, DME,
not use the database to conduct the operation.
VORTAC, VOR/DME, TACAN, NDB, or compass
locator facility including locator outer marker and b. Types of RNAV Systems that Qualify as a
locator middle marker is operational and the Suitable RNAV System. When installed in accord-
respective aircraft is equipped with operational ance with appropriate airworthiness installation
navigation equipment that is compatible with requirements and operated in accordance with
conventional navaids. For example, if equipped with applicable operational guidance (e.g., aircraft flight
a suitable RNAV system, a pilot may fly a procedure manual and Advisory Circular material), the
1-2-6 Performance-Based Navigation (PBN) and Area Navigation (RNAV)
Page 94 of the Aeronautical Information Manual (AIM.pdf)
AIM: Official Guide to Basic Flight Information and ATC Procedures