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AIM

10/12/17

1−2−6

Performance−Based Navigation (PBN) and Area Navigation (RNAV)

target level of safety. RNP AR DP has lateral

accuracy values that can scale to no lower than RNP

0.3 in the initial departure flight path. Before

conducting these procedures, operators should refer

to the latest AC 90−101, Approval Guidance for RNP

Procedures with AR. (See paragraph 5−4−18.)

(4) Advanced RNP (A−RNP). Advanced

RNP is a NavSpec with a minimum set of mandatory

functions enabled in the aircraft’s avionics suite. In

the U.S., these minimum functions include capability

to calculate and perform RF turns, scalable RNP, and

parallel offset flight path generation. Higher

continuity (such as dual systems) may be required for

certain oceanic and remote continental airspace.

Other “advanced” options for use in the en route

environment (such as fixed radius transitions and

Time of Arrival Control) are optional in the U.S.

Typically, an aircraft eligible for A−RNP will also be

eligible for operations comprising: RNP APCH,

RNP/RNAV 1, RNP/RNAV 2, RNP 4, and

RNP/RNAV 10. A−RNP allows for scalable RNP

lateral navigation values (either 1.0 or 0.3) in the

terminal environment. Use of these reduced lateral

accuracies will normally require use of the aircraft’s

autopilot and/or flight director. See the latest AC

90−105 for more information on A−RNP, including

NavSpec bundling options, eligibility determina-

tions, and operations approvals.

NOTE−

A−RNP eligible aircraft are NOT automatically eligible for

RNP AR APCH or RNP AR DP operations, as RNP AR

eligibility requires a separate determination process and

special FAA authorization.

(5) RNP 1. RNP 1 requires a lateral

accuracy value of 1 for arrival and departure in the

terminal area, and the initial and intermediate

approach phase when used on conventional proce-

dures with PBN segments (for example, an ILS with

a PBN feeder, IAF, or missed approach). RF turn

capability is optional in RNP 1 eligibility. This means

that your aircraft may be eligible for RNP 1

operations, but you may not fly an RF turn unless RF

turns are also specifically listed as a feature of your

avionics suite.

(6) RNP 2. RNP 2 will apply to both

domestic and oceanic/remote operations with a

lateral accuracy value of 2.

(7) RNP 4. RNP 4 will apply to oceanic and

remote operations only with a lateral accuracy value

of 4. RNP 4 eligibility will automatically confer

RNP 10 eligibility.

(8) RNP 10. The RNP 10 NavSpec applies

to certain oceanic and remote operations with a lateral

accuracy of 10. In such airspace, the RNAV 10

NavSpec will be applied, so any aircraft eligible for

RNP 10 will be deemed eligible for RNAV 10

operations. Further, any aircraft eligible for RNP 4

operations is automatically qualified for RNP 10/

RNAV 10 operations. (See also the latest AC 91−70,

Oceanic and Remote Continental Airspace Opera-

tions, for more information on oceanic RNP/RNAV

operations.)

(9) RNP 0.3. The RNP 0.3 NavSpec

requires a lateral accuracy value of 0.3 for all

authorized phases of flight. RNP 0.3 is not authorized

for oceanic, remote, or the final approach segment.

Use of RNP 0.3 by slow−flying fixed−wing aircraft is

under consideration, but the RNP 0.3 NavSpec

initially will apply only to rotorcraft operations. RF

turn capability is optional in RNP 0.3 eligibility. This

means that your aircraft may be eligible for RNP 0.3

operations, but you may not fly an RF turn unless RF

turns are also specifically listed as a feature of your

avionics suite.

NOTE−

On terminal procedures or en route charts, do not confuse

a charted RNP value of 0.30, or any standard final

approach course segment width of 0.30, with the NavSpec

title “RNP 0.3.” Charted RNP values of 0.30 or below

should contain two decimal places (for example, RNP 0.15,

or 0.10, or 0.30) whereas the NavSpec title will only state

“RNP 0.3.”

(b) Application of Standard Lateral Accu-

racy Values. U.S. standard lateral accuracy values

typically used for various routes and procedures

supporting RNAV operations may be based on use of

a specific navigational system or sensor such as GPS,

or on multi−sensor RNAV systems having suitable

performance.

(c) Depiction of PBN Requirements. In the

U.S., PBN requirements like Lateral Accuracy

Values or NavSpecs applicable to a procedure will be

depicted on affected charts and procedures. In the

U.S., a specific procedure’s Performance−Based

Navigation (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

3/15/07

7110.65R CHG 2

AIM

2/28/19