AIM Text
- Operators not authorized for RNP 10 or RNP 4 may still file for any route and altitude within the Gulf of America CTAs. However, clearance on the operator's preferred route and/or altitude will be provided as traffic allows for 90 or 100 NM lateral separation between the non-RNP 10 aircraft and any others. Priority will be given to RNP 10 or RNP 4 aircraft.
- Operators of aircraft not authorized RNP 10 or RNP 4 must include the annotation “RMK/NONRNP10” in Item 18 of their ATC flight plan.
- Pilots of non-RNP 10 aircraft are to remind ATC of their RNP status; i.e., report “negative RNP 10” upon initial contact with ATC in each Gulf CTA/FIR.
- Operators will likely benefit from the effort they invest to obtain RNP 10 or RNP 4 authorization, provided they are flying aircraft equipped to meet RNP 10 or RNP 4 standards.
Source: FAA Aeronautical Information Manual · current edition · paragraph 4-7-2.
The short answer
This AIM section is FAA advisory guidance for operators not authorized RNP 10 or RNP 4 flying in the Gulf of America CTAs. Such aircraft may file any route and altitude but receive 90 or 100 NM lateral separation as traffic allows, with priority given to RNP 10 or RNP 4 aircraft.
Research Notes
Common Questions
Can non-RNP 10 aircraft still fly in the Gulf of America CTAs?
Yes. Per this guidance, operators not authorized for RNP 10 or RNP 4 may still file for any route and altitude, but clearance on preferred routing is provided as traffic allows for 90 or 100 NM lateral separation.
How must a non-RNP 10 aircraft annotate its flight plan?
What should a non-RNP 10 pilot tell ATC on initial contact?
According to this section, pilots of non-RNP 10 aircraft are to remind ATC of their RNP status, reporting “negative RNP 10” upon initial contact with ATC in each Gulf CTA/FIR.