CFR 129 C384 Job Aid/Instructions Rev:20

Last update 05/12/2017. All recommendations and corrections need to either the International FAA or Industry Chair of the Part 129 OSWG. For directory listing current chairs go to the most recent OSWG meeting agenda. All meeting agendas start with the year and can be found at the following link:‑1

Change: added directions for where to send in Job Aid/Instructions recommendations and corrections. Also, on 5/12/2017 added a new dropdown choice (“Autopilot and/or Flight Director”) to 5th column of the table 1 in OpSpec C384.

OpSpec C384 identifies each make, model, and series (M/M/S) of aircraft, Navigation System M/M/S and Software version limitations, and lowest authorized RNP the foreign air carrier is authorized to use when conducting RNP AR IAP operations within the United States. The most restrictive of the following will be entered: that authorized by the operator’s CAA, FAA headquarters (HQ) concurrence memo and the operator’s FAA principal operations inspector (POI).

1)    All aircraft information must be first entered into the Web‑based automated Operations Safety System (WebOPSS) in the left navigation area, under CHDO > Maintain Operator Data > Aircraft.

a)    From the dropdown in Table 1 of the OpSpec, under the column “Aircraft M/M/S” select an aircraft M/M/S. Use the “+” symbol to add additional rows. Repeat for each authorized aircraft.
b)    Enter navigation system make/model/series and software version. The specific make and model series of navigation equipment including the current software version installed on each associate aircraft M/M/S must be entered in the column labeled “Navigation System” of Table 1. The Navigation System column is further broken down into two columns: one for M/M/S and one for Software Version. PIs should remind operators that any change to the OpSpec, e.g., a change in the Software Version constitutes a change to the OpSpec and must be authorized prior to use in U.S. airspace.
c)    Enter limitations in the column labeled “Limitations.” If there are no limitations, then select “None” from the dropdown; do not leave blank. Enter all applicable limitations as follows:

“Not authorized to use temperature compensation system.” Enter this limitation unless the aircraft has temperature compensation in accordance with AC 90‑101, appendix 2, paragraph 3a(7), and the foreign air carrier provides pilot training on the use of the temperature compensation function.

“Not authorized procedures with missed approaches requiring RNP less than 1.0.” Enter this limitation when the aircraft/navigation system does not meet AC 90‑101, appendix 2 criteria—Approaches with a Missed Approach less than RNP 1.0.”

NOTE:  When there are dropdowns the box will not expand to display the text while entering/editing, however the PI may scroll left and right as well as up and down to find the spot they want to type any additional limitation that pertain to the selected dropdown. The PI will be able to see all of the text that was entered when they hit the preview button.

d)    Enter autopilot or flight director (FD) requirement. RNP AR procedures with RNP values less than RNP 0.3 or with RF legs require the use of autopilot or FD driven by the RNAV system in all cases. Select in Table 1, in the column labeled “Autopilot Coupled or Flight Director Required,” one of the following in accordance with the aircraft/navigation system qualification:

“Autopilot coupled with Flight Director”


“Flight Director Only”

NOTE:  PIs may also select “Autopilot and/or Flight Director” if headquarter concurrence was received and the operator will be training their flight crews for both autopilot and flight director to that RNP value. As of 5/12/2017 OpSpec C384 table 1, 5th column has the following 3 dropdown choices:

As of 5/12/2017 OpSpec C384 table 1, 5th column has the following 3 dropdown choices:

e)    Enter Lowest Authorized RNP Value in Table 1 of the OpSpec, in the column labeled “Lowest RNP.” These values will vary depending on the M/M/S and navigation system combination.

NOTE:  Many aircraft will have different RNP values associated with “Autopilot coupled with Flight Director” or “Flight Director Only” operations.

f)    Enter Additional Aircraft Capabilities. Select any additional aircraft capability from the list. If selecting more than one value, hold down the control key (“Ctrl”) while clicking on the value(s) in the list. If manually adding capabilities, hold down the SHIFT key while clicking on the backslash “\” key after each manually added capability. This will ensure that the selections and/or entries appear in a list format for ease of reading. DO NOT USE THE ENTER KEY when selecting multiple values. Click back on the dropdown arrow to close the dialog.
g)    Since all operators in U.S. airspace must have radius to Fix (RF) leg capability the “RF legs” dropdown must be selected for all operators to whom C384 issued. Any operator which does not have RF leg capability must not be issued C384.

NOTE:  If any aircraft system required for RNP AR is modified (e.g., software or hardware change/revision), the operator must obtain the manufacturers’ updated aircraft qualification and operational documentation confirming continued suitability for RNP AR approach operations. Unless the manufacturer documentation indicates the change/revision has no effect on RNP AR operations, AFS‑400 and the division manager of AFS‑50, must provide a revised concurrence memo to the operator’s use of the aircraft with modifications for RNP AR operations. The IFO should coordinate with the Performance Based Flight Systems Branch (AFS‑470) and AFS‑50 HQ to facilitate processing of the operator’s request for operational approval with the changed/revised equipment.

Software or hardware changes must be supported by the manufacturer’s updated aircraft qualification and operational documentation.

FAA RNP AR educational materials may be found at the following website: