Answer to Wednesday’s (July 18) AVsavvy Question

> | July 20, 2012 | 2 Comments
Print Friendly, PDF & Email

In this past Wednesday’s AVsavvy question, we showed you the following ICAO flight plan message and asked you to find the error:

(FPL-N000XX-IG
-GLF5/M-SDGHIJPRWXYZ/SD
-KHOU1300
-N0452F450 ELD3 ELD Q32 BNA J46 VXV J22 PSK DCT GVE JAIKE3
-KTEB0300 KEWR
-REG/N000XX SEL/TEST DOF/120512 DAT/V RMK/ADSB
NAV/RNP10
E/0418 P/TBN R/UVE D/2 10 YELLOW A/RED WHITE BLUE RED STRP)

IMPORTANT: If you haven’t yet participated, YOU CAN STILL TURN BACK NOW AND TEST YOUR SKILLS.

Thank you to everyone who participated. Here are the answers and explanations below so you can see how you did:

Option 1: Aircraft can’t plan to operate at F/L 450 on a Q-route (Q32).
This is not the correct response. The F/L depends on what is permitted for the specific airway.

Option 2: Aircraft can’t plan to operate on Q-route as the message does not correctly depict the appropriate US RNAV descriptors.
This is the correct response. In the US, the use of Q-Routes requires the flight to be RNAV2 certified with GNSS and/or DME/DME/IRU equipment. The use of RNAV SIDs and STARs requires the flight to be RNAV1 certified with GNSS and/or DME/DME/IRU equipment.

The FAA requires an indication in Item 18 of the flight plan to show that the flight meets these certification levels. This is done in the NAV/ sub-field of Item 18.

Examples of this indication:
NAV/RNVD1E2A1
NAV/RNVE99
NAV/RNVE2

D1 = Departure RNAV1 (e.g. RNAV SID)
A1 = Arrival RNAV1 (e.g. RNAV STAR)
E2 = Enroute RNAV2 (e.g. Q-Route)
E99 = Point to Point (… PXV DCT AIR …)

In the question above the route has a Q-Route and an RNAV STAR, but Item 18 indicates NAV/RNP10 and no US RNAV codes as required by FAA guidance.

Option 3: Aircraft can plan to operate on Q-route as the message indicates the aircraft is approved for RNP10 operations.
This is not the correct response. Please see explanation under Option 2.

Option 4: Aircraft is non-RVSM therefore it can’t operate at F/L 450.
This is not the correct response. Please see explanation under Option 2.

Option 5: There are no errors in the filed ICAO flight plan message.
This is not the correct response. Please see explanation under Option 2.

How did you like this week’d AVsavvy question? Would you like to us to put together more AVsavvy questions in the future? Let us know in the comments area below.

Introducing uvGO. Now you can manage all of your missions in one, easy view.

Tags:

Category : Q&A

Related Posts

About

Print Friendly, PDF & Email

This is a group account for the people busily trying to make this blog the best it can be for you and the rest of the business-aviation community. If you have questions or comments about this blog, you can reach us at operationalinsight@univ-wea.com.

Operational Insight is a moderated blog.
Before adding your comments, please read our Comment Policy.