Dispatcher reported a communications breakdown between dispatcher and dispatch supervisor regarding ...

Narrative:

The flight was planned as normal. ZZZ required a takeoff alternate. I planned ZZZ1. As the crow flies its 218 nm and met the 250 nm and flap fail ad. But the routing to make it work used a v-airway down and around. Route was shy of 300 nm using v-airways. I figured that because the airport was still 218 nm; point to point; that the route was good. The cause of the event was miscommunication and misunderstanding of the takeoff alt flap fail ad between airports and which routes are acceptable. It may need to be brought to attention that planning this takeoff alternate or any takeoff alternate needs to have some clarifications. It is vague and can be confusing as to if a planned takeoff alternate route is legal point to point or flying around. I have looked (into) this and got opinions of supervisors that say it works. Now; as I was told of the event the route is as the crow flies and if we used v-airways or any other route that we would need to bring that to supervisor to input into [computer] for fuel planning that alternate route.

Original NASA ASRS Text

Title: Dispatcher reported a communications breakdown between Dispatcher and Dispatch Supervisor regarding the legality & interpretation of a takeoff alternate distance regulation.

Narrative: The flight was planned as normal. ZZZ required a takeoff alternate. I planned ZZZ1. As the crow flies its 218 nm and met the 250 nm and flap fail ad. But the routing to make it work used a V-airway down and around. Route was shy of 300 nm using V-airways. I figured that because the airport was still 218 nm; point to point; that the route was good. The cause of the event was miscommunication and misunderstanding of the takeoff alt flap fail ad between airports and which routes are acceptable. It may need to be brought to attention that planning this takeoff alternate or any takeoff alternate needs to have some clarifications. It is vague and can be confusing as to if a planned takeoff alternate route is legal point to point or flying around. I have looked (into) this and got opinions of supervisors that say it works. Now; as I was told of the event the route is as the crow flies and if we used v-airways or any other route that we would need to bring that to supervisor to input into [computer] for fuel planning that alternate route.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1732667
Time
Date	202003
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	Marginal
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Other Flight Planning
Flight Plan	IFR
Person 1
Function	Dispatcher
Qualification	Dispatch Dispatcher
Events
Anomaly	Deviation - Procedural FAR Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Dispatcher reported a communications breakdown between dispatcher and dispatch supervisor regarding the legality & interpretation of a takeoff alternate distance regulation.