Robert Penner has develop new approach for AS3 events, inspired by C# events and signals/slots in Qt. This project call Signals. This can be an alternative solutions to manage your Events.

Here are the Concept and Philosophy sections for a start:

The Concept

• A Signal is essentially a mini-dispatcher specific to one event, with its own array of listeners.
• A Signal gives an event a concrete membership in a class.
• Listeners subscribe to real objects, not to string-based channels.
• Event string constants are no longer needed.

Philosophy

• Composition and interfaces are favored over inheritance.
• Events in interfaces are a good thing.
• Event types are classes, not strings.
• Event classes should focus on the data they contain, not on who sends them.
• Event classes should not contain string constants that various other classes use.
• Test-Driven Development (TDD) is essential and fun.
• So far, not a single static keyword in the source.
• No singletons.

Further more details you can visit  at Google Code project: http://code.google.com/p/as3-signals/