In a large bowl arrange the arugula, red onion, mango, pom seeds, avocado, and cucumber.
In a small bowl, combine the freshly juiced orange juice and champagne vinegar. Slowly stream in the olive oil while whisking together to form an emulsion. Season with salt and pepper.
Drizzle some of the dressing over the salad and toss. Taste and add more dressing if needed being careful not to add too much.