Is Extant only the SECOND national primetime scripted TV-drama with a female African-American lead?

Is Extant only the SECOND national primetime scripted TV show with an African-American female lead? I'm looking specifically for mainstream networks. To be explicit, BET is not that - talkshow and reality TV isn't it either.

Only other show I can think of is Scandal.

I've noticed that a majority of TV shows have this casting mold:

1. Older white male
2. Younger white male / Younger white female
3. Younger white female/ Younger white male
4. Minority (used to be African-American, now interchangeable with Asians/Latinos)

I have also noticed the following:

• Mainstream, primetime shows with a female lead are still a minority.

• To be sure there ARE some shows that have "a" Afram female protagonist, but they're pretty much token.

• Ever noticed how African-Americans play authority figures that are completely minor roles? Like judges, doctors? E.g. Tamara Tunny on CSI Miami

• "The Rush Hour" movies were completely shocking, because there was NO white lead at all.

• There are a FEW shows with MALE Afram leads, but these hardly ever lasted more than one season, only the Unit comes to mind, and whether Haysbert was the main protagonist is debatable