Christina Ricci, Colin Donnell

Might stewardesses follow Playboy Bunnies into cancellation? Pan Am kept losing altitude in Week 3, with just 6.42 million viewers aboard.

That's down from 7.75 million viewers a week ago — and from 10.87 million when the ABC program took off. And among 18-to-49-year-olds, the rating has swooped down from 3.1 to 2.5 to 1.9, Nielsen overnights showed. That trajectory is not good.

Preceding the 1960s drama about stewardesses at 9/8c, Desperate Housewives was down 10 percent, luring 8.46 million viewers and a 2.7 demo rating, which tied a series low (vs. last week's 9.03 million/2.9 demo rating).

Read our Desperate Housewives episode recap

In prime time's first hour Sunday, America's Funniest Home Videos reached 6.63 million people (1.4 demo rating) after getting off to its lowest-rated season debut ever last week, attracting a viewership of 6.44 million (1.5 demo rating).

The 35-minute NFL overrun on CBS threw off the numbers, as usual, but skewed stats nonetheless showed that Pan Am had the smallest audience in prime time's final hour. CBS' The Good Wife and the first 25 minutes of CSI: Miami grabbed 9.99 million and a 2.1 demo rating.

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Sunday Night Football's attractive pairing of the Green Bay Packers and Atlanta Falcons averaged 19.48 million fans (7.9 demo rating), up 20 percent from last week.

From 8 to 10, because rain scuttled the scheduled American League championship series, Fox filled in with a rerun of The X Factor, scrounging up 3.06 million viewers.

On basic cable, Breaking Bad's Season 4 finish — which turned out to be explosive — grabbed 1.9 million avid fans, 19 percent more than the previous season's conclusion, making it the show's most-watched finale yet.