The Associated Press

After losing two of its signature comedies, NBC will add five new series in the fall, casting Heather Locklear as an airport chief and bringing a crime drama back to the 50th state.

Locklear stars with Blair Underwood in LAX, while Hawaii recalls the long-running series Hawaii Five-O, which ran from 1968 to '80, and Magnum, P.I., from 1980 to '88 (both on CBS).

NBC was the first of the broadcast networks to announce its schedule, part of a full week of such unveilings to advertisers, who are then expected to buy some $9 billion worth of commercial time. ABC and the WB are up today.

NBC's Tuesday night undergoes the biggest makeover, with the comedies Whoopi and Happy Family getting the ax.

Initially worried about losing two high-profile shows, NBC had a solid season and minted a new hit, The Apprentice, which will be back in the fall.

As previously announced, Matt LeBlanc's Friends spinoff, Joey, will take over his old show's key time slot Thursday at 8 p.m. And the Frasier time slot at 9 p.m. Tuesday will be filled with an animated comedy, Father of the Pride, about the lions that perform in Siegfried and Roy's Las Vegas show. The fifth show for fall is Medical Investigation (9 p.m. Friday), a drama based on true stories about medical mysteries from the National Institutes of Health.

NBC said that it's emphasizing a year-round schedule, with new original programming premiering throughout the season.

Some already have time slots: Revelations, a thriller starring Bill Pullman as a scientist worried about Armageddon, will fill in for The West Wing in midseason; and The Contender, Mark Burnett and Sylvester Stallone's boxing reality series, will go up against American Idol on Tuesdays.

In something of a surprise, the anticipated third spinoff of Law & Order starring Jerry Orbach wasn't on the fall schedule.

NBC also announced that Dennis Farina will join the cast of Law & Order; that the comedy Scrubs has been renewed for two seasons; and that Carson Daly has signed up for three more years as host of Last Call.

Additional new shows ordered by NBC:

• Crazy for You, a midseason comedy with Jennifer Finnigan (Crossing Jordan) and Josh Cooke as a mismatched romantic couple.

• The Men's Room, a midseason comedy about three men - aged 22, 32 and 42 - trying to come to grips with life at different stages.

• The Office, an American remake of the popular British series, scheduled for midseason.