Loni Anderson is mourning the loss of her beloved castmate.

Frank Bonner, who starred as Herb Tarlek in the hit sitcom “WKRP in Cincinnati,” died on Wednesday at age 79. The actor passed away “peacefully” amid a battle with Lewy body dementia, his family told TMZ.

“Frank Bonner was like family,” the actress told Fox News. “He was one of the funniest and nicest men I worked with. I am heartbroken.”

As the plaid-loving Tarlek, Bonner played a radio station sales manager who could never reel in a big account. The comedy aired from 1978 until 1982. He later reprised the role in a spinoff titled “The New WKRP in Cincinnati,” which aired from 1991 until 1993

According to the outlet, Bonner made headlines in October 1979 when he was hospitalized following a parasailing accident. He fell 20 feet and suffered several internal and back injuries, the New York Post reported.

“WKRP” castmate Gary Sandy also confirmed Bonner’s passing on Facebook.

“It Is True!” the 75-year-old wrote. “Frank Passed Away, Yesterday June 16th at 3:48 Pacific Time RIP My Great Friend!!!”