The top brass from NBC in New York are due in town Wednesday . . . to give Channel 4 the once-over, perhaps even a twice-over . . . and listen to gripes (although it's hard to imagine there will be any) from the staff of the network-owned station . . .

Included in the inspection party are board chairman and chief executive officer Grant Tinker . . . vice chairman Irwin Segelstein and NBC president and chief operating officer Bob Mulholland . . .

Tinker originated these get-acquainted-with-the-new-management meetings when he took over last year and the trio has already visited the other four NBC-owned stations as well as the NBC headquarters staff . . .

And from our Miracles Still Happen File: Asked by an ABC Radio correspondent about recently turning 40 . . . Linda Grey, who plays Sue Ellen on "Dallas," took a look at the calendar and said, no, "I'm 27. Not a day over 27" . . . Her son remains 18 . . .

ABC Sports reports that 169 network affiliates cleared the New York City Marathon yesterday . . . compared with a so-so 116 clearances for last year's run, which for sheer excitement ranked somewhere between watching the grass grow in Central Park and reading about Linda Grey turning 27 in the TV Column on a very slow Monday . . .

Joining National Public Radio this week are former CBS News correspondent Lee Thornton . . . most recently an anchor for WJBK, the CBS affiliate in Detroit . . . who joins David Molpus as cohost of the "Weekend All Things Considered" . . .

And Faith Fancher, a former correspondent for Cable News Network's Washington bureau . . . returns to NPR as a reporter . . .

NBC, the World Series under its belt, says that after the first three weeks and three days of the 1982-83 season . . . it was No. 1 in the season-to-date prime-time ratings, with CBS second and ABC third . . .

CBS and ABC both promise to update those figures for us just as soon as possible . . .

Former President Carter starts a five-day outing on "Today" during the first half-hour of this morning's telecast . . .

In the wake of that "Taxi" episode Thursday night featuring a "priest" who advises Simka to repay Latka's unfaithfulness by being unfaithful herself . . . NBC recorded only 10 "negative" phone calls regarding the show in New York, three in both Chicago and Cleveland, one in Los Angeles (against three approving phone calls) and one negative call in Washington . . . Moving Right Along

The people who make Tylenol yesterday began trying to prepare the public for a return of the capsules to store shelves . . . McNeil Consumer Products Co. started a four-day TV ad campaign aimed at getting across the message . . . "We want you to continue to trust Tylenol" . . .

In a message for the campaign, Dr. Thomas N. Gates, the company's medical director, said Extra-Strength Tylenol capsules will eventually return in "tamper-resistant containers" . . .

The WETA board of trustees elected seven new members last week . . .

Named were David Carley, former president of the National Association of Public Television Stations, and currently a partner in the Carley Capital Group . . . a Wisconsin investment firm; Patricia Worthy Clement, an adjunct professor at the Howard University School of Law and chairman of the Washington Metropolitan Area Transit Commission; and Thomas S. Condit, president and chief executive officer of D.C. National Bancorp Inc. . . .

Also elected were Maj. Gen. Calvin G. Franklin, commanding general of the D.C. National Guard; Susan Ruth Gelman, a staff attorney with the Department of Labor; Alfred P. (Bo) Statham, vice president of corporate affairs at COMSAT; and Myrna D. Torres, a senior associate with the Intertec Group here and the founder of the Hispanic Institute for the Performing Arts in Washington . . .

NBC News correspondent Rebecca Sobel will substitute for vacationing Linda Ellerbee as co-anchor of "NBC News Overnight" this week . . .

Hollywood Reporter says that former "CHiPs" star Larry Wilcox is now a producer for Jack Anderson's syndicated investigative show . . .

And Newsweek will report today that the Democrats . . . short of spokesmen who aren't running for president . . . have chosen former secretary of state Edmund Muskie to appear in four 30-second commercials attacking the Republican stance on Social Security . . .

"This Week With David Brinkley," the ABC Sunday public-affairs show that will celebrate its first anniversary on Nov. 14 . . . is outscoring its NBC and CBS competition so far (well, the first three weeks, anyway) in the fourth quarter and its audiences are up 40 percent from the same period last fall when "Issues and Answers" filled the ABC Sunday slot . . .

(Are you still with us out there?) . . .

Terry Irving, already assigned as a producer for "Good Morning America" news and "ABC News This Morning" out of the Washington bureau . . . has also been assigned to be a producer for "The Last Word," the late-night news magazine show, which debuts tonight on the network . . .

ABC has begun production of "Mystic Warrior" . . . a five-hour version of the nine-hour mini-series originally planned as an adaptation of the novel "Hanta Yo" . . .

(You haven't missed your bus, have you?) . . .

The project was a hot item in 1979 when the success of "Roots II" followed on the amazing popularity of the original "Roots" on ABC . . . especially since the rights to the Ruth Beebe Hill novel (which ABC envisioned as an Indian "Roots") were held by David Wolper and Stan Margulies . . . who had produced the two big-audience mini-series for Warner Bros. . . .

But the Sioux Indians protested the accuracy of Hill's novel, which was set between 1750 and 1835 . . . and before a word was typed on a TV script ABC decided to withdraw, but not kill the project (which would have meant a big financial settlement for the producers) . . .

Even today, "Mystic Warrior," despite the fact that a Sioux journalist has been signed as an adviser and Indian actors have been signed for most of the roles, is still being attacked by some members of the Sioux tribe . . .