Likely at his fave Friday hideaway haunt

firmed that he is a regular presence on Fridays but suddenly got amnesia when asked if he was there that particular Friday.

“Nobody probably remembers because he’s here all the time,” one employee said.

His City Hall spokesman Eric Phillips for the 11th day in a row refused to divulge the mayor’s schedule or why he needed a pricy helicopter ride to get to his speech in Long Island City, saying only that he’d been at “meetings” in Brooklyn.

“We don’t make public the details of nonpublic, internal, personal or political meetings,” said Phillips.

De Blasio’s 2017 campaign spokesman declined to comment.

Asked about it last week, de Blasio insisted that he was within his rights to use the helicopter when his security detail thought it was needed, and pointed to a Conflicts of Interest Board ruling about elected officials and cityowned vehicles.

That ruling mentions cars, not helicopters, but his office said it applies to all modes of transport.

The ruling says elected officials who require 24/7 supervision from the NYPD — like the mayor — are entitled to use city-owned vehicles professionally and personally, and they don’t have to reimburse taxpayers.

But it would probably help him to be more open with how he’s using taxpayer resources, say political experts.

“The issue is really transparency,” said George Arzt, a Democratic consultant and former press secretary for the late Mayor Ed Koch.

“If you use a helicopter, there is a right to know from the public. It baffles me that he wouldn’t say the exact reason for why he was using it.”

That refusal has led to a slew of unnecessary negative headlines, said Arzt.

“I don’t quite understand why he would want to do this battle and have the story every day in the papers,” said Arzt.

If you spotted the mayor in Brooklyn Oct. 14, send an email to The News at: NYDNtips@nydailynews.com.