The former head of the NYPD Aviation Unit allegedly grounded his platoon commander because the officer is old and white, according to a lawsuit.

John Biscarri, a veteran pilot who joined the NYPD after the Sept. 11, 2001 terror attacks and made it into the department’s vaunted Aviation Unit in 2017, claims former deputy chief Winston Faison put him on desk duty for months, derided him as “old as f–k,” and booted him from his office and gave it to his black driver.

Biscarri, 55, who is Hispanic, also claimed Faison, who is black, passed him over for promotion and at times refused to even speak to him, according to his Manhattan Supreme Court discrimination lawsuit against the former commanding officer and the city.

It’s at least the seventh lawsuit accusing Faison, 53, of wrongdoing since The Post’s exclusive July report detailing issues in the unit and allegations Faison damaged a helicopter, tried to block a probe from the Federal Aviation Administration, and sidelined veteran officers in favor of unqualified, black cronies.

“It’s been my dream to be a part of this unit,” Biscarri, who is still employed in the Aviation unit, told The Post.

“For me and a lot of members of this unit it was disheartening, it was a time when . . . our careers were turned upside down,” he added.

Biscarri was at an annual pilot training in Texas when Faison was assigned to take over the unit, he recalled.

“He wanted to get rid of me in the worst way,” the Long Islander recalled, noting how Faison allegedly refused to let him attend a retiring colleague’s going-away ceremony. “He made it a toxic work environment.”

Faison, who is under investigation by the feds for alleged overtime abuse and retired once the allegations against him became public, allegedly damaged a $40,000 tail rotor on the unit’s $1.5 million Bell helicopter.

Faison denied the allegations during a recent podcast appearance on The Sal Greco Show.

Biscarri, who is seeking unspecified damages, said in court papers that the NYPD apologized to him and restored his office and assignments after Faison’s exit.

“Faison built a command culture that rewarded loyalty to his skin color and punished everyone else,” said Biscarri’s attorney, John Scola, who added Faison “hijacked the NYPD’s elite Aviation Unit for his own racial patronage network and personal financial gain.”

“The City of New York is committed to ensuring a fair and inclusive workplace. We will review the case once served and respond in the litigation,” a Law Department spokesman said.

Faison’s lawyer referred The Post to the NYPD which did not return a request for comment.