It was plane madness. 
 
 Chaos erupted on JetBlue’s red-eye flight from Portland, Ore., to JFK yesterday when a drunk allegedly urinated on a sleeping 11-year-old girl. 
 
 The youngster was traveling with her sister and dad, and had been left alone for a few minutes while the others used the lavatories. 
 
 Robert Vietze, 18, of South Warren Vt., stumbled from his seat five rows behind her and emptied his bladder, a witness said. 
 
 “I was drunk, and I did not realize I was pissing on her leg,” the 6-foot-4, 195-pound Vietze said, according to law-enforcement sources. He later claimed to have consumed eight alcoholic beverages. 
 
 The girl’s father caught Vietze midstream. 
 
 “I woke up to this man yelling and literally looking like he was about to punch this kid in the face,” said the witness, who asked not to be identified. 
 
 “The father was screaming, ‘F – – k that kid! I don’t want him near my family!’ ” the passenger said. 
 
 Flight attendants separated the pair and removed Vietze to the back of the plane. They attempted to clean up the mess with liquid soap from the bathrooms, and helped to comfort the traumatized girl. 
 
 But the 5½-hour flight from hell was not over yet. 
 
 Roughly an hour before the plane landed, another passenger began to complain of chest pains, then vomited. 
 
 “Is anybody on this flight a nurse or a doctor?” the pilot said over the public-address system. “We have a medical emergency.” 
 
 With no volunteers, the flight crew kept the man calm and tried to tidy him up, again raiding the liquid-soap container. 
 
 “The pilots kept coming out of the cockpit to talk to the flight crew about what was going on,” the witness said. “When we landed, the pilot warned us that police were coming.” 
 
 Six Port Authority cops met the plane at the gate at around 6:30 a.m. 
 
 Two escorted the ill passenger off, and four took Vietze into custody. 
 
 Vietze was issued a federal summons for indecent exposure and released. 
 
 Additional reporting by Philip Messing 
 
 don.kaplan@nypost.com 
 
 ||||| NEW YORK - An 18-year-old accused of urinating on the leg of another passenger during an Oregon-to-New York City flight will not face charges, prosecutors said. 
 
 Robert Vietze, of Warren, Vt., was detained by police and then given a federal summons charging him with indecent exposure on the red-eye flight. The JetBlue plane left Portland late Tuesday and arrived at John F. Kennedy International Airport on Wednesday morning. 
 
 Vietze was intoxicated and got up from his seat during the flight and relieved himself in the cabin on another passenger, said Sara Beth Joren, a spokeswoman with the police department of the Port Authority of New York and New Jersey, which manages the airport. 
 
 As previously reported by The New York Post, Vietze said that he had drank eight alcoholic beverages, according to law enforcement sources. 
 
 The person Vietze allegedly relieved himself on was an 11-year-old girl, whose father saw the incident and started yelling at Vietze, said a witness. 
 
 Also during that same flight, a passenger complained of chest pains and then vomited, says the Post. 
 
 Police officers met the plane at the gate. Vietze was questioned, given the summons and released. 
 
 Federal prosecutors ultimately decided not to pursue the matter and dropped the case, Joren said. Robert Nardoza, spokesman for the U.S. attorney's office in Brooklyn, said he had no information about the case. 
 
 The phone rang unanswered Thursday at the only listed phone number for a Vietze family in Warren. 
 
 A spokeswoman for JetBlue Airways Corp., based in Forest Hills, N.Y., confirmed that an "incident" had taken place aboard the flight and that police had been called, but she declined to discuss it further. ||||| He probably just pissed away his Olympic dreams. 
 
 The drunken JetBlue passenger who treated a sleeping 11-year-old girl like his personal potty is a member of the US Ski Team who refused to apologize yesterday for the high-altitude humiliation. 
 
 Robert “Sandy” Vietze, 18, is among the 75 most elite skiers in the nation — but he may have blown his chance to compete in the 2014 Winter Games in Russia. 
 
 His name was bumped from the team’s developmental roster yesterday afternoon, although officials refused to comment about his status. 
 
 The leaky loser expressed no remorse outside his family’s palatial Vermont home, where he ignored questions about the incident and showed no interest in apologizing to his victim. 
 
 UPDATE: VIETZE CUT FROM OLYMPIC SKI TEAM 
 
 “We have no comment, nothing to say,” snapped Vietze’s mother, Abigail, as they hauled luggage and ski equipment from a gray BMW. 
 
 Vietze had taken the red-eye flight from Portland, Ore., to JFK Wednesday on his way home from a weeklong training camp with the US Ski Team at Mount Hood in Oregon. 
 
 It was lousy luck for his young victim, who was flying with her sister and cancer-stricken father on a trip to see her grandmother on eastern Long Island for the first time since his diagnosis. 
 
 Soon after takeoff, Vietze stumbled from his seat five rows behind the child and emptied his bladder onto the girl, who was briefly left alone while her dad and sister were in restrooms. 
 
 “I was drunk, and I did not realize I was pissing on her leg,” the 6-foot-4, 195-pound Vietze later told cops, according to law-enforcement sources. 
 
 The girl’s father, a Stage 4 cancer patient, caught Vietze midstream and tried to wipe him out. 
 
 “F- -k that kid. I don’t want him near my family!” he yelled. 
 
 Vietze slurred that he had suffered “an accident,” according to another passenger. 
 
 Flight attendants had to separate the men. 
 
 Vietze admitted to cops that he had consumed eight alcoholic beverages before boarding JetBlue Flight 166. 
 
 He was issued a federal summons for indecent exposure, but federal prosecutors later decided to drop the case, according to Port Authority cops. 
 
 The father refused to allow his traumatized 11-year-old daughter to be interviewed by cops, likely sparing Vietze criminal charges. 
 
 Yesterday, the girl’s family attempted to recover from the disgusting incident by attending the Yankee game. 
 
 Last May, when Vietze was invited to join the ski team, he was the toast of the Green Mountain Valley School in Waitsfield, Vt., which describes itself as “a world-class ski academy.” 
 
 “He’s a very nice boy, one of the nicest, most respectable young people I’ve ever met,” said a neighbor, Colin Seaman. 
 
 “It would be very hard for me to believe that this even happened.” 
 
 Additional reporting by Philip Messing and Jennifer Bain
– A drunk 18-year-old urinated on an 11-year-old girl's leg on a JetBlue flight Wednesday ... and it turns out that drunk 18-year-old is a member of the US Ski Team. Robert "Sandy" Vietze was removed from the team's developmental roster yesterday in the wake of the incident, and the New York Post speculates he may have lost his shot at the 2014 Winter Games. Vietze was on his way back to New York from an Oregon training camp when had had a bit too much to drink (eight alcoholic beverages, to be exact), stumbled a few rows forward from his seat, and mistook the girl's leg for the urinal. Flight attendants separated Vietze and the girl's furious father. "I woke up to this man yelling and literally looking like he was about to punch this kid in the face," a fellow passenger tells the Post. Police took the teen into custody after the plane landed in New York; he was issued a federal summons for indecent exposure and released. Federal prosecutors decided not to pursue the matter and dropped the case, CBS reports. "I was drunk, and I did not realize I was pissing on her leg," Vietze told police. The Post notes that he has not apologized to the girl.