New Yorkers should consider holding their collective breath Friday morning as the city waits to see if space shuttle Enterprise completes its twice-delayed journey. This time around, it won’t be rain but strong winds that could force another cancellation.

Enterprise, the very first shuttle in NASA’s fleet, is set to ride piggyback on a Boeing 747 for what is projected as a five-borough flyover before touching down at JFK Airport. The flight is tentatively scheduled for some time between 9:30 a.m. and 11:30 a.m., with real-time updates on the itinerary to be posted here.

Skies should be clear early Friday, and rain isn’t in the forecast. Strong winds left in the wake of Thursday’s departing storm system could still spoil the spectacle. The airplane-shuttle combo has windspeed limit of 20 knots (23 mph) for flight, and Friday’s windy weather will push right around that level. Fortunately, the wind will be aligned almost exactly with a landing at JFK’s Runway 31L, with no crosswind threat.

Do you want to see a space shuttle in a low-altitude flight around the Big Apple? Of course you do. It’s all but certain to be a once-in-a-lifetime sight, and it might just be the most anticipated flight to the city since Charles Lindbergh’s first transatlantic trip 85 years ago. Here are some tips.

It’s important to note that there’s no official flyover route provided by NASA or the Intrepid Sea, Air and Space Museum in Manhattan, where the shuttle will eventually be on display.

The shuttle will enter city airspace from the south, and both the Statue of Liberty and the Intrepid are expected to be included in the tour of local landmarks. That means spectators with a view of the Hudson River or the harbor from Battery Park should have an excellent vantage point for the flyover.

The flight buffs at NYCAviation.com have posted a possible route map based on what the website describes as “an FAA flight itinerary.” Take a look. If that map is accurate, viewers in Coney Island, the Brooklyn Promenade, Staten Island and Flushing Meadows-Corona Park in Queens will be able to see the shuttle. Even spectators in some parts of New Jersey and Long Island might be in luck.

Just remember: there’s no sure thing on the route, and a turn in the weather before Friday morning could delay the flight for a third time.

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