WASHINGTON — More than seven years after an airline captain saved 155 lives by ditching his crippled airliner in the Hudson River, now the basis of a new movie, most safety recommendations stemming from the accident haven’t been carried out.

Of the 35 recommendations made by the National Transportation Safety Board in response to the incident involving US Airways Flight 1549, only six have been successfully completed, according to a review of board records. Fourteen of the recommendations issued to the Federal Aviation Administration and its European counterpart, EASA, are marked by the NTSB as “closed-unacceptable.” One has been withdrawn, and the rest remain unresolved.

The movie “Sully,” which recently opened in theaters, celebrates how veteran pilot Chesley “Sully” Sullenberger, played by Tom Hanks, along with his co-pilot, flight attendants, air traffic controllers, ferry boat operators and first responders did their jobs with professionalism and competence, averting a potential tragedy. The plane lost thrust in both engines that day in January 2009 after colliding with a flock of Canada geese shortly after takeoff from LaGuardia Airport in New York. No one died; five people were seriously injured.

“The FAA was very upset back then that we made any recommendations at all,” recalled Tom Haueter, who was the NTSB’s head of major accident investigations at the time. “They thought this was a success story.”

To investigators, the event turned up problems. “This could happen again and we want to make sure that if it does, there are some better safety measures in place,” Haueter said.

Recommendations that got an “unacceptable” response deal with pilot training, directions for pilots facing the loss of power in both engines, equipping planes with life rafts and vests, and making it easier for passengers to use them, among other issues.

It was sheer chance that the “Miracle on the Hudson” plane, an Airbus A320, was equipped with rafts, life vests and seat cushions that can be used for flotation. The equipment is only required on “extended overwater” flights, and not on Flight 1549’s New York to Charlotte, N.C., route.

The NTSB recommended requiring life vests and flotation cushions on all planes, regardless of the route. But the FAA responded that it was leaving that up to the airlines.

The board recommended that all passenger safety briefings by flight attendants include life-vest demonstrations, and that vest storage be redesigned for easier retrieval. Demonstrations are only required on extended overwater flights, although many airlines include them on all flights.

The board’s investigation found that only 10 passengers retrieved their life vests and not all of them put them on correctly.

Because Flight 1549’s descent was faster than the plane is designed to handle for a ditching, the underside of the aircraft was damaged when it hit the water. The two rear slides-rafts were submerged and unusable. That left only the two forward life rafts, which are designed to hold a maximum of 110 people — short of the 155 on board. Many of the passengers wound up standing on the wings as the plane gradually sank.

The NTSB recommended changing the location of rafts and slides. The FAA rejected that, saying that if Sullenberger had followed Airbus’ directions on descent speeds for ditching, the rear rafts would have been usable.

After Flight 1549’s engines quit, first officer Jeff Skiles began going through a checklist of procedures for restarting the engines, as trained, but was only able to get through a fraction of the items before the plane landed in the river.

The NTSB’s investigation showed the procedures were designed for a dual-engine failure at a cruising altitude above 20,000 feet, high enough for pilots to complete the list while descending and still have time to regain altitude. But Flight 1549 collided with the geese at only 2,818 feet. Among NTSB’s closed-unacceptable recommendations are that the FAA require airlines to include procedures for a low-altitude, dual-engine failure in checklists and pilot training.