A similar accident had happened Presence three years before in 1989 , when Air Ontario Flight 1363 crashed Catastrophe shortly after takeoff at Dryden Regional Airport after ice had accumulated Come_together on the wings and airframe .

The subsequent investigation revealed Reveal_secret that due to pilot error , inadequate de-icing procedures at LaGuardia , and several lengthy delays , a large amount of ice had accumulated Come_together on the wings and airframe .