Correct. I read quickly. It was at 14,000 which is within a stinger's range. The engines on a 747 are on the wing. If a Stinger hit an engine/wing are you saying it couldn't cause the fully loaded fuel tanks to explode?
If you remember, there was an A300B4F that was hit over Baghdad by an SA-7 (basically the Russian version of the Stinger) and it didn't go boom. It lost an engine and suffered damage to the wing but it managed to land.
The aircraft may have been flying at 14,000 feet, and it may have been within the range of a Stinger anti-aircraft missile . . . but that means absolutely nothing.
What's more important is that an eastbound flight out of JFK would not have been flying at 14,000 feet under normal circumstances. It would usually be at 16,000-17,000 feet at that point in its eastbound flight, but Flight 800 was ordered to level off at around 14,000 feet to make way for a northbound US Air flight into Providence, Rhode Island that was behind schedule that night. A terrorist on the ground/water below could not possibly have foreseen this, which is why he would clearly have attempted such an attack from a point much further west where aircraft flying overhead would usually be much lower than they are at the point where Flight 800 went down.