Airline Warned of Runway Glitch Before Buffalo Crash

Add this to the mix in the Buffalo plane crash: Southwest Airlines warned its pilots just weeks ago about a landing glitch involving the same runway the Continental flight was destined for, CNN reports. It seems an earthen dam near the runway interferes with signals in a so-called instruments landing, used during low visibility. The glitch could cause a plane's nose to pitch upward, generally consistent with the Buffalo circumstances.

The FAA and the NTSB both say they are aware of the warning—Southwest called it a "potentially significant hazard"—but aren't commenting further. Investigators of late have been leaning toward pilot error—perhaps an overcorrection to the plane's moves while on autopilot, notes the New York Times.
(More Flight 3407 stories.)