They're focusing on a piece in the tail called the jackscrew, which is suspected in the crash of Alaska Airlines Flight 261 on January 31. ❋ Unknown (2000)
In that case, a mechanism known as a jackscrew failed because of shoddy maintenance, causing the plane to become uncontrollable. ❋ Unknown (2008)
There have been some reports that there may have been common problems with something called a jackscrew, some different types of bolts have been problematic. ❋ Unknown (2000)
The stabilizer is operated by a component called the jackscrew, which consists of a nut that rides up and down a screw as it turns to raise and lower the stabilizer. ❋ Unknown (2010)
We can give you a little look at what the jackscrew is. ❋ Unknown (2000)
This follows the discovery earlier this week in two Alaska Airlines jets of metal strips and filings in the jackscrew assemblies, a part of the horizontal stabilizer. ❋ Unknown (2000)
Metallurgists were sent out from Washington to take a look at that jackscrew, because it did have some metal strips and metal filings around it. ❋ Unknown (2000)
LEE DICKINSON, FORMER NTSB OFFICIAL: I think the prudent thing for them to do is to examine both the gimbal nut and the jackscrew and look at both of those from both those airplanes and compare that with what we know or what the safety board will be finding from the accident aircraft. ❋ Unknown (2000)
We are now told by officials from the National Transportation Safety Board that Alaska Airlines has completed its inspection of its 34 aircraft, but in the process, two aircraft were found to have metal filings or shavings in and around the jackscrew. ❋ Unknown (2000)
But in at least several of the cases that we know of, they have found metal filings in and around that jackscrew assembly and metal powder-like that had worn off of it. ❋ Unknown (2000)
But we are told by the safety board, at the present time, they don't know if the damage is pre-impact or post-impact, in other words, caused by hitting the water, but they do know that the material that was wrapped around that jackscrew in those places is from the nut. ❋ Unknown (2000)
Since last Thursday, some 21 planes have been found to have irregularities in the jackscrew or other parts of the tail section. ❋ Unknown (2000)
CARL ROCHELLE, CNN CORRESPONDENT: Donna, operators of the of the MD-80 series jetliners were told to run inspections on that jackscrew that they though may have been a problem. ❋ Unknown (2000)
NTSB engineers say the nut, which works along with the jackscrew to control the stabilizer trim, had severe damage to its threads. ❋ Unknown (2000)
What we're focusing on right now, as you've indicated, is the jackscrew and that's the inspection that's taking place. ❋ Unknown (2000)
And Boeing last evening put out a recommendation with all of the airlines that operate these airlines, almost 2,000 worldwide, roughly 1,100 in the United States that they take a look at this jackscrew assembly and see if they can find any kind of damage in the area. ❋ Unknown (2000)
They found metal fibers, metal filaments wrapped in and around the jackscrew on one, and on another, where the horizontal stabilizer attaches to it, they actually found a piece of metal curling out of a nut in that area. ❋ Unknown (2000)
GARVEY: Well, first of all, that air worthiness directive, which was issued and given a 18-month period, focused on a different part of the horizontal stabilizer, not the jackscrew. ❋ Unknown (2000)
You can see, this is the jackscrew recovered from Alaska Airlines flight 261, the one that crashed, and you can see what looks like little wires sticking off the side. ❋ Unknown (2000)
We were [stuck in] that room for hours while that [jackscrew] went on and on about not one [fucking thing] that mattered. ❋ Flavius1965 (2014)
