Pilot Error May Have Contributed To Endeavor Air CRJ-900 Crash

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41

Thankyou.

I take the difference as sensitivity.

Pilot should know how much to change pitch and risk of making sink rate high.

Still a conventional wing (not a delta).

(Early in Boeing 737 operations one overran runway in India, because former DC-6 pilot rotated too much so airplane took a long time to touch down.

Pacific Western initially ensured firm touchdown, then developed/taught a smoother arrival as some pax got nervous, B737-200 with F40 doesn’t need much flare.

42

It wasn’t the pilot’s fault. It was the asphalt…

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43

Amount of flair needed depends to at least some degree on height of wing above landing surface.
I have to read course material on that, drag may change as well.
CRJ and B737 are low to surface.
(As are DC-9 and derivatives.
Wings also vary in leading edge flaps/slats, DC9-10 did not have any which contributed to an over-run, I forget details.)

44

I never get tired of saying I told you so.

46

Yep. And if the aircraft wasn’t in a steady bank to the right, but was still rolling that would create some amount of additional force on the right landing gear and then the wing.

47

Questions include:

  • was PM not noticing sink rate increasing? CVR was recovered, was it readable?
  • was there another change of wind at the last moment, of direction (think swirling wind). I wonder if there would be a difference between left and right pitot-static systems which I expect fed different sets of instruments.
48

Some considerations:
Under normal circumstances the FO should have been proficient in the airplane at 400 plus hours. The unknown factors are:
How much hands on flying had she done.
Were most of the Captains she had flown with good instructors/mentors or were they not very proficient in the airplane.
Some facts about wing loading:
CRJ 900 Gross weight 80,500
wing loading 50# sq ft
DC9-30 GW 108,000#
wing loading 108,000 # sq ft
King Air 200 wing loading 41.3 # sq ft
P 51 wing loading 41.2 # sq ft
Beech Baron 58 27.6
CJ One 22.3
With good instruction/mentoring an average pilot can transition from a cabin class piston twin to a DC9 and be reasonably proficient in 100 hours. By reasonably proficient I mean capable of making a minimums approach and landing safely should the Capt become incapasitated

49

Correct DC9 wing loading to 108# sq ft. Some 30 series are considerably higher.
114,000 # Gross Weight on same wing as earlier 30 series.

50

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