An unbelievable mistake | Yeti Airlines flight 691

33 Comments

1. Nice to meet you Captain Magnar. Excellent analysis accident Yeti 691. I think ATR should review the checklist in BEFORE LANDING and add CL….AUTO POSITION.

2. It sounds like the PM messed up and the local inspectors are keeping that error quiet for now as a damage control measure.

   Sad. Perhaps the propeller controls could be moved elsewhere or have an audible warning that cannot be deactivated before the pilot acknowledges it in flight.

3. If it ain't Boeing then we are going.

4. This speaks of the Nepali 'devil may care' culture. I have flown many times on Yeti airways into Pokhara, and with a heavy heart, I will say that I am not surprised. Having said that, the choice is either a 30 minute risky fight to Pokhara from Kathmandu, or a 4 hour death-defining drive by road: I'll always choose the former..

5. Very sad 😭

6. I've got thousands of hours in an ATR. I've never seen anyone do this. I'm saying they couldn't. But when you move any item in the cockpit you get the other pilot's agreement before it moves. I have a hard time thinking this would be unintentional.

7. Simple and straight up review of the report. Thank you.

8. sad

9. More unbelievable is that when they turned the power down they didn't hear the engines going down and also incredible that a million machine has no alarm of "engine power zeroooo"

10. Fuel and oil mix are 50/50, 15 down flap, full power, auto pilot off, take off, flaps up 0, climb to 45.000 feet, auto pilot on yes 1 no 0

11. Fuel and oil mix are 50/50, 15 down flap, full power, auto pilot off, take off yes 1 no 0

12. Thank you very much for your insight Captain

13. The pilot flying also put a lot of faith in the instructor pilot.

14. This mistake is clearly too easy to make in this plane and as such needs to be addressed in the instrumental and controls immediately. This also leave a lot of room for a possible Suicide Pilot.

15. In Nepal they blame the dead for all air-plane accidents..

16. Unfortunately the female instructor pilot (who feathered the prop instead of setting flaps) and her husband (who also also killed in another crash) ended up killing so many people 😥

    The ONLY explanations are bad training and/or unsuitable candidate (who should never have been a pilot in the first place).

17. All I heard I think Overconfident make this happen coz warning sound alert ignore by captean and think he can handle it front of lady pilot

18. Hello. This is first time I have watched one of your videos. I REALLY like your no nonsense style, engineering accuracy and quality of graphics. Regarding this tragic, inexplicable accident, the elephant in the room is a deliberate act. I guess we may never know.

19. Thanks Magnar

20. The role changing that occurred on the flight deck, I believe, contributed to the problem. The check airman moving to the right side still has muscle memory from the left seat. Muscle memory can help us or kill us.

21. A few things that people seem to be overlooking
    1) This flight was a checkride
    2) The PM was the check pilot
    3) Any pilot who cannot adjust to being in either the right or left seat doesn't belong in the cockpit of a commercial aircraft

    It is, frankly, baffling how this could have happened with one, let alone two, competent pilots in the cockpit who are certified to operate this aircraft.

22. Hand-eye coordination differences in men and women are documented. This is a very tragic situation

23. Unfathomable to me that any pilot could get these controls confused. What MIGHT be understandable is confusing the condition controls confused with the throttles, since both are black, prominent, dual controls with similar size and length of travel. Frankly, I'm surprised that this layout seems universal in dual turboprops, but that's neither here nor there in this context.

24. 👍👍👍

25. Thanks you Captain for the explanation. I guess muscle memory during high workload could be the reason.

26. Thank you for this perfect explanation to a layman. You have earned a subscription.👍👍

27. Sounds like a classic "brain fart" or "brain short circuit", the kind where we put our purse in the fridge or throw the sandwich in the bin and keep the wrapper we meant to throw away.

    This can be explained by the function of the primary and secondary motor cortex in the brain, which stores quite complex pre-planned limb movements. It is believed that the conciousness merely triggers one of those functions and leaves the aiming and execution to the primary motor and visual cortices.

    It makes sense to assume that different sensory inputs trigger different different motor functions. Thus, if the movement associated with "Flaps down" were mis-aimed and the hands touched the condition levers instead, their different feel would trigger the appropriate unlock template in the motor cortex by reflex.

    The conciousness would be unaware of the error, because all it would receive back is that the movement acutally executed, for want of a better word, "went as expected".

28. Excellent.

29. Magnar, thank you for sharing this. Sadly, this mishap appears to have been preventable.

    Consistent, up to date training saves lives.

30. Magnar, Thank you for this important update.

31. GREAT , BUT RATHER COMPLICATED VIDEO , AND A/C. COCKPIT PROCEDURES … NOT SURE , BUT I BELIEVE THIS BOILS DOWN TO : CAPT. WENT TO FULL PWR WITH FEATHERD PROPS ,AND , 30 FLAPS RESULTING IN A STALL … AS WITH YOU SIR , SEEMS ABSOLUTELY IMPOSSIBLE THEY COULD HAVE MADE THIS MISTAKE … I AM DOWNLOADING THIS EXCELENT VIDEO FOR FURTHER STUDY … THANK YOU. X OCEAN SUPPLY VESSEL CAPT. P. van ESS. U S M M. + U S. FAA. LIC. COMMERCIAL PILOT

32. Very sad indeed but the pm actions were very suspicious!!!!! I hope I'm wrong.

33. In short, as expected, pilots error 😢

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