Air India AI 171 Crash in Ahmedabad (9 Viewers)

[shiphone]

it seems you are quite young or too young?
no need for more discussion (from me) but for the final report...TBO, the fact seems to be very clear already.

 

[Bhartiya Sainik]

it seems you are quite young or too young?

I don't pass personal comments, slangs bcoz i'm IT engineer in 40s, also religious minded.
In my profile itself i've mentioned humbly 'low IQ', 'mid-aged' & profile pic is of iconic EMC2 Symmetrix VMAX storage, the best one at its time. 'Too young' people don't know this.
Now i wonder if this is someone's Eye problem or IQ problem or both.

no need for more discussion (from me) but for the final report...TBO, the fact seems to be very clear already.

You are still most welcome to discuss neutrally, politely, with publicly verifiable stuff, that's what brings gavity, credibility, trust.
Mary Schiavo exposed that out of all pilot blaming cases, 75-80% were tech issues.
+ Boeing whistle blowers.
I'm still considering all angles being a techie.

 

[Psacha123]

View: https://x.com/shivaroor/status/1946404273224348129?s=46

 

[Bhartiya Sainik]

View: https://x.com/CaptShaktiLumba/status/1944397999750406329

Theoretically, TCB can also have electronic/electrical issues.

This aspect i mentioned in my last post that there are layers -
- mechanical switch layer
- electronic circuit layer below
- connectors & wiring layer
- S/w layer

> EEC's TCMA function shut down engines (fuel valves) of ANA 787 just before landing. This doesn't move guarded fuel switch.
> Load-relief function can operate flaps. This doesn't move notched flaps lever.
> Electrical Management's Load shedding function can deprioritise & auto-shut some fuel pumps, hydraullic pumps, etc under certain conditions. IDK yet if this will turn hydraulic, AC-pack knobs, etc in overhead panel.

So apart from S/w layer glitch,
the electronic circuit, connector, wiring layers can also have glitch, or maintenance issues.

Earlier, there was STAB POS XDCR message for Stabillier Position Transducer, which was troubleshooted.
STAB trim switch is in control column & thumb operated,
but red color guarded toggle switch for STAB on-cutoff are beside the fuel switches.



So where exactly was the issue?
- Transducer
- wiring
- connector
- switch
- something in TCB box?
From the message it appears that the Transducer is faulty, but a bad connector or wiring on either end MIGHT also produce this error.
An Electronics &/or Electrical engineer can tell best.

What exactly was troubleshooted?
Was something replaced like Stab Transducer, connector, wiring, Stab trim switch, stab on-off switch beside the fuel switches?

These 2 switches of Stab & fuel clearly seen to be 2 units with fixing screws. But still, can there be a short circuit in TCB box in or around Stab on-off switch, which also affected the Fuel switches?