Guardian - Struggling To Parse Three Answers

[JJ109]

14a). 21 (21d = fliers)against installing electronic warning light (6) _ E _ C _ N
I assume the answer is BEACON. I can see BEE + CON..... but
4d). Musical's essential elemenr (7) S _ L _ C _ N
I assume SILICON, but.......

This next one is a "themed" answer and the "X" in the answer is undefined and is not part of the parsing.
5a). One article carried by climbers primarily? (3,3) _ C _ / A _ E
I assume Ice Axe, but.....

Many thanks

[scorpiojo]

(Mu)Si (cal)

[JJ109]

Of course, Thanks Jo!

[scorpiojo]

Best I can do is bee sounds like bea..+ con (against)...

[geeker]

(B(E)A)Con
E inside British Airways (fliers) + Con

[scorpiojo]

I = 1, c(climbers, prinarily), + a = article, exe = x (lacks something crucial in one form or another.)

[scorpiojo]

^ Ignore my bee rubbish :-)

[JJ109]

Thanks again Jo, but I think Geeker has it! Thanks Geeker!

[scorpiojo]

*primarily)

[geeker]

I+[AX(article+theme) inside CEE (C spelled out)] gives Ice Axe and seems plausible

[scorpiojo]

..and much better than my attempt...again :-))

[JJ109]

Very many thanks to both of you, I hate it when I know the answer is correct but I can't parse it. All finished now, thanks again

[plutocrat]

Good post! I was stuck parsing exactly the same three, although as you said, it seemed pretty obvious those were correct. Also wasn't sure about 21, so thanks for the reassurance there.

[AdeByrne]

i dont like silicon explanation. Like you I had the answer I can see it might be but how tenuous is that. It's not central and could be Carbon or Aluminium.

Ice axe I got too but I cannot get to an explanation I am happy with.

Happy with MOXA but seriously was I ever supposed to get that word!

[Mamyalynne]

Ice axe parsed here

https://www.theanswerbank.co.uk/Quizzes-and-Puzzles/Crosswords/Question1696028.html