it looks like the radical should be 40 宀 such as 觀(U+89C0).

I wish to echo the point made by Ken Lunde elsewhere regarding this particular evidence:
"The evidence image, which is simply a code chart excerpt, is insufficient. While the link to the CNS 11643 website is better, it also is insufficient. A dictionary entry or book excerpt that explains its meaning or shows the ideograph in context is desirable."

Add 40.0 宀 as the second radical?

For U+89C0 觀, the semantic element is 見, so the it’s the best to use 見 as the radical. However, the reading for 04292 provided by TCA is ān that means 安, the right part is the phonetic element. It’s better to keep the current RS without any change for the second radical.

IRGN2486 (TCA's submission for WS2021) indicates that the evidence image is from the household service database, from which the name on each person's ID card is printed. It is not simply a code chart; it is an official government document with legal effect. For further explanation, please see IRGN2546.