I found this seat plan for OGV with 221 economy [undated]:
https://www.qantas.com.au/infodetail...63-30J217Y.pdf
However, The QF source notes:
29/06/2006 - Re-entered service for QANTAS as QF189 Sydney - Auckland in Australian Airlines livery.
23/08/2006 - Unveiled at Beijing in QANTAS livery. Reconfigured to 30J/224Y.
So it is a mystery about a 15 year old aircraft remaining in the desert.