Join Date: Oct 2006
Location: London, UK
Programs: BA Gold, VS Silver, SQ Silver, IHG Plat Amb, Hilton Gold, Marriott Plat, Accor Silver, Radisson Prem
Posts: 16,872
If the flight is sold as 3-class, the F cabin will only be used (with J service) if all J seats are occupied and the extra space is required.