FIA issue strict flexi-wing action with Chinese GP TD:
https://www.planetf1.com/news/fia-set-to-take-further-flexi-wing-action-at-chinese-grand-prix
"... Ahead of last weekend’s season-opening Australian Grand Prix, meanwhile, teams were informed of an update to Technical Directive TD034, instructing them to install a rear-facing housing to accommodate a camera for the FIA to monitor rear wing deflection in Friday’s practice sessions at Albert Park.
All cars were found to comply with the deflection limits in Australia.
However, the FIA has found ‘sufficient grounds’ for a ‘tougher test’ to be introduced at the second race of the season in China with a focus on the upper rear wing. ...
“Having analysed footage from the rear wing deformations combined to the static deflections measured inside the FIA garage in Melbourne, the FIA has concluded that sufficient grounds exist for a tougher test to be introduced from the forthcoming Chinese Grand Prix on the upper rear wing.
“More specifically, Article 3.15.17, introduced in 2025, states that if 75Kg of vertical load is applied on either extremity of the rear wing mainplane, the distance between the mainplane and the flap (also known as “slot gap”) must not vary by more than 2mm.
“From the forthcoming Grand Prix in Shanghai, this limit will be reduced to 0.5mm. Due to the short notice for Shanghai only a tolerance of 0.25mm will be added to this new limit.
“The Teams were informed of this revised test early Monday 17th of March.
“The FIA wishes to further confirm that during the Melbourne event all cars tested against the requirements of Article 3.15.17 and found to comply, therefore all cars raced in Melbourne were deemed to be legal.”"