The International Air Transport Association (IATA) is urging regulators and slot coordinators to recognize the Covid-19 outbreak as an exceptional circumstance and put in place measures to ensure airlines do not lose their historic slots for services to and from China. “We do not want an airline to fly just to preserve its slots; this is not the point of the slot rules. The worldwide slot guidelines and the EU slot regulation 95/93 recognize reasons-force majeure events outside the air carrier’s control or extraordinary circumstances-for a justified non-use of slots. The Civil Aviation Administration of China (CAAC) granted a dispensation of 80/20, initially at Wuhan Tianhe International Airport and soon thereafter waved the “use it or lose it” slot rule at its other slot coordinated airports, including Beijing Capital International Airport, Beijing Daxing International Airport, Shanghai Pudong Airport, and Guangzhou Baiyun International Airport.
The European Commission has been “extremely helpful and has expanded the alleviation to slots for services to Hong Kong also,” Maughan noted. The airlines have to cancel any slots for which they are seeking alleviation and the slots can then be re-allocated for other flights, he added.
Collected and summarized from the source below by Tran Thi Tan https://www.ainonline.com/aviation-news/air-transport/2020-02-19/virus-outbreak-prompts-relaxation-80-20-slot-rule