Hong Leong Investment Bank’s (HLIB) researc arm is maintaining its “sell” calls on both AirAsia Group Bhd and Malaysia Airports Holdings Bhd (MAHB). PETALING JAYA: It’s not yet light at the end of the tunnel for the aviation sector as it continues to undergo turbulence amid closed country borders and social distance measures. “We expect a prolonged impact of Covid-19, especially on international travel, affecting the profits and margins of the sector, ” Hong Leong Investment Bank’s (HLIB) research arm told clients in a report yesterday. It said based on current developments, it expected domestic travel within Asean countries to remain suppressed until end of 2021 and only gradually recover by mid-2022 with international borders opening up at the same time.