A United Airlines Boeing 787-9 from Singapore to San Francisco has declared an emergency. The aircraft has squawked code 7700 whilst outbound from Singapore, and is currently returning.
United Airlines flight UA28 declared the emergency whilst to the east of Singapore on the outbound route to San Francisco (SFO).
United UA28 Singapore-San Francisco
Flight UA28 was on climb through flight level FL310 (31,000 feet) before it terminated the climb and made good a direct return to Singapore.
The nature of the emergency prompting the expedited return is not yet known.
Update 14:40 UTC
Flight UA28 is now passing through FL150 as it continues descent for its return to Singapore Changi Airport (SIN). The aircraft is maintaining the emergency squawk code 7700.
Weather for the flight’s return is visual meteorological conditions (VFR) with visibility 10 kilometres or more. RWY 20 is currently active for the arrival with light winds at 2kt.
Update 15:00 UTC
Flight UA28 is now under…
