The second C919 to be delivered to China Eastern soon.
Temporary registration number: B-001K
What's the reason to paint 008 in COMAC livery if it is due "to be delivered to China Eastern soon"?!
I believe these 2 May 5th flights are C919's first test flights since February 1st, 2023 when the left engine reverse thrust malfunctioned.
fr24.com shows that there were not less than 10 flights of the B-919A since then (on 2, 21, 27 Feb and ferry flight from SHA to PVG on 23 Mar) as well as more than 50 (!) flights of all six prototypes (B-001A - 1 flight on 22 Feb, B-001C - 3 flights on 3 Mar and 24, 25 Apr, B-001D - 6 flights in April, B-001E - 7 flights since 17 Feb through 5 May, B-001F - 18 flights in Feb and Mar, B-001G - 16 flights in Feb, Mar and April)