According to an SIA spokesman, the Airbus A330-300, which had
been undergoing a routine landing gear system
check, was at a gate at around 8am when the incident
happened.
"There were no passengers or crew on board at the time. One
engineer who was on the aircraft was not injured," added the
spokesman.
"Singapore Airlines will be cooperating fully with the authorities
in their investigations."
The plane had been due to operate flight SQ890, which was scheduled
to depart for Hong Kong from Changi Airport's Terminal 3, at
7.35am, following its arrival from Shanghai's Pudong International
Airport after midnight on the same day.
Another aircraft was used for the flight instead.
According to records, the collapsed plane had been in service for
more than six years. Its maiden flight was in April 2009.
It is understood that damages to the plane are unknown at this
point. An assessment will be carried out once it has been removed
from the gate.