HECKLINGTON | Aircraft from the XtremeAir XA-41/Sbach 300 and XA-42/Sbach 342 family have been banned from aerobatic manoeuvres by the aircraft’s manufacturer.
XtremeAir GmbH placed restrictions on the highly advanced aerobatic aircraft family in a Service Bulletin on Monday 23rd September, which said both the left and right hand diagonal struts of the engine mount had been found to have separated during a routine inspection of an XA-42. The bulletin bans all aerobatic manoeuvres with immediate effect and requires a placard reading “AEROBATIC MANOEUVRES PROHIBITED” to be placed in the cockpit, in view of the pilot.
The manufacturer also says a ten-minute visual inspection of the engine mount must be completed before each flight. This inspection was previously required only once every ten aerobatic flights.
EASA published an Emergency Airworthy Directive the following day, which said cracks had been found on the engine mount, which “could lead to in-flight detachment of the engine, possibly resulting in loss of control of the aeroplane”.
The XA-41 and XA-42 are popular with airshow and competition aerobatic pilots, and are also used by aerobatic teams including Team Xtreme from South Africa, the Flying Bulls of the Czech Republic and the UK’s Matadors Aerobatic Team.
The aircraft had already been under the spotlight after cracks were detected in the engine mount during a separate inspection last year.