Hawker Cygnet replica, G-EBJI
The aircraft’s propeller detached in flight but the pilot was able to execute a successful forced-landing at Old Warden Aerodrome. The cause of the propeller detachment was determined to be fatigue cracking of the engine’s crankshaft, originating from a machined keyway feature that had previously been identified, by the engine manufacturer, as a site for fatigue crack initiation. The Light Aircraft Association (LAA) will update its guidance material for LAA Inspectors in relation to this problem and will also define a suitable non-destructive test and inspection interval for similar in-service engines.
Hawker Cygnet replica G-EBJI 10-12.pdf (2,521.27 kb)
Date of occurrence: 16 April 2012