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ASN Wikibase Occurrence # 166602
Last updated: 11 September 2020
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Date:18-MAY-2014
Time:12:06 LT
Type:Silhouette image of generic CP10 model; specific model in this crash may look slightly different
Mudry CAP 10B
Owner/operator:Nedre Romerike Flyklubb
Registration: LN-KAP
C/n / msn: 130
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Minor
Category:Serious incident
Location:Bjørkelangen -   Norway
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Private
Departure airport:
Destination airport:
Investigating agency: AIBN
Narrative:
During practicing of aerobatic manoeuvres northeast of Bjørkelangen, Akershus, the propeller came loose and disappeared. Prewarning: 5 sec. of miss-sound and a light vibration, followed by a "bang" and a light gust of smoke 5 sec. later. An emergency landing in an agricultural area was performed without any further damage. The investigation showed that three of the six propeller bolts were broken. The other three bolts were missing and had most likely unscrewed themselves. This indicates that the torque on the bolts was too low.
The propeller was installed in 2010.

Sources:

http://www.bea.aero/fr/enquetes/2014/2014.semaine.21.pdf
https://www.aibn.no/Aviation/Published-reports/2015-05-eng

Accident investigation:
cover
  
Investigating agency: AIBN
Status: Investigation completed
Duration:
Download report: Final report


Revision history:

Date/timeContributorUpdates
29-May-2014 13:03 Alpine Flight Added
17-Aug-2015 22:26 Aerossurance Updated [Phase, Source, Narrative]
11-Sep-2020 18:49 harro Updated [Operator, Narrative, Accident report, ]

Corrections or additions? ... Edit this accident description