The Barbed Latching system was developed to reduce the likelihood of cowlings separating from the airframe when the primary latches are incorrectly latched.
The secondary latching system sales speak for themselves when more than 60% of the UK market opted for this design over other systems. Please see AD Compliance for further details.
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The primary Latching system is a conceptual design exploiting all the advantages of the secondary latching above and achieving a primary latching function. Great interest has already been shown in this conceptual design which is being evaluated for feasibility studies.