Kojak, In this connection the following Bell OSN maaybe relevant. A coincidence that its dated just a few days before the incident.
OSN 412-10-37 dated 06 May 2010
TO:
All Owners/Operators of Bell 412 series Helicopters
SUBJECT:
HIGH LANDING GEAR AFT CROSSTUBE P/N 412-321-104
Bell Helicopter has recently investigated a failed high aft crosstube. The investigation revealed the failure occurred in the inspection window after accomplishment of the AAI Alert Service Bulletin AA-07109 (ref. BHT Cover
ASB 412-08-129). Further analysis revealed the primer used was not in accordance with the specified primer of the Alert Service Bulletin. Use of primer other than that specified in the Alert Service Bulletin may negatively impact the visual inspection process by masking underlying cracks on the surface of the crosstube.
This OSN is issued to remind customers to only use the primer indicated in the AAI Alert Service Bulletin AA-07109 (ref. BHT Cover ASB 412-08-129). Use of alternate primer can significantly diminish the ability to detect cracks.