There were three different types of resin used at various times during the manufacture of those tanks. Some last longer than others depending on which resin was used and it's reaction to unleaded fuels over time.
The best longterm solution is to get a qualified welder to copy one of the aluminium tanks already in Australia with the view of getting it authorised to suit the expected demand here. I did get a price from Diamond some years ago and was quite stunned. Agreed the 3000 hours is not a good measure but a lot of things have to be replaced at that time that seem to be in good condition. John. ----- Original Message ----- From: Rob Thompson To: [email protected] Sent: Saturday, November 13, 2010 5:41 PM Subject: [DOG mailing list] fibreglass fuel tanks There is going to be a fair few of the H36 fibreglass fuel tanks ending their life shortly... 3000 airframe hours is a quite odd way of determining the life of a glass tank......some aircraft could take fifty years with fuel sloshing around the tank to reach 3000 AF hours but others in a flying school for example could reach that milestone very quickly. Has anyone investigated the possibility of tank life being extended "on condition"? Rob
