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vibe

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vibe last won the day on July 3 2015

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  1. Using the CSA Standard, B836-05, as an industry best practice, drummed fuel should be tested 12 months after filling. If laboratory testing finds that the jet fuel meets specification you can store it for another 12 months. And so on and so on till you use the fuel. Chevron marks our drums with a 9 month expiry date. Bulk jet fuel at aerodromes should be tested every 6 months. The reduced shelf life is due to atmospheric venting vs sealed drums. 2 year or older fuel can certainly be used but you would want to know its good before filling an aircraft with it.
  2. I am far from being an expert on drum refueling but here are some of my opinions on fuel handling and drums usage; Your company should have a fuel handling manual that specifies how you will ensure that the fuel being used meets the type certificate requirements. Aviation fuel is tightly controlled during production and through the supply chain. Once delivered to the operator it is the operator’s responsibility to ensure that the standard of quality is maintained until dispensed into an aircraft. The Canadian Standards Association B836-05 is a recognized standard for fuel handling at aerodromes. Reuse of aviation drums is not recommended in B836-05. Your company manual should then provide an equivalent level of safety by controlling the process of reusing drums. (This covers your butt.) This doesnt prohibit the reuse of drums but controls it so that safety is maintained to a consistent standard. When reusing drums you must “know” the history of the drum, not just assume that it is clean and safe to use. For example a clean looking drum that has been laying around the job site may have been temporally used for other products that you wouldn’t want flowing through the FCU. Proper filtration can only do so much and no filtration system is perfect. Sealed drums of jet from a dealer may have water in them due to temperature changes. There is always dissolved water in jet fuel. This is an inherent property of jet fuel. As the temperature of the jet fuel drops the fuel can change from clear to cloudy and if the temperature continues to drop the water can condense out of the fuel and drop to the bottom of the sealed drum as free water. (This can also occur in an aircraft tank either on the ground or at altitude.) Drummed fuel from any source has to be inspected prior to use. As the end user of the fuel the pilot must be confident that the fuel in the aircraft is correct and safe. Reuse drums as required but be clear on who accepts the fuel and the liability. John
  3. Long time reader/ seldom poster here. Haven't read the AD or worked on the type but I think you are headed down the wrong path here. If the AD requires the use of a visual aid (magnifying glass) a pilot cannot perform the inspection. As dumb as it sounds Transport has ruled that using a magnifying glass is beyond a pilots ability. (start jokes now) Standard 625, Appendix A, paragraph (29); Standard 625 APPENDIX A - ELEMENTARY WORK (29) repetitive visual inspections or operational checks (including inspections and tests required by airworthiness directives) not involving disassembly or the use of visual aids, performed out of phase with the aircraft’s scheduled check cycle at intervals of less than 100 hours air time, provided the tasks are also included in the most frequent scheduled maintenance check. The CARs make you comply with the AD but also restrict who can perform it, regardless of the wording in the foreign AD. Under the CARs the only maintenance that does not require a "Maintenance Release" is Elementary Maintenance. If the task specified in the AD does not fall into the definition of elementary it requires an Engineers release. This where the magnifying glass comes in. If you need a visual aid to determine the sevicabilty of the aircraft you need an Engineer to release the work. You need an AMOC to allow pilots to comply with this AD. Just my 2 cent interpretation. Don't want to see anybody get screwed during these tough times. I guess pilots never played with magnifying glasses as kids. I wonder what they did play with.
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