Elvis Posted August 23, 2007 Report Share Posted August 23, 2007 Elvis - Thou has a very good memory sir. Not many folks remember that one and I guess you and I are two of those few. Saddest part to me was that it was an almost new a/c and a nice one too......but alas, she 'walked' off a large, newly constructed pad, down over the end and was no more. It didn't have to happen because I had cautioned the pilot only days before to be careful about that during a conversation. He said he found it hard to believe that about them, but he found out different two days later. Boosted T/R pedals on the older 206's used to do the same thing and make the a/c want to 'wander off' on occasion. Her's one to test Your memory Cap. Which came first the incident in Sept Illes, or destroying their other 205 ( C-FXRU) in Inuvik during a hot re-fuel when the fitting on the pump opened and turned it into a giant flame thrower? Quote Link to comment Share on other sites More sharing options...
cap Posted August 24, 2007 Report Share Posted August 24, 2007 Elvis------If memory serves me correctly, POA was #1 and XRU was #2. Quote Link to comment Share on other sites More sharing options...
Jammed left Posted August 24, 2007 Report Share Posted August 24, 2007 Cap...allow me to expand your knowledge base of incidents of Bell Mediums 'walking' off the pad. 1998..or was it 99 - Fort Liard NMH 205 goes for a walk off a mini staging helipad, ends up doing a 360, then falling backwards off the pad - all the while the pilot is running around the machine either trying to get back in, or trying to not get run over.. an exciting few minutes from what i've been told. Quote Link to comment Share on other sites More sharing options...
Slinger Posted August 28, 2007 Report Share Posted August 28, 2007 A few years back, we were building a power line in Sask. near La Ronge, and I was on a 206 pulling sock line, hanging insulators and doing tower landings, just having fun. We were hot refueling most times, because of the 3 min. idle rule, and on this particular day, my first refuel I got out and started the refueling process when I noticed fuel dripping from the engine compartment drain. I walked around the machine, and the fuel filter thats sits near the back of the engine compartment was weeping a very noticeable amount of fuel, and when I tried to hand tighten the bowl, it FU#king moved! Low and behold, the engineer had decided to start his 100hr, and must have replaced/cleaned the filter, and only finger tightened the bowl. Now, I,m not pointing fingers, because we all know sh#t happens, but my point here is if I had not been hot refueling, and the fuel system under pressure, I could very well have missed the leak, only to have the machine flame out when I was low, slow, and behind the curve. Like it has been stated previously, there is a time , and a place when it is appropriate, and I,m living proof. GWK Interesting, because I had a similar event happen to me with a 206. I had to go for a quick pi stop, so found a nice level landing spot and idle with friction. Step out beside the helicopter and did my thing, then I notice dripping from drain. It was the fuel drain that had sand in it and only under pressure will it come out. What it though me was I had to change the draining procedure to avoid it happening again. So leaving the engine running might be a good thing when you step out to Hot refuel or pi, but NOT when it's practical, do it when you don't have a choice! Mike Quote Link to comment Share on other sites More sharing options...
Freefall Posted August 28, 2007 Report Share Posted August 28, 2007 I was always told you arent supposed to drain the A/F fuel filter without boost pressure during your DI anyway so if fuel is going to leak out of it...it should do it without the engine running. Not that I have anything against hot fueling. Quote Link to comment Share on other sites More sharing options...
Helilog56 Posted August 28, 2007 Report Share Posted August 28, 2007 Not quite Freefall......heat saturation (expansion) and vibration can make a static inspection that looked okay change very quickly. Quote Link to comment Share on other sites More sharing options...
cap Posted August 29, 2007 Report Share Posted August 29, 2007 Jammed Left ------- Duly noted bud.I also know of many more, but saw no point in going further in that direction. It should also be mentioned that some of those same incidents happened to some very, very experienced Medium 'drivers' and many had done it many times before over decades without incident. It's not only a domain of those of less experience in total or on type. Quote Link to comment Share on other sites More sharing options...
Billy Hill Posted August 29, 2007 Report Share Posted August 29, 2007 Not quite Freefall......heat saturation (expansion) and vibration can make a static inspection that looked okay change very quickly. Thats what I love about this industry, you learn something new everyday! Quote Link to comment Share on other sites More sharing options...
Slinger Posted August 29, 2007 Report Share Posted August 29, 2007 I was always told you arent supposed to drain the A/F fuel filter without boost pressure during your DI anyway so if fuel is going to leak out of it...it should do it without the engine running. Not that I have anything against hot fueling. There seem to be two school of though, one would say don't turn on the boost pump because you would mix the water. And the other would say if you don't, the sand that might be there will not come out without pressure. So after my event, I drain by gravity first then use pressure the second time. That way I was sure, but if anyone know something new please share. Mike Quote Link to comment Share on other sites More sharing options...
skullcap Posted August 29, 2007 Report Share Posted August 29, 2007 Do not under any circumstances drain fuel with pumps off in a 206 or any allison, air will enter the system and could/will cause flame out. Astar is completely different system which bleeds the air out by running pump for 30 seconds(open cap to tank and ensure the fuel is infact trickling back to tank from enine).....yes in astars people go back and forth re pump on/off for drain but with fuel flowing thru the filter the contaminates will mostly by pushed into filter since the flow is thru the filter, thus drain as manual states with pump off. The reason is works in allison is that there is no flow thru filter and thus the flow is out the drain and out goes the crap. sc Quote Link to comment Share on other sites More sharing options...
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