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#21
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I've likely started
thousands of aircraft engines and NEVER had an engine fire on start I've started 8 engines at least 300 times (2400 starts) and I've only had 2 engine fires on start and one of them was a torch that the crew chief, in my opinion, over reacted to. BUFDRVR "Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips everyone on Bear Creek" |
#22
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![]() "WaltBJ" wrote in message m... Change the uniforms again? Jesus X Christ! What's wrong with these guys' brains? They get up to CoS and all of sudden they think - "Hey, it's time to change the uniform!" I forget the name of the jerk who "Hire somebody, fire somebody and paint the lobby." Was the advice I heard for taking an upper management job. Since the entire Air Force can't see you changed the color of the lobby they think they need to change the uniform to prove they're in charge. sigh professional managers sigh deep-sixed the trench coat - but I still have mine and I wear it when it gets cold here in CO. Very nifty coat, too. The only decent move these perfumed princes (thanks, Hack!) ever made in the uni bit was to go to wash and wears. But then I mostly wore flying suits anyway. The Nomex bag wasn't so bad after it had been through the washing machine a dozen or so times. A real sweat hog when brand new, though. I know the word for our Nomex racing suits was to never wash them: the fire proofing washed out. Was the fire proofing the thing that accounted for the "sweat hog" effect ya' think? BTW what is the uniform allowance now - still 2 bucks a month? Walt BJ |
#24
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#25
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"Gord Beaman" wrote
I'd love to have a bean counter to run this by. Just think of all the manpower hours wasted by this unproductive occupation!. It's like doing a complete teardown and rebuild of your car engine every six months at a cost of half of the engine's worth. Nothing short of ridiculous overkill. Talk to any Nascar or Professional drag racer about engine tear-downs. No matter what the bean-counter says, the winners run fresh engines, and they don't last 6 months even. You only have to look at the monthly inflight shutdown rate, and that number of hours is the right edge of the bell curve. |
#26
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"Gord Beaman" wrote
(BUFDRVR) wrote: I've likely started thousands of aircraft engines and NEVER had an engine fire on start I've started 8 engines at least 300 times (2400 starts) and I've only had 2 engine fires on start and one of them was a torch that the crew chief, in my opinion, over reacted to. BUFDRVR Sure...and just about anyone who starts a/c engines can say the same...fireguards are a waste of time... We had a DC-3 burn-up on start in Pleiku once. Course that was a gasoline fire. It was full of body bags going to Saigon. What a mess. Digging latrines was good duty that week. That was a month before the Cathay Pacific airliner blew-up over Pleiku at 29k ft. We had raining body parts on that deal. |
#27
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Sure...and just about anyone who starts a/c engines can say the
same...fireguards are a waste of time... I think it depends on the aircraft. Despite the extremely rare occurances, I actually believe they serve a purpose during a BUFF engine start, at least for #4 (the first engine started). In the BUFF, we have no APU and rely on an AGE cart for starting #4 and # 5 engine. The carts are old (imagine that) and generally not designed to spin your engines any higher than about 25% RPM, so basically, until you have #4 on line, you have limited ability to motor out a fire, which obviously increases your probability of needing fire retardant and a fire guard. BUFDRVR "Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips everyone on Bear Creek" |
#28
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![]() BUFDRVR wrote: Sure...and just about anyone who starts a/c engines can say the same...fireguards are a waste of time... I think it depends on the aircraft. Despite the extremely rare occurances, I actually believe they serve a purpose during a BUFF engine start, at least for #4 (the first engine started). In the BUFF, we have no APU and rely on an AGE cart for starting #4 and # 5 engine. The carts are old (imagine that) and generally not designed to spin your engines any higher than about 25% RPM, so basically, until you have #4 on line, you have limited ability to motor out a fire, which obviously increases your probability of needing fire retardant and a fire guard. BUFDRVR "Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips everyone on Bear Creek" Why do you start #4 & #5 first? Do they have more electrical/hydraulic capacity? Given the age of those engines, I would want to start #1 & #8 first, in case they blow up! ( The above includes both an honest question and a non serious smartass comment.) Bob McKellar, who only had to start #1 on his own airplane long ago |
#29
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Why do you start #4 & #5 first?
The sequence is; #4 then #5, then the rest. You could use #3 or #6 to start as well, I'm guessing they just picked #4 because they needed to pick an inboard engine and #4 was the closest to the watchful eyes of the Aircraft Commander (I'm not really sure why they picked #4 out of the 4 they could have?) You want to use inboard engines because the bleed air manifold connecting to the outboard engines is only designed to have cooled air blown into it, not hot air out of it. Basically, if you start #8, then run up #8 to start the rest, you can over temp the "plumbing" leading from the #8 engine. Same is true for #1, #2 and #7. On occasions, the manifold for one of the outboard engines will stick open after the switch has been placed to CLOSED and either during the anti-ice check, or initial takeoff you'll get a manifold overheat light. The bad part is, you have no idea which engine and have to go through a little "trial and error" to figure out which engine is the criminal. On takeoff the light comes on immediately upon turning the air conditioning on (somewhere prior to 10,000'). BUFDRVR "Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips everyone on Bear Creek" |
#30
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From: "Gord Beaman" )
Date: 2/20/2004 7:35 PM Central Standard Time Message-id: (BUFDRVR) wrote: I've likely started thousands of aircraft engines and NEVER had an engine fire on start I've started 8 engines at least 300 times (2400 starts) and I've only had 2 engine fires on start and one of them was a torch that the crew chief, in my opinion, over reacted to. BUFDRVR Sure...and just about anyone who starts a/c engines can say the same...fireguards are a waste of time... -- -Gord. On the other hand when an F-4E burns on engine start having a fire guard comes in very handy getting the aircrew out safely. In the 2 years I was at Hahn AB it happened only once as far as I recall. It justified the expense as far as I am concerned. It was the only case of one of my aircraft in 20 years. It's a small price to pay. Dan, U.S. Air Force, retired |
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