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41,395 hour TBO

 
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jschauer



Joined: 19 May 2004
Posts: 89
Location: Justin, Texas

PostPosted: Wed May 07, 2008 18:38    Post subject: 41,395 hour TBO Reply with quote

World Record CF6 Engine Removed
From Power Plant Engineering: The world record breaking high time CF6 engine was removed from aircraft 393 at
DFW, hangar 5 on Wednesday, 30 April. The engine (S/N 690-375) was delivered new on B767-300 aircraft 393
back in May of 1998 and had accumulated 41,395 hours, 6,503 cycles and had never been removed. Bob Reding was
on site to recognize all those involved in helping to achieve this very significant milestone. Representatives from GE
Aircraft Engines presented Mr. Reding and American Airlines with a statue and plaque commemorating this new
world record. The engine will be returned to TUL for overhaul.

(from American Airlines Maintenance newsletter)
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rwahlgren



Joined: 15 Aug 2003
Posts: 139

PostPosted: Fri May 09, 2008 21:09    Post subject: Reply with quote

Just some trivia, According to my favorite site for Jet engine data.
A CF6-6D

Has a fuel flow of 1.736 kg/s at Take off and that is a throttle setting of
100%.

Using the trusty HP calculator with the conversion button.
1.736 kg is 3.8272248 lbs
and doing the rest of the calculations I arrive at
34.019 gallons per minute and 2,041.18 gallons per hour.
So what does a jet cruise at?? I don't know so a wild guess with takeoffs, cruise, idle, taxi, climbout etc. Lets say 50%. So that would be 1,020.59
times 41,395 hours, and that is a measly 42,247,323.05 gallons of fuel.
And that is one JET engine.

Now another wild guess an R-4360 putting out 2500 hp in cruise
and with a BSFC of .4 I get about 153.84 gallons per hour.
Now if the airlines really cared about fuel economy they would ask for prt diesel engines that could burn jet fuel and could probably dip below the .3
BSFC figure. The big marine diesels are way down there, and in the 50% or so effciency range.
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jschauer



Joined: 19 May 2004
Posts: 89
Location: Justin, Texas

PostPosted: Sat May 10, 2008 16:53    Post subject: Reply with quote

Ah, but props aren't glamorous. Can you imagine a Hollywood star arriving in a diesel? Smile
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