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Plainplane
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Joined: Thu Mar 27, 2008 7:50 pm

Question - Changing Engine Types On Aircraft

Sun Dec 19, 2010 6:31 am

I'm wondering what would go into (if this was feasible) changing the type of engine an aircraft uses, for example replacing the PW engines on a 747 with GE engines, or replacing the RR engines on an A380 with EA engines. Has such type of modification been done with aircraft in this way?

(I'm not meaning engine replacements in terms of aircraft modernization such as on KC-135s replacing the JT8Ds with the CFM 56 but for replacing an already certified engine configuration in common use with another certified engine configuration in common use.)
 
tdscanuck
Posts: 8572
Joined: Wed Jan 11, 2006 7:25 am

RE: Question - Changing Engine Types On Aircraft

Sun Dec 19, 2010 7:12 am

Quoting Plainplane (Thread starter):

I'm wondering what would go into (if this was feasible) changing the type of engine an aircraft uses, for example replacing the PW engines on a 747 with GE engines, or replacing the RR engines on an A380 with EA engines.

Replace the strut & nacelle. Run new wiring from the engine to the flight deck. Replace the fire extinguishing system. Replace the display and FMC software. Replace all manuals. In some cases, replumb the fuel system and replace the thrust lever resolvers.

Quoting Plainplane (Thread starter):
Has such type of modification been done with aircraft in this way?

Yes. The first 777-200 began life with Pratt&Whitney engines:

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Photo © George Canciani



It was later re-engined with Rolls Royce powerplants and sold to Cathay Pacific:

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Photo © Steven Shi



Tom.
 
Viscount724
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Joined: Thu Oct 12, 2006 7:32 pm

RE: Question - Changing Engine Types On Aircraft

Mon Dec 20, 2010 2:22 am

A very few 747s (only 2 or 3 I believe) have also been re-engined from P&W to GE. Here is one with original P&W engines with its first two operators...


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Photo © Udo K. Haafke
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Photo © Marc Lehmann



...and same aircraft with its final operator, both before and after re-engining.


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Photo © Normando Carvalho Jr.
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Photo © Jordi Steeno



It was written off in a landing overrun at DUS in 2005.


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Photo © EDDL Photography

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