Re: Delta Flt 1288

From: (Mike Neus)
Organization: Texas Instruments
Date:         29 Jul 96 02:29:38 
References:   1 2
Followups:    1
Next article
View raw article
  or MIME structure

In article <airliners.1996.1266@ohare.Chicago.COM>,
>Karl says:
>>There were some Stage III 727 proposals that involved replacing the
>>#1 and #3 engines (with RR Tays, I think) while leaving the JT8D in
>>the #2 position so as to avoid the significant expense of modifying
>>the S-duct or its intake, but to my knowledge it's not been done.
>>I'd be very surprised to see any airline willing to operate a type
>>with two different engines on the same airframe.  The maintenance
>>folks would be incredibly irritated by such a monster!
>This mod was offered by Valsan.  It involved replacing the two outboard
>engines with JT8D-200 series and hushkitting the center engine.  The
>thrust reverser was eliminated from the center engine in the process.
>Several of these mods were sold.  Delta may have been a customer.  It
>really improved performance.  Valsan has since gotten out of this business
>by selling it to someone else (sorry, can't remember who).  Since many
>airlines operate both 727s and MD-8X, the engine mix might not have been
>too difficult to deal with.

Hmmm, that brings up another interesting point.  Arn't the center engines on
DC-10/MD11 and LT-1011 aircraft different from the under wing engines?  Ya,
all three are probably made by the same company, but are they different none
the less?