<table><tr><th>From:</th><th>Larry Visoski</th></tr><tr><td>Sent:</td><td>Wednesday, February 1, 2017 3:50 AM</td></tr><tr><td>To:</td><td>Je vacation</td></tr><tr><td>Subject:</td><td>Fwd: 550 engines</td></tr></table>

Pete informs it appears Chevron's clea=ing service applies the sealant to the Cowl , doesn't seem like a big deal l=will gather more information / facts tomorrow from Kathleen and Gulfstream a=out this Cowl lip issue

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Begin forw=rded message:

- From: [redacted]  
- Date: January 31, 2017 at 9:15:57 PM EST  
- To: [redacted]  
- Subject: (blank)  
- Notes: Sender/recipient fields are blacked out/redacted in the image.

list-Code=920004/05 For <=iv>l some saw reason that too this RR on NTO airplane the 116 due has Xzilon a Cowl application I=p issue cowl every inlet 90 lip. days they have to apply this compound do you know what thi= is? See below

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Begin forwarded mes=age:

This is an email from Larry Visoski to Kathleen Goncalves on January 31, 2017 at 6:56:14 PM EST. The email subject is "550 engines".

Hi Kathleen
Serial 5173
Chevron N401H=
Pls keep private,. It's on RRCC
<=iv id="AppleMailSignature">

## We ar= interested in buying a G550

But t=e aircraft we are looking at has this issue can you explain what this is to=me in layman's terms? Is there a part shortage?

## We ar= interested in buying a G550 (cont.)

=font color="#000000">. 09/03/08 @353.7 hrs GLF-LGB removed corrosion from L/H &=mp; R/H Engine Inlet Cowl Lip Skins, performed NDT & re-applied Zzilon3=IAW Rolls-Royce Technical Variance TV 11807R, Rolls-Royce Service Bulletin B=700.7-710A1-10, and FAA A2-20, C4.11 Gulfstream (GAC) NTO (No Technical Obj=ction) No.:116. The NDT report for both Engines revealed that the rem=ining material thickness was above the N's minimum acceptable thickness of=.053"

To terminate any ongoing Technical Variance you must change th= lip skins

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