CF6-80C2 Nacelle - Deviated Repairs from OEM SRM/CMM

Probably depends on the extent of "deviation" from the SRM, the location, repair type, etc, etc.

Have you contacted EASA?

My suggestion is to contact directly nacelle manufacturer with this issue - probably it will be STE/MRAS in Baltimore in this specific case...

H... Some parallel 'thoughts/comments' on the subject, based-on several years of field and depot maintenance experience of Nacelles.

Often SRM repairs are developed for expected/extraordinary deterioration, typical/expected external damage [IE: bird strikes, etc], engine failure/containment... or SRM-added 'special repairs' developed over many-years due to real-world service-damage experience.

However... the external world is full of surprises... be cautious about trying to 'make-a-fit' with existing SRM repairs for all damage. A 'neat-fit' of unique damage-to-one-or-more SRM repairs may not be possible... and heroic engineering analysis/repair may be required by a DER [or equivalent].

Certainly, the Nacelle OEM engineers will have the best understanding of the structure... hence may have insight into suitable/unique requirements. 'Creativity' of the repair engineer... in-bounds of the engineering is useful. OH and sometimes reparability is limited by extreme costs... replace being a less expensive/intensive/heroic option. OH... and the OEM has access to original tooling and assembly mechanics for every aspect/element of the assembly... or at-least 'should'.

Be Cautious... with composite/honeycomb nacelle structures... successful repair may be an illusion... since contours/fits/clearances are often tight and very critical... and easily messed-up.

Regards, Wil Taylor
o Trust - But Verify!
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation, Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", HBA forum]
o Only fools and charlatans know everything and understand everything." -Anton Chekhov

fully agree - Continental Airlines can say something about that....

Thanks for your comments.

SWComposites - I will be contacting them but wanted to see any reason before contacting them.

Harshene -
Way more info is needed.
What is your organization - airline, MRO, other?
Where exactly are you located?
Who has designed the subject repair?
Have you contacted the nacelle manufacturer for an approved repair?
A Part 21J DOA organization would need specific EASA authorization for a CF6 nacelle repair in order to approve your repair. Did the DOA that you contacted have that authorization?

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Hi SWComposites,
I am working with an MRO based in ASIA.
I also have previously worked with Part 21J.
Can you let me know what specific authorization is required for CF6 nacelle repairs. DO you mean CS-E privilieges.