General Category > Helio Modifications

H391B service letter #48


Barry Dechert:
The documents of service letters I have are only up to #34, could some one help me with obtaining a copy of service letter #48. This modification involves removal of the original exhaust augmentor tube mounted on the lower fuselage firewall aft. The augmentor had previously been removed I would like to properly document it check for accuracy. Thanks, Barry.

Doug Johnson 1:
I previously posted about Service Bulletins 1-38. 34-38 are carry thru spar related.

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Hopefully someone will share any bulletin above #38 that they have.


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