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#1
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Advice Needed - AME Mess Up or..?
Hello. Looking for some advice from folks with way more experience than me.
The other day I took my new to me 1977 Skymaster (and the first aircraft I actually own) in for an oil change and a few small snags. My well respected AME suggested changing the spark plugs because more than half were below tolerances. Sure! Next I get an email stating that while changing the plugs the heli coil backed out with the plug on #5 rear and can not be put back in as the cylinder is stripped. Now the cylinder must be replaced and I am grounded for over a week when there is lovely fall flying weather AND I had a business trip scheduled. Ouch!!! Thoughts? Opinions??
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TC 1977 Reims Built F337G CYFD |
#2
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If it was in for an oil change, why was he messing with the plugs?
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#3
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I had them look at a few things and plugs were determined to be below spec.
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TC 1977 Reims Built F337G CYFD |
#4
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Never heard of a helicoil but looked them up. Doesn't sound like anything your AME did wrong. The threads were stripped some time ago so a helicoil was put in. They may not have used enough eg. loctite to help stop it from backing out. Installation requires a special tool which is about $1200. If the helicoil backed out cleanly it may be re-installable with this tool. Is the AME implying that he does not have this tool? or that he is not comfortable for some reason doing so ? Is the cylinder is too wrecked to safely hold the helicoil?
Note that I am not an AME - was just curious about helicoils. |
#5
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Quote:
__________________
TC 1977 Reims Built F337G CYFD |