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Gascolators

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It's fully up to you to check any information you find here with
standard aviation industry sources such as aircraft maintenance
manuals, flying instruction books and, above all, FAA regulations!

by Tommy

During the annual this year we have made an interesting discovery.  Our plane has a glass gascolator and it appears that sometime in the past there were 2 sizes of glass gascolators, 2 inch and 2 1/8 inch. 

Our plane has a 2 1/8” top part and a 2” glass and bottom part.  After looking around for a 2 1/8” glass and bottom, it is beginning to look like there are a lot of aircraft out there with the same mismatched parts.

Mr. Vern Gregory and I have come to a semi-conclusion that at some point in time, the 2 1/8” glass was not available and many were replaced with the 2” glass and bottom.  I know that our plane was wrecked in about 1975 with a pretty good amount of front end damage and I suspect that is when the mismatch occurred.

Right now it looks like the only proper cure for this situation is to replace the entire gascolator with the current metal one.

I asked one of my A&P friends about the legalities.  It is her understanding that if it was installed originally, it was legal but if replaced it had to be replaced with a metal one.  Then she clarified that this was her understanding/thought/opinion/etc but would have to look it up to be positive.  Sounds logical so it can’t be right.