Jump to content

White Powder Rear of Engine Compartment

Recommended Posts

Any idea of cause of this white powder at rear of engine compartment?  The plane is undergoing an annual and the A&P sent me the picture.  I thought I’d ask the experts.  This is a 912iS.


Edited by Newkentboy
Add engine type
Link to comment
Share on other sites

It appears that the heat insulation tape (?) wrapped around the coolant hose (?) may be fastened with some form of adhesive (no clamps visible?) -- perhaps this adhesive is being melted by the heat and/or petroleum products and flowing aft???

Link to comment
Share on other sites

The blueish coolant is likely the OEM that the airplane was shipped with from Europe. I am not certain what it looks like when there is a leak and it dries, but with the location I would suspect a small coolant leak from the hose at the spring clamp. I have seen this kind of leak before when the hose has been freshly installed. Normally a reseating of the clamp will fix it.

Also it is unlikely to become a catastrophic failure, just a nuisance. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...