NC58374
Flying is a miracle.
- Joined
- Feb 1, 2013
- Messages
- 444
- Reaction score
- 93
After speaking extensively with Mr. Paul Babcock in person about LEGALLY converting my Continental A65-8F to an A75-8F and then LEGALLY installing said engine into my airplane, I thought I would share the procedure in case anybody would like to know. Using the procedures described below, there are several different configurations available but I am just describing the A65 to A75 conversion.
Step 1.
Obtain a copy of Continental Service Bulletin M47-16.
Step 2.
Read it.
Step 3.
Assuming that you read this, you are now scratching your head and saying, "but continental doesn't give permission or even discuss this matter anymore...this is too old.." You are correct. see step 4.
Step 4.
Obtain Continental Service Bulletin M75-6 Revision 1.
Step 5.
Read it.
Step 6.
With these two documents you now have permission to legally convert the engine described in SB M47-16 that you started with (in my case an A65-8F) into the engine conversion that they allow (in my case an A75-8F). They are even kind enough to include the parts list of required parts for each allowed conversion. My engine now becomes an "A65-8FCA75-8F".....whew, that's a mouthful.
Step 7.
"But wait", you say...My aircraft came with an A65 and I would need a field approval to substitute an A75 engine onto my plane.....The FAA won't give anybody field approvals anymore....(see step 8)
Step 8.
Contact Mr. Paul Babcock and obtain his STC "SA00270BO" You may now legally install said engine into your aircraft. You may also increase your gross weight to 1220 legally with this same STC.
Step 9.
Do all this work in accordance with approved and acceptable data and record the proper log book entry and form 337.
Step 10.
Remember, honesty is the backbone of an outstanding technician.
Step 1.
Obtain a copy of Continental Service Bulletin M47-16.
Step 2.
Read it.
Step 3.
Assuming that you read this, you are now scratching your head and saying, "but continental doesn't give permission or even discuss this matter anymore...this is too old.." You are correct. see step 4.
Step 4.
Obtain Continental Service Bulletin M75-6 Revision 1.
Step 5.
Read it.
Step 6.
With these two documents you now have permission to legally convert the engine described in SB M47-16 that you started with (in my case an A65-8F) into the engine conversion that they allow (in my case an A75-8F). They are even kind enough to include the parts list of required parts for each allowed conversion. My engine now becomes an "A65-8FCA75-8F".....whew, that's a mouthful.
Step 7.
"But wait", you say...My aircraft came with an A65 and I would need a field approval to substitute an A75 engine onto my plane.....The FAA won't give anybody field approvals anymore....(see step 8)
Step 8.
Contact Mr. Paul Babcock and obtain his STC "SA00270BO" You may now legally install said engine into your aircraft. You may also increase your gross weight to 1220 legally with this same STC.
Step 9.
Do all this work in accordance with approved and acceptable data and record the proper log book entry and form 337.
Step 10.
Remember, honesty is the backbone of an outstanding technician.
Last edited:
