UK Aircraft Maintenance
 

We fly a C172 - all the maintenance, including annuals and 50hr services, is done by an extremely competent but retired BA engineer (who does not hold any CAA licenses anymore).
He does all the work and then his work is signed off (to comply to CAA regulations) by friends/buddies with the necessary CAA licenses but they are not involved in executing the work or providing any oversight to what he does.
My question, is this legal and if we were to have an insurance claim, would the Insurer be able to 'wiggle out' of their commitment.
I do not doubt his competence or his knowledge but I am just concerned we may be compromised in the event of a catastrophe - in a similar vein, if a pilot with say 20,000 hours but no valid license were to fly an aircraft and crash, it is coceivable that the Insurer will not fulfill their obligations as the experienced pilot did not comply to the regulatory requirements.
Thanks in advance for some guidance

The CRS Signatory, should, at least, have an oversight of the work carried out, and it's him/them that are risking their licence should the old guy miss anything.
Also, dependent on the work carried out, ie Flight controls and or Powerplant, there may be Independent Inspections due.

Your Insurers would indeed be able to wiggle out as you have now posted that the aircraft is being maintained without the oversight of a licensed engineer in a public forum.

Read Part M

Not very helpful , why bother posting.

because Part M details the requirements of Release to Service and who can sign what .......................... See M.A.801, M.A.402 for starters

https://www.easa.europa.eu/sites/def...%202017%29.pdf

But your post didn't exactly help on the original post either.

Is the airframe come under PART M? Not exactly CAT above 5750Kg MTOM nor even half that for the B3. Again I am not up to date on the updated EASA lower weight limit regs. But then I have just read up about ELA2 typed airframes. You are correct BlueFin and the OP fears are justified. Workseller123, you better sort your **** out before you kill someone. As Operator you have final responsiblity when flying.

When reading this stuff, the purple Highlight text is applicable to the "small" stuff, (Good Hint There)
It is all a bit of a halfway house as smaller aircraft are intended to have there own part, Part M Light (Still to be released) long overdue and pushed back several times