A LAE has the privilege of raising additional worksheet(s) to supplement task card which he deems inadequate. Any grey area can be brought up directly to QA/chief insp. etc to re-issue updated job task.
All AWS raised would be accounted for at the end of a check before final CRS.
What Bus's concern is the accountability of complex job done of UAE engineer (still under JAR system) who would just signed off (e.g. engine c/x) IAW AMM xx.xx.xx. END.
The engine is normally bolted on 2/3 attachment mounts and staged breakdown incl. dup.where required.
The Boeing wing is bolted by 2 bottle pins with bushes and staged breakdown incl. dup. where required.
Cessna???? I have forgotten!!
EASA requires detailed staged breakdown for individual accountability.
LAE is considered a professional engineer who is capable to signing off his own task without supervision and is under the jurisdiction of UK ANO (UK LAE) closely monitored by UK CAA.
Major task like wing removal requires flight test before issing C of A.