Im not sure about a readily available NACA datasheet or public domain resources but I have found a reference in Airbus SRM about this. (A340 51-42-11)
I think they permit this principle but under the category of hand hammering.
-support the manufactured with a correct rivet set/dolly if csk...
Thanks guys..
I think i stopped too early.
As berk said about putty/filler..I found a reference for that (accidentally)
51-73-10 repair of minor damage also for dress-out.
I was looking at 53-10-101 so i stopped when it said no action required when i plot my figures to the diagram.
this...
in a300 srm thers a diagram showing the allowable dent and i satisfied all the requirements.
- depth is allowed (vs. skin thickness and fastener distances)
- no cracks (as per ntm)
final verdict: NO REPAIR ACTION REQUIRED (iaw -same ref.)
but....below
thers an instruction for: ALLOWABLE DENTS...