Have just read Jerboys post:
ntelligent conversation with the flight crew about various situations (bearing in mind they are trained to a far higher level than you), 99% of the time you'll be fine.
When I was actually involved in such things Flight Deck would request advice from Load Control wwhen on rare occasions they had to do their own Loadsheets, weight and balance and provide a trim for loading.
On one occasion the Captain decided he knew better and as it was a semi-ferry ignored the advice given and a nasty incident occurred.
If I put 100 bags in the back of a 737 or two bins in the front of an A320 do I really need to know about Hold Floor Strengths or the advantages/disadvantages of certain types of lashing? I say no.
If your simply dealing wth Passenger Baggage on Charter Flights standard trims for the various Aircraft Types handled become almost second nature.
Once Cargo becomes involved then a little more thinking is required especially on bulk loaded aircraft. Spreader Boards are not always required just for HEA Items, but for point loads if the items weight is only carried on a few points, etc. A big item may mean a little lateral thinking about whether to deviate from the simple load plan and load it i say hold two instead of three and lash it. But hey you seem happy wih 99%, so OK, but I was brought up in a different era when
Safety is no Accident wasn't just a 'sound bite' and 99% really wasn't good enough.
And my record time for a manual loadsheet (A321)... 4 min 48 secs. My pencil was on fire after that one
Assuming you started from a blamk form and trim chart and, the time included the simple cross check, then that is extremely impressive. Although why you only had that amount of time is of slight concern, but I do accept that an experienced Loadsheet Basher can get it right and be extremely quick as long as another warning from long ago is remembered:
Accuracy is vital speed is secondary.