A few points...
100% great post... Yes the Jeppesen does not have the approach path angle - this could lead to an error with a tired crew. LIDO does show the correct angle - actually they work it out to a 3 degree approach path by starting the decent further back and arriving at minimums (670) - they also already show the CANPA minimums (620 + 50)... again just another way of avoiding a slip up with a tired crew.
The approach in Tripoli seems to me (no expert in IAP design) to be quite poor... why not make the state published procedure a 3 degree path?
For the poster who does not know when to pull without DME, the A320/330/340 are aircraft that with crew who know what they are doing are independent and not reliant on ground based navigation aids.
There are no less than 3 ways to fly the approach into Tripoli using just aircraft systems and not having to use the aids on the ground... which is a good thing as they don't work correctly!
Now a question for those really in the know with regards to approval for managed / managed can BA and LH for example do a fully managed approach into Tripoli (Legally) when the state who designed the underlying procedure does not authorise managed / managed approaches?
A few years ago at the request of Continental Airlines, in the UK several RNAV approaches were published but only for their (COA) use as they were not yet approved procedures in the UK.
PT6A