Old timer here, been flying in Africa on and off since 1974...
Last time was 2005...
Aeronautical "civilization" only in South Africa, and coastal areas of North Africa...
All the rest of continent is basically NON-RADAR and ATC "deficient".
Learn "basic" aeronautical French language. Numbers 0 to 9...
xxx
Fly your FL plus or minus 100 or 200 feet... maybe 1 NM to the R or L of track. I often did.
(There might be another airplane at your level "ATC forgot about") -
Monitor 126.9 and 121.5. Make BLIND POSITION REPORT 5 minutes before crossing any other airway.
At night, turn landing lights ON when about to cross other airways.
(In NOV-DEC there will be a lot of East/West traffic in SAHARA area) - Hajj pilgrim flights.
All of their air forces MiG-17s have not flown since 40 years ago...
Very unlikely to be intercepted for violation of their airspace.
Control towers VHF radios, or ATC VHF/HF all require to be plugged in wall outlet.
Only ONE outlet in their office... Radio may be OFF when boiling water for tea or Nescafé.
xxx
Was it about 1993...? - I landed one night in Sokoto, Nigeria... 747 with 498 pilgrims.
Tower did not answer, runway lights ON, and wind sock was visible... I decided to land.
Controller sleeping under table. Sorry but woke him up with JT-9D engine noise on ramp.
xxx
Landing fees (and handling fees) can be negotiated...
(Fees vary depending day of the week and phases of the moon).
Take a load of $1.oo and 5.oo bills, for "tips".
(Do not overdo it - $1.oo is a day's wages in countries like Mali or Sierra Leone)...
Baggage porters, fuelers, cleaners, etc... all will beg for a cold can of Coca Cola...
Give it to them AFTER they complete their job...
xxx
Happy contrails