Nice new patch! So, I decided to do your homework myself, it took me like 3 hours of my valuable time. I'm sure I have not catched all errors, but most. I'm still quite puzzled why you seem to be unable to do this yourself. A helpful link, probably new to you, since you're 10 years behind: https://www.iata.org/publications/Pages/code-search.aspx
Hey, and it's free! Surprise!
Here we go:
Fiji Link , IATA FJ, Should be Fiji Airways
OLT Ostfriesische Lufttransport, IATA OL, should be Samoa Airways, ICAO PAO
Olympic Airlines, ICAO OAL name is not Olympic Airways or Airlines, but Olympic Air
TVS/QS Travel Service Polska(?) ist the wrong name for Czech airline Travel Service
Aviacsa (CHP), IATA 6A does not exist since 2009 is Armenia Airways, IATA 6A, ICAO NGT
Volare Airlines (VLE) ceased op 2015, is EasyFly, Colombia, IATA VE, ICAO EFY
Efata Papua Airlines (EIJ) ceased OP in 2009, no Idea what this stands for
Air Europe Italy, ICAO AEL, ceased OP in 2008, should be People's Austria, ICAO PEV, IATA PE
Aerocaribbean (CRN) ceased OP in 2015 should be Silk Way West Airlines (Azerbaijan), IATA 7L, ICAO AZG
Air Next (NXA) ceased OP in 2010, again no idea, seems hard to find IATAs for freight AL
Kato Air (KAT) ceased OP in 2008, shoud be SaudiGulf Airlines, IATA 6S, ICAO SGQ
Interflug (IF) ceased OP in 1990 (lol), should be Fly Baghdad (Iraq), IATA IF, ICAO FBA
Wings of Alaska ceased op in 2017, should be Silverstone Air, Kenya, IATA K5, ICAO SLR
State Orenburg Avia (ORB) ceased, should be Groupe Transair, Senegal, IATA R2, ICAO GTS
Armavia (RNV) ceased 2013, should be Tus Airways, Cyprus, IATA U8, ICAO CYF
Sierra National Airlines (SLA) ceased 2005, is Jin Air Korea, IATA LJ, ICAO JNA
Pamir Air (PIR) should be Manta Air, Maldives, IATA NR, ICAO MAV
American Falcon (AFB) ceased 2009, is Edelweiss Air, Switzerland, IATA WK, ICAO EDW
Galaxy Air (GAL) ceased 2010 , is Smartwings Hungary, 7O/TVL
Pace Airlines (PCE) ceased 2009, is Golden Myanmar Airlines, Y5/GMR
Aero Services Executive (BED) ceased 2010, is Ulendo Airlink, Malawi, W4/NYS
Lufttaxi Fluggesellschaft (LTF) should be Aircompany SCAT, Kazakhstan, DV/VSV
Bristow Helicopters (BHL) surprisingly does operate Helicopters, should be Atlasjet Ukraine, UH/UJX
Hapagfly (HLF) ceased 2007 ,is Air Côte d’Ivoire, HF/VRE
Lufthansa (DLH) does not operate RJ85s (since 2012), why does it show up?
An obscure airline named WaltAir (GOT) is supposed to operate a B777-200, no clue which that is supposed to be, surely not Waltair, lol
There is an Airline called "Airkenya Express" flying around in Europe using Turkish regs, not sure but that's probably Sunexpress Turkey, ICAO SXS, IATA XQ
Probable errors, no clue what they are standing for:
KD Air (KDC)
Air City (ECE)