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Old Oct 11, 2016 | 10:49 am
  #10  
Wasabi Tofu
 
Join Date: Nov 2002
Location: Japan
Programs: NH Diamond, JL JGC Diamond, BA Gold Guest List(Gold for life), CX Diamond
Posts: 1,580
Originally Posted by pandaperth
I agree
Looking at the 17 Oneworld flights I have taken this year and comparing the gcmap figure with the miles that AA gave me
  • all except one segment were within 2 miles of each other
  • the big discrepancy was on OSL-LHR where gcmap said 750 miles and AA said 724 miles
GC is GC.
OSL-STN 710 miles (GC)
OSL-LCY 737 miles (GC)

TPM of LON-OSL is 734.

Some airlines use TPM rather than GC.
For example, JAL uses TPM. So HKG-NRT and HKG-HND are credited by using TPM of HKG-TYO. However, CX uses GC based miles. CX credits more miles for HKG-NRT than HKG-HND.

However, I have no idea about AA's 724.
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