Totally agree... The route published by Malaysia in the preliminary report does not stack up on several levels.
This is the military radar coverage by Thales Ratheyon GM400 radar east of the Malay peninsula. Neither of these radar stations are reported to have seen MH370 fly back from IGARI. The Malaysian Government insists MH370 dropped to 5,000ft to avoid radar and flew around like a fighter plane, including penetrating the 7,000ft+ Titiwangsa Range in darkness flying nap of the earth.
Then there is the issue that after 17:30 UTC JAL750 established line of sight VHF contact with MH370. JAL750's captain said he spoke with co-pilot Fariq Abdul Hamid and all appeared normal. At 17:31 UTC JAL750 was at 32,000ft flying north east from Ho Chi Minh (11.55N, 108.43E). This position was 398nm from IGARI.
The radar horizon from 32,000ft to another aircraft at 5,000ft is 306nm. This means if MH370 dived to 5,000ft at IGARI and flew west then it would never have communicated with JAL750, but not only did it speak to JAL750, but also with MH088 which was even further north over Vietnam.
This is the VHF radius from JAL750 to another aircraft at 5,000ft:
Whilst the Burst Offset Frequency chart displays velocity as a frequency, the frequency also tells us if that is towards (increase) or away from the satellite (decrease).
Because INMARSAT's position was west of MH370 it can also be described simplistically that any decrease is east away from INMARSAT and any increase is west towards INMARSAT.
The biggest inconsistency is that until about 17:24 UTC MH370 was observed by radar/transponder returns flying east when the BOF chart suggested it was flying west. If the BOF chart is to be believed MH370 should have flown west from its position at 17:07 UTC, not from IGARI. The BOF chart data does not match radar data.
Another issue is that originally it was said MH370 flew IGARI-VAMPI-GIVAL-IGREX.
When relatives leaked Butterworth radar imagery from a conference at Beijing only showing a target flying from Penang to VAMPI to MEKAR the Malaysian government quietly shifted the goalposts and adapted the story to the new route claim.
As that route exits the Straits between 18:25 and 17:41 UTC it flies ostensibly SW diagonally towards the satellite yet the BOF chart shows the opposite, a target flying away from the satellite.
The orientation of the above image is looking from the west.
Then after 17:41 UTC is the biggest con job:
In the final part from 19:41 to 00:11 UTC the BOF chart shows constant frequency increase as if MH370 flew towards the satellite, therefore if anything MH370 should have flown into the middle of the Indian Ocean. Instead the Malaysian Government insists it flew the opposite direction.
Whilst I have no difficulty accepting that the southern arc distance was an accurate figure, the whole story of how the BOF chart plot directed searchers to the location where Ocean Shield heard ULB pings is a fallacy.
Whilst I do give credence to the Exner BOF chart the official position does not accept Mike Exner's revised chart.