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Thread: INS and GPS.
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Old 19th Apr 2010, 08:00
  #13 (permalink)  
kijangnim
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Greetings 411A
Sure , but in some areas... it doesnot , to be certified as sole mean, the equipment has to demonstrate at 95% of the time:
Availablity
Continuity
Integrity

and GPS always had an integrity issue, this is why the TSO129C (GPS) specifies that RAIM reciever autonomous INTEGRITY monitoring had to be built in.
SO GPS can only be PRIMARY mean of navigation until the integrity issue is solved.

Now it is possible that in the case of the equipment you mention that HWL had a Non Objection within a specified area, but it doesnot mean that it was SOLE MEAN OF NAVIGATION Certified.
Regards
 
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