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Navaid reliability.
On 4 February 2009, instrument CASA EX06/09
<http://www.casa.gov.au/rules/miscinst/2009/CASAEX06.pdf> (Exemption – use of radio-navigation aids by Airservices Australia) was registered on the Federal Register of Legislative Instruments and comes into effect on 5 February 2009. This instrument exempts Airservices Australia from the requirement of regulation 173.105 of the Civil Aviation Safety Regulations 1998 (CASR 1998) that instrument flight procedures should not be designed to use ground-based radio-navigation aids unless the aids are operated and maintained by a person certificated to do so under Part 171 of CASR 1998. |
And your point is???
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non-issue
The instrument is more technical in nature than anything else, reading through the explanation confirms that the exemption is only granted because ADF personnel cannot be certified for legal reasons to be approved operators and maintainers of ground based radio aids.
Hence, the exemption is granted to allow the ADF to operate and maintain a small number of radio navaids over their bases. The only problem with this is if you don't trust the ADF chaps to operate or maintain the gear properly :ooh: wouldn't think that that would be an issue, really.. |
not unreliable at all
As PB said, the instrument is more technical in nature than anything else and is there to make sure that everything is audit-proof in the future. Nothing to do with the reliability of the nav aids at all really.
In terms of maintenance and flight checking, ADF ILSs are checked at the same periodicity and tolerances as the civil ones. Looking at the table in the instrument ADF NDBs have to be flight checked more often than the civil ones. :confused: |
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