NTX403 Installation Approval Test Procedure
an approach with each of the different navigation systems coupled to the autopilot (ILS,
GPS etc.) and look for any anomalies.
4. Results
If the installed system passes all of the applicable EMI tests, then no further action is
required. If interference is observed, then the interference must be assessed against
the appropriate standards of airworthiness for the system in question. For example: it is
permissible for a VFR certified GPS to lose navigation capability while the NTX403 is
transmitting, providing that it recovers properly and promptly, but it is not permissible for
an IFR Approach certified GPS to be affected in the same way. A complete discussion
of all the standards of airworthiness to be applied in assessing EMI effects is beyond
the scope of this document.
5. Procedure
A.
Operate the NTX403 transmitter on the following frequencies for at least 20 seconds.
Observe the GPS for any degradation in satellite status, or availability, or flags.
FREQUENCIES
GPS #1
GPS #2
NTX403 PASS
FAIL
PASS
FAIL
409.2000
MHz
NOTES:
Rev. 1.00
Apr 28, 2005
Page 2 of 5
ENG-FORM: 634-0101.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
