BJC to COS and return for Pilot Pro and ILS confirmation
Block out 2004
Takeoff 2010
Tech Cowan
In 2021, Bo reported interference on the VHF1 radio at 125 MHz. All DSMs were turned off to see if that improved the issue and for the first approach. This was done with the switch at the ADS rack.
2023 The Nose DSM power was turned off at the MPDB for the first ILS approach
2036 DSM nose breaker and main switch turned on for ILS confirmation.
2046 saw all VCSEL variables at NAN. After landing found that the instrument had not been turned on.
2059 PSTF and DSMTemp 305 are reporting NAN
2124 Nose DSM breaker pulled to verify new issue was with the aircraft and not the DSM's
2126 All DSMs off to verify they were not the issue.
2157 Land
2200 Block in
Note on the ILS troubleshooting: to my knowledge there were no issues with our DSMs and the ILS system. The problem that the pilots were looking at was when the system was set up in a cross configuration and one of the displays did not report getting the ILS signal correctly. The pilots will be able to provide more information about this, but it was not the instrumentation that was causing this issue.
I did not hear back on the VHF radio and the 125 Mhz issue.
PP02 night flight
Block out 0114
Take Off 0119
Tech Cowan
0127 VCSEL still all NAN. The status page says it is connected, but there is no data. Tried various power cycles and ways to get it going but did not get any data the whole flight.
0133 2DC Concentrations, should be 2DS data
0343 2DS computer found off, restarted.
0420 2DS computer found off, restarted.
0439 2DC Particles.
Land 0455
No new issues other than VCSEL still not working. No aircraft issues.