Is it time to forgo VHF navigation? - Page 12

rocketbob · #**111** 09-04-2019, 08:55 AM

Quote:

Originally Posted by gclark

Do not mess with Rocket Bob. That guy knows very well whereof he speaks. Need more like him.

jpowell13 · #**112** 03-03-2020, 08:09 AM

I hung a VAL INS429 on the bottom edge of my panel for VOR/ILS capability and bought a used King DME for backup for my Garmin 400W. If I lose my EFIS or GPS, I can get down with the "all-in-one" VAL unit and my Garmin G4 PFD. I really like having the backup. I use a Sporty's SP400 on a RAM mount to do in flight VOR checks. The VAL and the DME were very easy to install and relatively inexpensive. John

Pilot135pd · #**113** 03-03-2020, 09:04 AM

Quote:

Originally Posted by jpowell13

I hung a VAL INS429 on the bottom edge of my panel for VOR/ILS capability and bought a used King DME for backup for my Garmin 400W. If I lose my EFIS or GPS, I can get down with the "all-in-one" VAL unit and my Garmin G4 PFD. I really like having the backup. I use a Sporty's SP400 on a RAM mount to do in flight VOR checks. The VAL and the DME were very easy to install and relatively inexpensive. John

Amen on the VAL INS-429. I'm installing one right now in my panel. Even if I can't receive it with the VAL I can always file direct to a VOR 300 miles away that coincides with the GPS location I want to get to and then just let the autopilot fly the Garmin 496 while monitoring it on the iPad moving map. It's just like having an IFR GPS but at 1/4 of the price.

gmcjetpilot · #**114** 03-03-2020, 01:38 PM

Quote:

Originally Posted by DCBrown198

With the world rapidly moving to a GPS Anyone else been pondering this? David

Anyone pondering? Yes everyone. This topic is beat to death from time to time. Let the flogging began. Ha ha.

Short answer is what is your mission, but for VFR sport pilot GPS is fine. IFR operations IFR TSO GPS and current data base is also fine.

ILS is still #1 approach world wide with the lowest minimums, no debate. So there is that. Otherwise VOR en-route and VOR approaches have been almost completely supplanted by GPS... ADF/NDB is gone the way of A-N ranges.

Can GPS go down? Oh yes it happened to me once. However if VFR it is not a big deal.

Pilotjim77 · #**115** 03-03-2020, 04:25 PM

Quote:

Originally Posted by gmcjetpilot

....A-N ranges.

I had to google this, lol.

rongawer · #**116** 03-04-2020, 08:49 AM

Yes, it's time to let it go. "let it go, let it go" - sing along with me.

I haven't experienced an actual GPS outage, meaning RAIM failure, since 2007. Only issues I've seen, and I fly a lot, have been related to testing, where the "STOP BUZZER" term to ATC works very well.

oaklandaviator · #**117** 03-04-2020, 10:18 AM

Just flew through a GPS outage a couple days ago. Military jamming exercise. I'd prefer a GPS navigator that included an ILS receiver and VOR in the box. Doesn't take up any more space and you'd at least have something if you were in an area with GPS out.

912ry · #**118** 03-04-2020, 10:49 AM

Thinking about adding another gps antenna for redundancy. Otherwise I like my system.
2 classic skyviews, AP, dual adhars, sl30. Gtx327 /gdl82 .

woxofswa · #**119** 03-04-2020, 06:26 PM

This is the GPS unreliable notam for last night from BWI to PHX.

It's common to see but not usually this bad.

BillL · #**120** 03-04-2020, 06:47 PM

Quote:

Originally Posted by rocketbob

So there's the legal aspects to this, which is clear.

There's also the aspect of being wise. So if your nice GPS unit quits working while in the soup being radar vectored, because things fail, which one has to assume will eventually happen, I certainly would feel more comfortable with a separate VOR/ILS.

I almost went GPS only, but a friend pointed out the option of needing ILS for an IFR alternate led me to install the antenna for my 650. A couple of days ago, on and IFR plan descending and headed for the RNAV 31 FAF and the 650 GPS started winking, then out and blanked out the G3X map too. So, AP is heading/alt hold only. I did have FF up on the iPad and used that to track to the FAF. The overcast luckily cleared enroute and became VMC actual but it could have just as easily remained IFR. ILS and vectors would have been my only option.

It is very good (possibly lifesaving) to have an option, and I will be practicing procedures under the hood for the next GPS failure.

Edit-PS - My GA35 and GA57 antenna apparently are too close together and GA35 blanked out reception for the 57. My so called redundancy was tied to the root failure!! Separate your antenna! Garmin can say how far.