MAKG1
Touchdown! Greaser!
- Joined
- Jun 19, 2012
- Messages
- 13,411
- Location
- California central coast
- Display Name
Display name:
MAKG
What antennas are required for airworthiness?
What antennas are required for airworthiness?
I think expecting a private pilot student to know what each antenna is connected to is silly. You don't need to know. You just need to recognize it is present and not damaged.
If the plane had a transponder, DME, ADS-B, TIS, etc etc, there could be 3-5 identical looking antennas on the belly. No pilot could or would know what each one is on a plane they don't own. And even a plane they own, many still wouldn't and don't need to know. Just like you don't know which of the two com antennas on the roof is com 1 and com 2. You could have two GPS antennas. Which is which? No way to know and no reason to know.
If his reason for failing you was that you didn't know the name of the antenna, I think you need a new DPE. Especially given his "i want to leave now" attitude.
You should know what your comm, VOR, etc antennas are.The transponder, DME, ADS-B, and TIS antennas all look alike. With diversity receivers, you might even have a few identical looking ones on the top too. They're not labeled. And there is no requirement for such. Please explain how anyone other than the avionics tech that installed the equipment could possibly know which is which. Then explain how the DPE could possibly know in order to tell the student they're wrong.
Recognizing there is a problem that requires further investigation does not require knowing the intricate details of the problem. An antenna is broken is all anyone can be expected to know. There is no way to know any further without taking apart the interior to access the coax.
The transponder, DME, ADS-B, and TIS antennas all look alike. With diversity receivers, you might even have a few identical looking ones on the top too. They're not labeled. And there is no requirement for such. Please explain how anyone other than the avionics tech that installed the equipment could possibly know which is which. Then explain how the DPE could possibly know in order to tell the student they're wrong.
Recognizing there is a problem that requires further investigation does not require knowing the intricate details of the problem. An antenna is broken is all anyone can be expected to know. There is no way to know any further without taking apart the interior to access the coax.
Which one is com 1? Which one is com 2? What if you had an old Loran? Now you have three identical com looking antennas on the roof. No way to know which is which. The VOR and ADF antennas are the only ones which are positively identifiable. All the others are assumptions, which is far more dangerous than asking.You should know what your comm, VOR, etc antennas are.
Sure, if there is radar coverage down to the ground at the ramp.It's not like it's hard to test a transponder for functionality. Set it to ALT or ON, watch the little interrogation light go on episodically.
Which one is com 1? Which one is com 2? What if you had an old Loran? Now you have three identical com looking antennas on the roof. No way to know which is which. The VOR and ADF antennas are the only ones which are positively identifiable. All the others are assumptions, which is far more dangerous than asking.
.
If you have a broke antenna, you have a problem. Can a private pilot initiate the flight with a known broke item?
Yes. Disable and placard inop unless it is a required airworthiness item. Pulling and clipping the CB ought to be enough. 14 CFR 91.213(d)(4) explicitly allows a rated pilot to do that.
All airspace that requires a transponder can be entered by asking for it, at any time. 14 CFR 91.215(d)(2). It is not required to fly it somewhere to get it repaired right now.
Virtually all the aircraft around here that have DME units have them placarded inop.
What else must be done?
So you would launch into say a Class B with a known inop transponder?
You asked if a private pilot could fly with known broken equipment. It is done by almost every local airplane with a DME unit, every time it is flown. The transponder is not the only potentially broken piece of equipment, just the example at hand.And that has what to do with the discussion??
With permission, yes. Which you always need for Class B. For crossing KSFO, you won't see any jet traffic if you pass close to the 10 numbers (across the highway as the clearance usually restricts) at 3500.
I would expect that Approach would give a "remain clear of Class B" given the history of the Cerritos midair. Not a problem unless the destination airport is inside Class B or VFR requires a transition (it happens sometimes). But if they are willing to clear me in and take altitude reports (or, more likely, restrict altitude), I can avoid the 747s.
I'd expect them to have a bigger problem below the floor of Class B than inside it, but I'd be talking to Approach regardless.
All fine and dandy, but we are talking about a check ride for a private pilot here.
So if this was you on the checkride, and the transponder antenna was broke, and you couldn't identify which antenna it is, nor could you explain to the examiner what the procedure should be at this point, you would expect the examiner to let you continue? Really?
We're talking about a check ride where the applicant did exactly what you're getting at, and got failed anyway.
Go out to the plane begin preflight he ask what the antenna on the top is (radio) then he asked me what the fin on the bottom is.... And I just blank... something you go over your first flight and any other day i'd get it but not today. So being honest I said I'd have to look it up. DPE wasn't happy about that ask would you fly if it was broken off, I said no(not gonna fly if something idk is broken), DPE said why not. I said I'd have to look it up real quick.
But, that's not at all what you asked. You asked if a private pilot -- not a check ride applicant -- could fly with known broken equipment. Yes, he can with the correct procedures.
Could it be possible, that the DPE during the oral part found out, that OP had some weaknesses in the airplane systems, and not knowing what the xpdr antenna was, was simply the last straw to say no, we need to do this again?
And our applicant in this thread didn't know the correct procedures, yet you believe he should have been given a pass.
I was watching one of those DPE seminars on the PPL checkride, and he discussed a situation like this. The answer that he wanted to hear was that the applicant would consult a mechanic and not assume that they could figure out whether system X or Y would be legal to fly. Again, the critical thing is, every DPE has things they want to hear, and I think it's good to speak to other folks that have received checkrides from the DPE to find out what those sensitive issues are.
sorry about the busted checkride, but really, everyone should know that the fin underneath the plane is connected to the flux capacitor, which is required if you're going to carry passengers during the day.
sorry about the busted checkride, but really, everyone should know that the fin underneath the plane is connected to the flux capacitor, which is required if you're going to carry passengers during the day.
you'll do fine next time now that you have the correct information!