Seneca no 3 greens if nav lights on?!?!
Join Date: Mar 2007
Location: Asia
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Get rid of the chip you yanks
Dear ASFKAP
When are you Yanks going to get over the Airbus / Boeing thing? Look at the 787 it makes the A380 look like it was delivered early!
What this has to do with a Seneca beats me
When are you Yanks going to get over the Airbus / Boeing thing? Look at the 787 it makes the A380 look like it was delivered early!
What this has to do with a Seneca beats me
Join Date: Jan 1999
Location: north of barlu
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Big pistons
I have removed my last post because it may confuse the issue, however the logic is that the disableing a system that is working correctly is not the thing to do in this situation has not changed.
Yes you are correct in saying the red light indicates power being supplied to the elec/hyd power pack but ithe power pack won't get the power if the "out of position" conditions are not met.
So it is very unlikely that after down selection when the red light has been on and then goes out that the gear is not locked down, so why mess with a system that is telling the truth? Surely if you want to check the green light in a leg why not swap the suspect bulb for one of the other greens, at lease that gives you one part of the system intact and working properly.
This assumes that there is only ONE malfunction in the system
The biggest problem with Piper main gears is bad/lack of maintenance, it is very hard to get grease into the bearings that support the gear due to grease gun access, if this is not done at the proper service intervals the gear will not lock down after a "free fall" if you have a power pack failure. The failure to "free fall" is due to internal friction. However the gear out of position will still work correctly even if the landing gear actuator CB tripps.
Yes you are correct in saying the red light indicates power being supplied to the elec/hyd power pack but ithe power pack won't get the power if the "out of position" conditions are not met.
So it is very unlikely that after down selection when the red light has been on and then goes out that the gear is not locked down, so why mess with a system that is telling the truth? Surely if you want to check the green light in a leg why not swap the suspect bulb for one of the other greens, at lease that gives you one part of the system intact and working properly.
This assumes that there is only ONE malfunction in the system
The biggest problem with Piper main gears is bad/lack of maintenance, it is very hard to get grease into the bearings that support the gear due to grease gun access, if this is not done at the proper service intervals the gear will not lock down after a "free fall" if you have a power pack failure. The failure to "free fall" is due to internal friction. However the gear out of position will still work correctly even if the landing gear actuator CB tripps.
A and C
I did not fully understand your original post and thought you were saying that you should never swap landing gear bulbs to trouble shoot a problem. I see now you are simply saying don't use the red one. Fair enough. There are 2 reasons I swap the red one as the opposed to exchanging one of the other green ones.
1) If you have selected gear down and the red light has come on as the gear cycled and then went off, it has basically told you everything it is going to. So since it has done it's job it seems the logical one to sacrifice.
2) If you swap one of the other green lights than you will be landing with that one not illuminated and while intelectually I know it is OK it just creeps me out. I guess I really want to see a light for every gear leg before I land.
I did not fully understand your original post and thought you were saying that you should never swap landing gear bulbs to trouble shoot a problem. I see now you are simply saying don't use the red one. Fair enough. There are 2 reasons I swap the red one as the opposed to exchanging one of the other green ones.
1) If you have selected gear down and the red light has come on as the gear cycled and then went off, it has basically told you everything it is going to. So since it has done it's job it seems the logical one to sacrifice.
2) If you swap one of the other green lights than you will be landing with that one not illuminated and while intelectually I know it is OK it just creeps me out. I guess I really want to see a light for every gear leg before I land.
