what could be the problem.when the gear is tested in the hangar everything is ok. this can happen after four months on the PA34.
2007-07-22 23:35:13 · 8 answers · asked by abubaker m 1 in Cars & Transportation ➔ Aircraft
The gear is bleeding down since the gear is held up by hydraulic pressure only. It wouldn't be a valve leak since the power pack activates when the system pressure is low. It is probably blow by in an actuator.
It will test well in the hangar because the gear isn't up for hours. It will fix itself when you recycle because the pressure is built up again.
Put the aircraft on jacks, disconnect the nose gear doors, and put the gear up. Pull down on each gear an see if you can get it to move. Replace or rebuild the offending gear's actuator.
Or replace or rebuild all three, they are probably due for it.
2007-07-23 12:32:31 · answer #1 · answered by Anonymous · 0⤊ 1⤋
I'm not familiar with the Seneca, but if the gear is similar to the Arrow I have seen something like this before. The Arrow's gear is held up with hydraulic pressure, when you hit the emergency gear extend it opens a valve that allows the hydraulic fluid to quickly drain and the gear free-falls. We were seeing the in transit light go on and off repeatedly during flight. It turned out that there was a torn gasket in the valve connected to the emergency gear extend and that was allowing the hydraulic fluid to slowly leak. Then the gear would begin to fall and the gear would retract it again then it would bleed again.. and on and on.
2007-07-23 00:22:03 · answer #2 · answered by newfaldon 4 · 2⤊ 0⤋
sounds like a chafed wired .. because its seeking a ground.. and then you get a light ... when the gear goes from extend to retract. that completes the circuit.. when the gear reaches the up switch it removes the ground from the intransit circuit.. (light off) so you have a wire chafed somewhere.. intermittent problems are hard to duplicate sometimes.. find the wire that gives the intransit light its ground..good luck..
2007-07-25 10:56:48 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Remember in flight you have vibration and the a/c is flexing . Sounds to me like one of your uplock switches is rigged at a max or one of your mechanical parts is worn out or sloppy. I have dealt with this problem before and have had to swing the gears to many times and go around smacking the gear doors with the palm of my hand. Inspect. all switches and wires for corrosion and all mechanical parts for slop. The feds are going to be all over you soon if you write it up to much .
2007-07-23 10:05:33 · answer #4 · answered by miiiikeee 5 · 0⤊ 1⤋
Hi there If you lift the rubber cover on your handbrake you will see a switch there it has more than likely just worked a bit lose. Adjust it back in towards the handbrake and tighten the locknut and your done. Good luck Dave (gorleston u.k.)
2016-05-20 23:45:15 · answer #5 · answered by ? 3 · 0⤊ 0⤋
Sounds like a sticking micro switch in the indicator circuit to me. That's where I'd have the spark chasers start anyway.
2007-07-23 01:48:12 · answer #6 · answered by Anonymous · 1⤊ 0⤋
If its not one of the preceding two ideas... I've had this problem which was traced to an electrical ground being loose at the buss bar.
2007-07-23 01:57:41 · answer #7 · answered by flea 5 · 0⤊ 0⤋
One of the uplocks has slack, or the switch showing up and locked is bad.
2007-07-23 10:13:47 · answer #8 · answered by eferrell01 7 · 0⤊ 1⤋