RAF C130 undercarriage problem
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RAF C130 undercarriage problem
There is a C130 circling around over the Wisbech area with main gear down but no nose wheel showing, has been circling for some time . Last pass there seemed to be one set of main gear fully down and the other partially retracted.
That`ll be a wind-down then....
Or blow it down on the Aux System
Skydel......the reason why our old Hercs had unique floors.....(or one of, including the need for MSP restraint points). Dash 4 is better due to natural vertical restraint offered, amongst other things.
Skydel......the reason why our old Hercs had unique floors.....(or one of, including the need for MSP restraint points). Dash 4 is better due to natural vertical restraint offered, amongst other things.
Last edited by bunta130; 11th Aug 2017 at 13:56. Reason: spooling
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Or blow it down on the Aux System
Unless of course Bunta130 is Tom Cruise's Prune Username
Or is the J different?
I had a main gear failure to lock down on a C1K going into Bardufoss in the early 70's, went into the hold at 10000', depressurised, carried out the wind down drill, still no engagement of the pins in the travelling block, undid the rear viewing window and noticed a brake hose trapped between the two, wound it up a bit and pushed the hose out of the way. Wound it down into downlock, landed safely. All that effort at altitude was knackering, would I have seen the problem with side guidance and a full pallet load?
The previous posts are talking about lowering the nose gear using the Aux system - the lever is on the port side forward of the escape hatch. Tom Cruise might have to stand on tip toe to reach it!
TBT you are probably thinking of the Ground Test Valve which is definitely Tom Cruise territory in flight!
TBT you are probably thinking of the Ground Test Valve which is definitely Tom Cruise territory in flight!
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Ha ha, I wonder how many remember that magnificently simple piece of kit.
I remember having the MLG frozen UP and landing at Gander, loaded with Sparrow Missile bodies was somewhat delayed until I unscrewed the Shelf Bracket access doors and blew some hot air into them - the gear then trundled down - phew!
One Phil Fox was the skipper, a LONG time ago !!
I remember having the MLG frozen UP and landing at Gander, loaded with Sparrow Missile bodies was somewhat delayed until I unscrewed the Shelf Bracket access doors and blew some hot air into them - the gear then trundled down - phew!
One Phil Fox was the skipper, a LONG time ago !!
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Ah apologies Bunta130 and thanks to WIDN62.
I read it as blowing the main u/c down using the Aux System. Thought I was going mad and just went back through my old diagrams. But even using the Emerg NLG Lever surely this just unlocks the NLG allowing it to freefall, then the loady visually checks the down lock throught the viewing port?
It was twenty years ago mind, so could be wrong.
I read it as blowing the main u/c down using the Aux System. Thought I was going mad and just went back through my old diagrams. But even using the Emerg NLG Lever surely this just unlocks the NLG allowing it to freefall, then the loady visually checks the down lock throught the viewing port?
It was twenty years ago mind, so could be wrong.
As I recall (and happy to be corrected) the nosewheel free fall lowering could be initiated by the lever under the co plots feet. To use the emergency system via the lever on the port forward side of the cargo bay you needed hydraulic pressure. This was either with the aux pump running or by the hand pump. As I recall the drill was to try the hand pump first to check that the system held pressure . If you did not and the problem was a leak in the nosegear hydraulic lines the the aux pump at full pressure would pump the reservoir contents overboard before you could blink.
In respect of the mainwheels I have had a couple of assymetric lowerings usually after a winter transit from cold climes. I took the inspection windows off both times and after a while the gear came out to play. Interestingly it was the port gear both times.
In respect of the mainwheels I have had a couple of assymetric lowerings usually after a winter transit from cold climes. I took the inspection windows off both times and after a while the gear came out to play. Interestingly it was the port gear both times.
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As I recall (and happy to be corrected) the nosewheel free fall lowering could be initiated by the lever under the co plots feet. To use the emergency system via the lever on the port forward side of the cargo bay you needed hydraulic pressure. This was either with the aux pump running or by the hand pump. As I recall the drill was to try the hand pump first to check that the system held pressure . If you did not and the problem was a leak in the nosegear hydraulic lines the the aux pump at full pressure would pump the reservoir contents overboard before you could blink.
In respect of the mainwheels I have had a couple of assymetric lowerings usually after a winter transit from cold climes. I took the inspection windows off both times and after a while the gear came out to play. Interestingly it was the port gear both times.
In respect of the mainwheels I have had a couple of assymetric lowerings usually after a winter transit from cold climes. I took the inspection windows off both times and after a while the gear came out to play. Interestingly it was the port gear both times.
Bryan,
yes both of mine were from Goose/Gander snow and slush with a winter pond crossing. Wonder why the port gear ? Back to the nosewheel do I recall correctly loss of the Aux system meant loss of emergency brakes and nose wheel steering ? Poor old memory cell is in turbo recall mode. It cannot last !
yes both of mine were from Goose/Gander snow and slush with a winter pond crossing. Wonder why the port gear ? Back to the nosewheel do I recall correctly loss of the Aux system meant loss of emergency brakes and nose wheel steering ? Poor old memory cell is in turbo recall mode. It cannot last !
Ah apologies Bunta130 and thanks to WIDN62.
I read it as blowing the main u/c down using the Aux System. Thought I was going mad and just went back through my old diagrams. But even using the Emerg NLG Lever surely this just unlocks the NLG allowing it to freefall, then the loady visually checks the down lock throught the viewing port?
It was twenty years ago mind, so could be wrong.
I read it as blowing the main u/c down using the Aux System. Thought I was going mad and just went back through my old diagrams. But even using the Emerg NLG Lever surely this just unlocks the NLG allowing it to freefall, then the loady visually checks the down lock throught the viewing port?
It was twenty years ago mind, so could be wrong.
We may well have been on the Fleet at the same time....I was from 1984 to 2003.
I was indeed referring to the emercency lowering lever on the port side, and not to the ground test valve that allowed the Aux system to power both Booster and Normal systems.
The lever allowed the nosewheel to be fully extended....and kept it there as long as you maintained Aux system pressure (by keeping the pump running). Bill is spot on that you kept the pump switched off and tested the pressure held by hand pump operation.
The unlocking lever under the Co's legs allowed the uplock to be disengage (at 120 ish Knots from memory)....when pulled and gear travelling the Captain used to accelerate 'smartly' to about 150 Kts to use the airflow to encourage the door to close and the gear to lock down...
Had a couple of occasions with gear frozen up despite recycling after takeoff from contaminated surfaces.....opening the inspection hatches and running full hot down the back cured it on both occasions.
Happy days......
Bryan,
yes both of mine were from Goose/Gander snow and slush with a winter pond crossing. Wonder why the port gear ? Back to the nosewheel do I recall correctly loss of the Aux system meant loss of emergency brakes and nose wheel steering ? Poor old memory cell is in turbo recall mode. It cannot last !
yes both of mine were from Goose/Gander snow and slush with a winter pond crossing. Wonder why the port gear ? Back to the nosewheel do I recall correctly loss of the Aux system meant loss of emergency brakes and nose wheel steering ? Poor old memory cell is in turbo recall mode. It cannot last !
NWS was/is operated by the Normal System.....
Still good tech from an ancient loadie though!!!
Last edited by bunta130; 14th Aug 2017 at 10:29. Reason: Clarity of explanation