Aircraft logs

[R6_kid:Me]

usually the landing gear shouldnt retract unless there is power, so on the ground you would either need the aircraft to be running or hooked up to an GPU.

I have pics of a skyhawk that had such a thing happen. Mechanic left the gear lever down after peforming checks (with power off), power gets hooked up and turned up, nose starts to drop and proceeds to smash the nose cone and that expensive radar thingy

[Swoop]

usually the landing gear shouldnt retract unless there is power, so on the ground you would either need the aircraft to be running or hooked up to an GPU.

I have pics of a skyhawk that had such a thing happen. Mechanic left the gear lever down after peforming checks (with power off), power gets hooked up and turned up, nose starts to drop and proceeds to smash the nose cone and that expensive radar thingy

There should also be a squat switch, which detects pressure on the undercarriage and prevents retraction.
Simple solution: "Gear down and welded":spudbn:

[Karma]

Wouldn't the sheer weight of a 757 stop the gear from retracting.

Consider the power of the undercarriage servos when compared to the friction caused by the tyres being pushed onto the ground by the weight of the plane.

[marty]

the retract actuator would overcome the weight of the aircraft - there's 3000psi on a 8" diameter piston! squat switches are not infallible (pulled CB maybe). the gear can retract manually if the maintennance lever is pulled (normally only can be extended manually in flight).

it's not that long ago that a very nice panther (chieftan) light twin retracted its nose gear whilst taxiing on the apron at auckland

personally - i woudn't be under an aeroplane while someone was playing with the undercarriage lever on the ground. murphy's law prevails

[R6_kid:Me]

yeh, i've seen the C-130 up on stilts in the hangar at whenuapai when they were trying to sort out a fault in the undercarriage, was a bit wierd to see it from 100m away with the landing gear going up and the plane not dropping to the ground. I didnt see the stilts till i got right up to the hangar!

[marty]

i've got some pix of a 747 in the hangar with the gear tucked away - an awesome sight to see 200 tonnes sitting on 3 jacks. one test we had to do was an emergency retract - as the gear comes down about 1/2 way, it is selected back up - the wings bend, it all creaks and groans, and the gear bounces wildy! scary stuff.

F/F has seen how much damage an improperly secured body gear on a 747 can do to someone who gets in the way when it retracts when it wasn't supposed to.....

[WRT]

Can do do?

I bet he bloody do do-ed himself . . .

[bane]

usually the landing gear shouldnt retract unless there is power, so on the ground you would either need the aircraft to be running or hooked up to an GPU.

so technical! GPU... gonad perusal unit???

nose starts to drop and proceeds to smash the nose cone and that expensive radar thingy

umm... what happened here...

*I knoe nothink*

[nudemetalz]

" The Airbus was preparing for a test flight from the Thai Airways International maintenance area at BKK.
The MD11 was doing an engine run. The only people in the cockpit ofthe MD11 were maintenance engineers. About five of them.
They had the wheels chocked and the brakes on. They ran all three enginesat full power as part of their engine run!!!
None of them noticed the aircraft, with brakes on and wheels chocked,sliding across the tarmac - leaving heavy skid marks - which were visiblefor months after!! Suddenly the cockpit went dark and they looked up.
The wing of the Airbus rode over the top of the MD11 cockpit, whereit split and spilt several tonnes of fuel into the interior of the MD11.
The Airbus was so severely damaged that it didn’t fly again. It wassold as scrap.
The MD11 was repaired over quite some months by McDonnell-Douglas."

[SARGE]

my job in the Service required that we flew quite often in VietNam era helo's ( Huey and such.. this was the early 80's before the Blackhawks really came about in general useage..)

taking off from the deck of an aircraft carrier one beautiful day.. we heard a loud *CLUNK*..


looking outside .. we noticed that the LANDING SKIDS had fallen off the bird and ended up in the ocean due to an airframe engineer who had failed to tighen them back on correctly after some repairs to the undercarriage..

now if you are familliar with the physics of rotary winged aircraft.. you will no doubt realize that if you put this particular beast down without the skids attatched, you will flip said beast and throw wildly spinning bits of shattered blades frikkin everywhere ..


add to this .. the pitching deck of an aircraft carrier in open water and 6 fully equipped US Marines..

we hovered for about 20 minutes while the mechanics tried to reattach a set of skids to the Huey while the carrier bobbed and weaved under them and the blades of doom whirred above them..



damn that water was cold..

[nudemetalz]

my job in the Service required that we flew quite often in VietNam era helo's ( Huey and such.. this was the early 80's before the Blackhawks really came about in general useage..)

taking off from the deck of an aircraft carrier one beautiful day.. we heard a loud *CLUNK*..


looking outside .. we noticed that the LANDING SKIDS had fallen off the bird and ended up in the ocean due to an airframe engineer who had failed to tighen them back on correctly after some repairs to the undercarriage..

now if you are familliar with the physics of rotary winged aircraft.. you will no doubt realize that if you put this particular beast down without the skids attatched, you will flip said beast and throw wildly spinning bits of shattered blades frikkin everywhere ..


add to this .. the pitching deck of an aircraft carrier in open water and 6 fully equipped US Marines..

we hovered for about 20 minutes while the mechanics tried to reattach a set of skids to the Huey while the carrier bobbed and weaved under them and the blades of doom whirred above them..



damn that water was cold..

Reminds me of that MPEG I have of a Marine Corp CH-46 approaching a deck of a ship. The undercart gets caught up in the fence and over it goes into the drink.
I'll see if I can find a link to it.

[R6_kid:Me]

so technical! GPU... gonad perusal unit???



umm... what happened here...

*I knoe nothink*

GPU - ground power unit.

with the skyhawk, the power comes on, hydraulic pumps go into action and the landing gear started to retract.

[vifferman]

Sorry - Repost.

[Spazman727]

P: IFF inoperative.
S: IFF always inoperative in OFF mode.

I thought IFF meant identify friend or foe? Why does Qantas need that on their missiles? Why do they need missiles at all?

[Swoop]

I thought IFF meant identify friend or foe? Why does Qantas need that on their missiles? Why do they need missiles at all?

That is what happens when some dickwad takes a email and puts a new title at the top. Changing "Air Force" to "qantas" probably looked like a good idea at the time.

btw. Qantas doesn't have missiles.