Jeju Air 737-800 gear up landing slams into wall

[MikeD]

Thinking back to my -200 days… Nope!

In other 737 news, the guy who did my 737 OE back in 1999 I’m doing his 350 OE next month. “My My, captain how the tables have turned! ”. Nah, he was a really cool guy and a lot of my style is based off him.

Nope. No RAT. And may not have helped these guys as they may have been too slow and too short of time available for a RAT to have been effective before they were back on the ground.

 

[DE727UPS]

The RAT just gives hydraulic pressure to flight controls. Powers nothing else. A plane with manual reversion doesn't need a RAT.

 

[BobDDuck]

The RAT just gives hydraulic pressure to flight controls. Powers nothing else. A plane with manual reversion doesn't need a RAT.

I provides some power to instrumentation as well. Most modern planes don't have any standby gauges that aren't electrically powered.

 

[DE727UPS]

Depends on the plane, I guess. Not the 75/76. The 76's you have the HDG to power some standby stuff but the RAT only provides hydraulic pressure to the center system and all that's on that is flight controls. I've been studying 75 stuff and it seems like the HDG was an option on some 75's which I never heard of before. Maybe different airlines had different RAT features.

 

[Boots2Wings]

The RAT just gives hydraulic pressure to flight controls. Powers nothing else. A plane with manual reversion doesn't need a RAT.

Rat on the bus gives enough elec to power the essential ac/dc busses.

I wouldn't be surprised if they lost the dfdr with total ac failure then. Even on the bus it tends to drops out on the rat. The cvr though…thats interesting. I recall some weird verbiage about potential drops if the plane switches from ac to dc power or vice versa where the cvr may drop temporarily, but total gone is odd.

 

[derg]

The RAT just gives hydraulic pressure to flight controls. Powers nothing else. A plane with manual reversion doesn't need a RAT.

I figured they’d have some hydraulic power for gear or flaps

 

[Roger Roger]

I figured they’d have some hydraulic power for gear or flaps

The gear is gravity and standby flaps are electric

 

[derg]

The gear is gravity and standby flaps are electric

True story bro!

 

[derg]

Hell, I haven’t trimmed since 2013?

 

[Roger Roger]

View attachment 81795


True story bro!

I’m pretty sure the standby gyros are powered by a hamster on a wheel

 

[Roger Roger]

modern planes

But we are talking about the Guppy

 

[Autothrust Blue]

But we are talking about the Guppy

On the plus side, most anything that can happen to an NG has already happened to an NG.

On the minus side, Max.

 

[Minuteman]

The gear is gravity and standby flaps are electric

Electric motor-driven hydraulic pump on the B system?

 

[Roger Roger]

Electric motor-driven hydraulic pump on the B system?

TE flaps just straight up electric motor jacked into the flap drive

 

[Screaming_Emu]

TE flaps just straight up electric motor jacked into the flap drive

I can assume that takes an eternity?

 

[mikecweb]

Hell, I haven’t trimmed since 2013?

Not my thing but some people are into that.

 

[derg]

Not my thing but some people are into that.

POINTS!

 

[DE727UPS]

I can assume that takes an eternity?

Three minutes.

 

[Autothrust Blue]

Three minutes.

That's about what we're told to allow for alternate flap extension on the 757 and 767, too, from UP to 20, if memory serves. With Flaps 5 being the step that takes the longest.

 

[derg]

That's about what we're told to allow for alternate flap extension on the 757 and 767, too, from UP to 20, if memory serves. With Flaps 5 being the step that takes the longest.

Full “F1” extension on the ETOCS-equipped 350s takes ‘quite a period of time”, normally.