FlyingBlueKLM
Topic Author
Posts: 196
Joined: Sun Jan 05, 2020 9:52 am

Why did Boeing change RETARD to IDLE on their FMA?

Mon Mar 16, 2020 12:26 pm

Why did Boeing change RETARD to IDLE on their FMA?

If I’m correct, sometimes, when you start a descent in a 737, you get RETARD on the FMA: https://imgur.com/a/QzjhkT7 (Descending on our way to Oslo in the PMDG 737-800 NGXu)

This mode also activates during an autoland, at 27 feet RA in the 737.

But in the 777 and 787, it is called IDLE instead of RETARD. Why did this name change happen?

In the 787, you get IDLE during a manual landing and during an autoland.

https://imgur.com/a/5JEqSiL (Manual landing in Tenerife South in the QualityWings 787-10)

In the 737 photo you can see RETARD on the PFD, in the 787 photo you can see IDLE on the HUD and PFD.
NL: Bij de landing is full reverse het leukst!

EN: Full reverse is the best at touchdown!
 
mmo
Posts: 1898
Joined: Thu Apr 18, 2013 3:04 pm

Re: Why did Boeing change RETARD to IDLE on their FMA?

Mon Mar 16, 2020 1:17 pm

Because it is a game? I have never flown the 737 but on everything else Boeing has produced, it's idle. I would assume (bad thing to do), the 737 family is the same.
If we weren't all crazy we'd all go insane!
 
FlyingBlueKLM
Topic Author
Posts: 196
Joined: Sun Jan 05, 2020 9:52 am

Re: Why did Boeing change RETARD to IDLE on their FMA?

Mon Mar 16, 2020 1:32 pm

mmo wrote:
Because it is a game?

No. https://youtu.be/vWdMBrMLfMU
If you scroll to 11:30 in this video, you’ll see it changes to IDLE a few seconds later. The aircraft is a 777.

https://youtu.be/dmILzaB5VZI
If you scroll to 5:10 in this video, you’ll see RETARD on the FMA a few seconds later. The aircraft is a 737.

These are all real world videos.
NL: Bij de landing is full reverse het leukst!

EN: Full reverse is the best at touchdown!
 
unimproved
Posts: 164
Joined: Sun Jun 22, 2014 7:14 pm

Re: Why did Boeing change RETARD to IDLE on their FMA?

Mon Mar 16, 2020 2:48 pm

Likely due to the 737NG having a more off the shelf avionics package, while the 777 was designed for it. It's a regional difference in language with the US preferring idle, same with cockpit/flight deck.
 
FlyingBlueKLM
Topic Author
Posts: 196
Joined: Sun Jan 05, 2020 9:52 am

Re: Why did Boeing change RETARD to IDLE on their FMA?

Mon Mar 16, 2020 3:24 pm

unimproved wrote:
Likely due to the 737NG having a more off the shelf avionics package, while the 777 was designed for it. It's a regional difference in language with the US preferring idle, same with cockpit/flight deck.

Now I get it :)
NL: Bij de landing is full reverse het leukst!

EN: Full reverse is the best at touchdown!
 
thepinkmachine
Posts: 409
Joined: Tue Apr 28, 2015 4:43 pm

Re: Why did Boeing change RETARD to IDLE on their FMA?

Mon Mar 16, 2020 4:14 pm

As my Boeing instructor said - 737 is from Renton and other Boeings are from Seattle. They’re designed by different engineering teams.
"Tell my wife I am trawling Atlantis - and I still have my hands on the wheel…"
 
ChrisKen
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Joined: Tue Aug 05, 2008 11:15 pm

Re: Why did Boeing change RETARD to IDLE on their FMA?

Wed Mar 18, 2020 12:16 pm

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