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A330 Cockpit... What's This?  
User currently offlineQ330 From Australia, joined Dec 2003, 1460 posts, RR: 22
Posted (9 years 12 months 2 days 17 hours ago) and read 6805 times:

Does anyone know what the small object is on the centre beam of the windscreen in the A330's cockpit? It appears to be two red LEDs with a little white thing in between, but I'm not sure what it's for. These photos show it clearly:


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Photo © Brenden
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Photo © Tim Feise - APO Photos



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Photo © Bart Noëth
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Photo © SPM



Thanks in advance!

-Q




Long live the A330!
17 replies: All unread, jump to last
 
User currently offlineFritzi From United Arab Emirates, joined Jun 2001, 2762 posts, RR: 2
Reply 1, posted (9 years 12 months 2 days 17 hours ago) and read 6677 times:

They are not LEDs. They are visual cues that help the pilots adjust their seats properly.

Please correct me if I am wrong, but I think that you should be able to see the white ball a bit above the red one. If you can, then your seat is correctly adjusted.


User currently offlineBeechcraft From Germany, joined Nov 2003, 828 posts, RR: 43
Reply 2, posted (9 years 12 months 2 days 17 hours ago) and read 6680 times:

hi,
i guess i could be a similar feature to what we use on the CRJ
it is used to find the optimal seat, or eye refernce, position.


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Photo © Martin Boschhuizen - AirTeamImages



the three "balls" form a triangle, with the center white ball sitting a few centimeters in front of the others.
The correct position is obtained by adjusting your seat, so that the red ball covers the white ball ( or the other way around, depending on what ball comes first).
the resulting eye level should be appr. in the center of the forward windshield.

or you just adjust your seat, so you sit comfortable...  Smile/happy/getting dizzy

hope that helps,

Denis



That's it! You people have stood in my way long enough. I'm going to clown college!
User currently offlineSabenapilot From Belgium, joined Feb 2000, 2714 posts, RR: 47
Reply 3, posted (9 years 12 months 2 days 17 hours ago) and read 6671 times:

It is a visual aid to help you to take the correct seating position.

The trick is to adjust your seat in such a way that the white ball completely covers the read ball when you look at it, just like the moon covers the sun during an eclipse.

That way your eye height is perfect to allow both a good scan of the instruments as well as an optimal look on the outside world, which is especially important during low visibility landings and taxiing when longer distance visibility is reduced.



User currently offlineDeltaGuy From , joined Dec 1969, posts, RR:
Reply 4, posted (9 years 12 months 2 days 15 hours ago) and read 6602 times:

They're pretty visable on the B727....

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Photo © Manas Barooah


Right on the center column between the Capt and F/O's windscreens...those little red balls you see there. Just keep adjusting the seat until you have the balls lined up.

DeltaGuy


User currently offlineQ330 From Australia, joined Dec 2003, 1460 posts, RR: 22
Reply 5, posted (9 years 12 months 2 days 14 hours ago) and read 6559 times:

Ah, ok. Thanks for the answers everyone!

But here's another question: how come the 777 doesn't have a similar seat adjustment aid in the same place? I assume it does have something like that but where is it?


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Photo © Frans Zwart - Dutch Ops



-Q



Long live the A330!
User currently offlineEjazz From United Arab Emirates, joined May 2002, 718 posts, RR: 34
Reply 6, posted (9 years 12 months 2 days 12 hours ago) and read 6508 times:

Markings are on top of the rudder adjustment handle.

Cheers



Etihad Girl, You're a great way to fly.
User currently offlineYousef727 From Denmark, joined Apr 2004, 22 posts, RR: 0
Reply 7, posted (9 years 12 months 2 days 8 hours ago) and read 6359 times:

Could you please show where the rudder adjustment handle is in the 777

thanks



Aviation all the way.......
User currently offlineDC-10tech From United States of America, joined Jun 2001, 298 posts, RR: 2
Reply 8, posted (9 years 12 months 1 day 18 hours ago) and read 6151 times:

Look in front of the yoke. You'll see it. He's talking about the pedal adjustment crank (handle is stowed). Used by short guys like myself to bring the pedals up closer to your feet.


Forums.AMTCentral.com
User currently offlineQ330 From Australia, joined Dec 2003, 1460 posts, RR: 22
Reply 9, posted (9 years 12 months 1 day 17 hours ago) and read 6145 times:

Am I missing something? How does the rudder pedal adjustment handle help with correct seat adjustment?

-Q



Long live the A330!
User currently offlineFritzi From United Arab Emirates, joined Jun 2001, 2762 posts, RR: 2
Reply 10, posted (9 years 12 months 1 day 14 hours ago) and read 6103 times:

The markings are on top of the rudder adjustment crank casing (white)

/fritzi

EDIT: I somehow managed to misread the above posts three times.

[Edited 2004-04-22 13:59:02]

User currently offlineAirplay From , joined Dec 1969, posts, RR:
Reply 11, posted (9 years 12 months 1 day 9 hours ago) and read 5999 times:

The balls are commonly referred to as "ERP" balls or Eye Reference Point balls. They give the flightcrew a means to position their eyes (not their assess) to the "design eye position" or DEP. The DEP is the established optimum point at which the pilot(s) must have his/her eyes to meet various landing criteria.

Heads-up guidance systems must be referenced to the DEP. So must other devices that the pilot must have in view while looking forward out the windscreen.

I don't know about the 777, but it seems unlikely they would chose to install the ERP balls in a place that you won't see while you are looking out the windscreen during an approach....

Is there a chance the answers regarding the 777 are wrong?



User currently offlineStarlionblue From Greenland, joined Feb 2004, 16908 posts, RR: 67
Reply 12, posted (9 years 12 months 20 hours ago) and read 5809 times:

The placement lower than the windscreen will not affect how high your chair needs to go in order to get the correct "eye altitude". As I understand it, the ERPs are just there for initial adjustment, when you sit down, so they don't need to be conspicuously in your line of sight. Or maybe I'm wrong here...


"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineAirplay From , joined Dec 1969, posts, RR:
Reply 13, posted (9 years 12 months 8 hours ago) and read 5689 times:

The placement lower than the windscreen will not affect how high your chair needs to go in order to get the correct "eye altitude".

The placement of your seat should not (and is not) dependant on the design eye position. The pilot’s seat position is based primarily on optimum reach of controls. (Rudder, control column etc.) The design eye position is associated with the placement of the pilot’s head. How can a pilot pivot his head down to reference his eyes to a cue in the panel, and then look up out of the windscreen and expect to maintain any sort of meaningful reference?

ERP balls are positioned where they are for a reason. The pilot should be able to monitor the ERP balls during an approach as he looks out the forward windscreen.


User currently offlineToni_ From Cape Verde, joined Apr 2002, 91 posts, RR: 0
Reply 14, posted (9 years 11 months 3 weeks 6 days 10 hours ago) and read 5471 times:

Hi guys.

Now I've never been inside a 777 cockpit before, but I expected to find those reference points balls located on same spot as on the 744.
As shown here:

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Photo © Steven Filipowicz



I viewed some 777 Flight deck shots, and the only thing I noticed was the little red spot near the standby compass.

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Photo © Andreas F. Daemmig


On other shots the spot wasn't as red as this one. Maybe because from photographer's view the alignment is quite close to desired angle???

Greetings,

Toni


User currently offlineDAirbus From United States of America, joined Nov 2003, 591 posts, RR: 2
Reply 15, posted (9 years 11 months 3 weeks 5 days 23 hours ago) and read 5361 times:
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Here is an excerpt from a 777 operations manual. I was not able to copy the attached diagram but the text gives you a good idea on how the adjustment procedure works.
.
Pilot Seat Adjustment

1. Adjust the seat to the upright position; sitting up straight, looking straight
ahead.

2. The control column must be in the neutral position.

3. Adjust the seat until:
  • the top of the glareshield appears as the edge of a plane, and

  • the crosshairs on the top of the rudder pedal adjustment crank housing line up with the top of the control column.


  • Regards



    "I love mankind. It's people I can't stand." - Charles Shultz
    User currently offlineQ330 From Australia, joined Dec 2003, 1460 posts, RR: 22
    Reply 16, posted (9 years 11 months 3 weeks 5 days 18 hours ago) and read 5330 times:

    Thanks for the answer, DAirbus!

    -Q



    Long live the A330!
    User currently offlineDAirbus From United States of America, joined Nov 2003, 591 posts, RR: 2
    Reply 17, posted (9 years 11 months 3 weeks 5 days ago) and read 5204 times:
    Support Airliners.net - become a First Class Member!

    You are quite welcome Q. Glad to help.


    "I love mankind. It's people I can't stand." - Charles Shultz
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