Technical Trivia

MX757 · Sat Apr 08, 2006 12:42 am

Okay everybody it's time to have some fun! Test your knowledge with some little known and very unimportant facts.

I'll start this off with this little question.

What is the "La Guardia bend" mean when pertaining to the 767? scratchchin

Please feel free to add any Technical Triva questions you like.

hangarrat · Sat Apr 08, 2006 1:22 am

Well, I'm dying to know. It's a Google-proof question.

I'm going to guess that it has something to do with planting a 767 firmly on the numbers of one of LGA's short runways and the resulting change in the shape of the aircraft.

aogdesk · Sat Apr 08, 2006 1:58 am

Hhmmm....since I have absolutely no clue, I'm going to pick on MX757 as the King of Useless Trivia..... Smile

But I'll anxiously await both the answer and the next question.

Dalmd88 · Sat Apr 08, 2006 3:50 am

LGA in someplaces is built on piers. To spread out the weight load the gear on the 767 is bent.

aogdesk · Sat Apr 08, 2006 6:57 am

Would it happen to be the shape that the 767 conforms to after a trip up the ski ramp at LGA?? lol

deltamike172 · Sat Apr 08, 2006 7:36 am

Well, I don't know if the correct answer is up there, but I'll throw down Question #2:

What is an ATCAA?

-DM

fr8mech · Sat Apr 08, 2006 9:38 am

The LaGuardia bend can also be called the SFO bend. The B767-100 could not land at either LGA or SFO because of runway loading. In order to alleviate this problem Boeing and I believe Goodrich redisgned the gear so that the gear footprint is wider. This added width caused a clearance problem in the wing root. Hence the little pop-up door on top of the wing. As the gear cycles, the top of the strut passes through the door.

DL_Mech · Sat Apr 08, 2006 9:40 am

Question #3:

How do you put a 767 on Ground Service power from the cockpit? Let's assume external power is on the A/C and the switch on the F/A panel is not used.

[Edited 2006-04-08 02:41:48]

MX757 · Sat Apr 08, 2006 2:49 pm

Quoting DALMD88 (Reply 3):
LGA in someplaces is built on piers. To spread out the weight load the gear on the 767 is bent.

Quoting Fr8Mech (Reply 6):
The LaGuardia bend can also be called the SFO bend. The B767-100 could not land at either LGA or SFO because of runway loading. In order to alleviate this problem Boeing and I believe Goodrich redisgned the gear so that the gear footprint is wider. This added width caused a clearance problem in the wing root. Hence the little pop-up door on top of the wing. As the gear cycles, the top of the strut passes through the door.

Bingo! Give these guys a fish! Big grin

MX757 · Sat Apr 08, 2006 3:04 pm

Quoting Dl_mech (Reply 7):
Question #3:

How do you put a 767 on Ground Service power from the cockpit? Let's assume external power is on the A/C and the switch on the F/A panel is not used.

This is a good one! I'm even cheating using the D&O and system schematics manuels and I have yet to find it! I'm going to have to research some more.

You are talking about ground service and not ground handling right?

dl757md · Sat Apr 08, 2006 8:12 pm

Quoting Dl_mech (Reply 7):
How do you put a 767 on Ground Service power from the cockpit?

OK. I give up. Do tell.

DL_Mech · Sun Apr 09, 2006 12:43 am

Quoting Dl757md (Reply 10):
OK. I give up. Do tell

Assume external power is already powering the A/C.

1) Place throttles full forward.

2) Turn off Stby power and External Power from the Cockpit panel.

3) Return Throttles to idle.

The plane is now on Ground Service.

This works on DL's 767's and may not work on other configurations (not sure about 764). I tried it on a 757 and it didn't work. I was shown this at work by someone who was shown by an instructor. Sorry, I don't have a manual reference. I thought it was pretty cool.

[Edited 2006-04-08 17:46:28]

AvionicMech · Sun Apr 09, 2006 12:50 am

Quoting Dl_mech (Reply 11):
Assume external power is already powering the A/C.

1) Place throttles full forward.

2) Turn off Stby power and External Power from the Cockpit panel.

3) Return Throttles to idle.

The plane is now on Ground Service.

This works on DL's 767's and may not work on other configurations (not sure about 764). I tried it on a 757 and it didn't work. I was shown this at work by someone who was shown by an instructor. Sorry, I don't have a manual reference. I thought it was pretty cool.

Wow I am impressed!!! haha. I think I will have to try this one next week at work. It must be something to do with the shedding of the Utility Busses with the advancing of the throttles.

kaddyuk · Sun Apr 09, 2006 6:15 am

When running the A340 from the Batteries, how can you show the APU Status page on ECAM?

onetogo · Sun Apr 09, 2006 10:23 am

Quoting Deltamike172 (Reply 5):
Well, I don't know if the correct answer is up there, but I'll throw down Question #2:

What is an ATCAA?

-DM

Air Traffic Control Assigned Airspace. It's amazing what you'll learn at the Cheesecake Factory.

HAWK21M · Sun Apr 09, 2006 12:20 pm

Quoting Deltamike172 (Reply 5):
What is an ATCAA

Air Traffic Control Assigned Airspace.

Whats an AFOLTS card.

regds
MEL

Matt72033 · Sun Apr 09, 2006 4:04 pm

Quoting Kaddyuk (Reply 13):
When running the A340 from the Batteries, how can you show the APU Status page on ECAM?

start the APU? wouldnt that bring up the APU page automatically?

kaddyuk · Sun Apr 09, 2006 9:17 pm

Quoting Matt72033 (Reply 16):
start the APU? wouldnt that bring up the APU page automatically?

Hillarious... What if you've Just shut down the APU and you have no ground power? The ECAM screen goes blank because its not part of the "essential" instruments and the batteries are shedding all non-essential loads...

There is a trick to bring up the APU status page so you can monitor the shutdown...

Matt72033 · Sun Apr 09, 2006 10:35 pm

Quoting Kaddyuk (Reply 17):
Hillarious... What if you've Just shut down the APU and you have no ground power? The ECAM screen goes blank because its not part of the "essential" instruments and the batteries are shedding all non-essential loads...

how do you do it then? and why would you do it? i can't really see a point to it!

kaddyuk · Mon Apr 10, 2006 1:36 am

Quoting Matt72033 (Reply 18):
how do you do it then? and why would you do it? i can't really see a point to it!

You press and hold the APU button on the ECAM Selector panel on the centre console...

The point to it is, you ensure that the engine is spooling down correctly, if you had a sudden rise in EGT or erratic N1 Speeds... you would know that something was wrong with the APU Wink

VC-10 · Mon Apr 10, 2006 2:14 am

In reality the point is to see when the Inlet Flap closes so you can turn the batts off.

The ECB will monitor the shutdown & flag any faults next time it is switched on.

Q4. What is a Denver Go Vlv?

Q5. Where would you find a Wiffletree?

Q6. On what system would you find the smallest dia cable on a DC10 and what is the dia?

kaddyuk · Mon Apr 10, 2006 2:33 am

Quoting VC-10 (Reply 20):
the point is to see when the Inlet Flap closes so you can turn the batts off.

I knew that... Wink

MX757 · Tue Apr 11, 2006 1:28 am

Quoting HAWK21M (Reply 15):
Whats an AFOLTS card.

Since I don't have a MM in front of me I'm going to shoot this one from the hip.

I remember T/S an EICAS status message on a 757 last year.

The AFOLTS card deals with engine fire detection faults and warning on the 757. I do believe they are located in P-50 box in the E&E.

So, how did I do?

AvionicMech · Tue Apr 11, 2006 2:30 am

Yeah AFOLTS is the fire detection system but I can't remember if it is P50 or P51 that the cards are in, but it is obvious when you look at them because it says something like Fire Detection Cards on the front. Yeah sure

But you have to be careful because there are two different detection systems on the RB-211 engines and the AFOLTS cards are not interchangeable.

kaddyuk · Tue Apr 11, 2006 3:23 am

Which instrument in the cockpit can be used to listen to commercial radio stations?

AvionicMech · Tue Apr 11, 2006 3:35 am

Quoting Kaddyuk (Reply 24):
Which instrument in the cockpit can be used to listen to commercial radio stations?

Thats an easy one!!! The ADF can be tuned to MW stations such as 909 (Radio 5 Live) for the sport when you are working in the flightdeck. Big grin

FDXmech · Tue Apr 11, 2006 3:35 am

Quoting Kaddyuk (Reply 24):
Which instrument in the cockpit can be used to listen to commercial radio stations?

ADF.

HAWK21M · Tue Apr 11, 2006 3:37 am

Quoting MX757 (Reply 22):
So, how did I do

Automatic Fire/Overheat Logic/Test System card

Quoting Kaddyuk (Reply 24):
Which instrument in the cockpit can be used to listen to commercial radio stations

ADF.

regds
MEL

KELPkid · Tue Apr 11, 2006 3:44 am

Quoting AvionicMech (Reply 25):
Thats an easy one!!! The ADF can be tuned to MW stations such as 909 (Radio 5 Live) for the sport when you are working in the flightdeck.

You can also use the ADF to locate the transmitter site of your favorite AM station...I have even heard of flight instructors in the area that "invented" their own NDB approaches (for teaching students only) using a few area AM broadcast stations...obviously not something you'd want to use in actual IMC Big grin

HAWK21M · Tue Apr 11, 2006 4:48 am

Which Part on the B737s is called "Elephant Ears".
regds
MEL

AvionicMech · Tue Apr 11, 2006 5:48 am

Quoting HAWK21M (Reply 29):
Which Part on the B737s is called "Elephant Ears".

I can't say that I have heard of that saying before but it has got to be the gear doors which you always hit your head or back on when doing a wheel or brake change on an outboard wheel.

kaddyuk · Tue Apr 11, 2006 5:49 am

Quoting AvionicMech (Reply 25):
Thats an easy one!!! The ADF can be tuned to MW stations such as 909 (Radio 5 Live) for the sport when you are working in the flightdeck.

I'm more of a Captial Gold Man myself...

Cant beat a bit 'o elvis or The beatles... :P

Would knowing where the crew cart & bacon sarnies are located in the galley be thought of as "technical"? Wink

[Edited 2006-04-10 22:50:41]

AvionicMech · Tue Apr 11, 2006 6:12 am

Quoting Kaddyuk (Reply 31):
Would knowing where the crew cart & bacon sarnies are located in the galley be thought of as "technical"?

Of Course it is, but I am thinking more like the ice cream. Wink

kaddyuk · Tue Apr 11, 2006 6:54 am

Quoting AvionicMech (Reply 32):
Of Course it is, but I am thinking more like the ice cream.

Currently you can find marble cake in Galley #2 on flights from the USA and i must tell you... It is to DIE for... :P

AvionicMech · Tue Apr 11, 2006 7:11 am

Quoting Kaddyuk (Reply 33):
Currently you can find marble cake in Galley #2 on flights from the USA and i must tell you... It is to DIE for... :P

Yeah but I am sure your airline probably has slightly better catering that we have. We are usually really happy if we find a couple of chocolate bars and some crackers and cheese from the crew food. Smile

miamiair · Tue Apr 11, 2006 7:21 am

Quoting HAWK21M (Reply 29):
Which Part on the B737s is called "Elephant Ears".

Fairings attached at the inboard end of the inboard mid flap...

KELPkid · Tue Apr 11, 2006 7:41 am

Okay, here's one...

What is the "Cessna Diamond", and how does one go about winning this "award" ?

bigthumbsup

Brent

hangarrat · Tue Apr 11, 2006 8:06 am

The Cessna Diamond: Walk into the trailing edge, and it will appear on your forehead.

Similar to the Cessna dimple, no?

[Edited 2006-04-11 01:16:37]

kaddyuk · Tue Apr 11, 2006 8:07 am

The Cessna Diamond is that award given to the unattentive pilots who happen to make contact with the trailing edge of the wing of a cessna. Forming a neat diamond shaped scar on the forehead... Wink

bri2k1 · Tue Apr 11, 2006 9:53 am

Quoting KELPkid (Reply 28):
obviously not something you'd want to use in actual IMC

...or is it? There's a big tower (850AM, KOA) located not too far from the departure end of runway 10 at APA. On a hot summer day, when a C-172 is going to take a while to climb above the tower clearance height, and there are low clouds, haze, sun glare, or any other obstructions to visibility, it's nice to know the tower isn't directly at 12 o'clock!

HAWK21M · Tue Apr 11, 2006 2:07 pm

Quoting AvionicMech (Reply 34):
Yeah but I am sure your airline probably has slightly better catering that we have

Not as bad as those on Freighters though.No variaty.

Quoting Miamiair (Reply 35):
Fairings attached at the inboard end of the inboard mid flap...

Quoting Kaddyuk (Reply 38):
The Cessna Diamond is that award given to the unattentive pilots who happen to make contact with the trailing edge of the wing of a cessna. Forming a neat diamond shaped scar on the forehead...

How does this look like exactly.What causes the Diamond shape.

regds
MEL

MX757 · Tue Apr 11, 2006 9:45 pm

Quoting Miamiair (Reply 35):
Quoting HAWK21M (Reply 29):
Which Part on the B737s is called "Elephant Ears".

Fairings attached at the inboard end of the inboard mid flap...

Okay, that's a good one.

Here's another one:

What part on the DC-9/MD-80 are called "Elephant Ears"?

Quoting VC-10 (Reply 20):
Q4. What is a Denver Go Vlv?

Q5. Where would you find a Wiffletree?

Q6. On what system would you find the smallest dia cable on a DC10 and what is the dia?

These are some good questions! You got me on all three!

miamiair · Tue Apr 11, 2006 9:56 pm

Quoting MX757 (Reply 41):
What part on the DC-9/MD-80 are called "Elephant Ears"?

Guess would be the Main Gear Wheel Well Doors?

MX757 · Tue Apr 11, 2006 10:33 pm

Quoting Miamiair (Reply 42):
Guess would be the Main Gear Wheel Well Doors?

Nope, guess again.

kaddyuk · Tue Apr 11, 2006 10:40 pm

Quoting HAWK21M (Reply 40):
How does this look like exactly.What causes the Diamond shape.

It looks exactly like a diamond and is caused by the trailing edge of the high wing on most cessna light aircraft Wink

Hahaha!

fr8mech · Tue Apr 11, 2006 11:40 pm

What is:

Sailboat on a B747 (classic).

Doghouse on a B747 (classic).

Donkey Dick on a DC8.

Elephant Ear on a B727.

What is a Plasta-Jet (early term).

kaddyuk · Wed Apr 12, 2006 12:04 am

Quoting Fr8mech (Reply 45):
Sailboat on a B747

Trailing Edge Flap Fairing?

miamiair · Wed Apr 12, 2006 12:08 am

Quoting Fr8mech (Reply 45):
Sailboat on a B747 (classic).

Underwing pylon Fairing

Quoting Fr8mech (Reply 45):
Donkey Dick on a DC8.

Tail Strike Strut

Quoting Fr8mech (Reply 45):
Doghouse on a B747 (classic).

Nacelle Fairing above the engine (Same for the 707)

Quoting Fr8mech (Reply 45):
Elephant Ear on a B727.

Trailing Edge Flap, Inboardmost Jack Screw Fairing

Matt72033 · Wed Apr 12, 2006 12:10 am

Quoting Kaddyuk (Reply 46):
Trailing Edge Flap Fairing?

nope, its rear part of the pylon that splits open

Quoting Fr8mech (Reply 45):
Doghouse on a B747 (classic).

aren't dog houses cabin stowages?

VC-10 · Wed Apr 12, 2006 12:19 am

Quoting Fr8mech (Reply 45):
Sailboat on a B747

The 707 had them aswell

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