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Various Questions In One Post  
User currently offlineCoolGuy From United States of America, joined Jan 2005, 414 posts, RR: 0
Posted (7 years 7 months 3 weeks 5 days 10 hours ago) and read 1829 times:

I have a few questions that I thought would be best bundled together in a single post:

There is a single piece of metal sticking out of the wing of a 737-500, and isn't one of the vortex generators. It has a little hole in it. What is that?
At CLE, runway 11/29 is often used as a taxiway when taking off from 24L (at least on the flights that I am on). How common is it to use inactive runways as taxiways?
Also, at CLE, do planes sometimes use the outer runway of 6L/24R and 6R/24L to takeoff? Maybe they did before the newest runway was built?
One more at CLE, why is there an X on 6C/24C? It makes sense that it's not used anymore but I guess it's now completely closed.
Are two flights ever in the air with the same callsign? What if, for example, DL1 SFO-IAD is still in the air but DL1 IAD-CDG is ready to go?
Why is ETOPS written on the front wheel panel? (I know what ETOPS is but why is it written on aircraft?)

11 replies: All unread, jump to last
 
User currently offlineKELPkid From United States of America, joined Nov 2005, 6428 posts, RR: 3
Reply 1, posted (7 years 7 months 3 weeks 5 days 6 hours ago) and read 1794 times:

Quoting CoolGuy (Thread starter):
One more at CLE, why is there an X on 6C/24C? It makes sense that it's not used anymore but I guess it's now completely closed.

That's officially what the "X" means...it's no longer a usable runway.



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineStar_world From Ireland, joined Jun 2001, 1234 posts, RR: 0
Reply 2, posted (7 years 7 months 3 weeks 5 days 5 hours ago) and read 1782 times:

Quoting CoolGuy (Thread starter):

There is a single piece of metal sticking out of the wing of a 737-500, and isn't one of the vortex generators. It has a little hole in it. What is that?

I believe this is for securing a harness to somebody for when they are working on the wing during maintenance.

Quoting CoolGuy (Thread starter):

At CLE, runway 11/29 is often used as a taxiway when taking off from 24L (at least on the flights that I am on). How common is it to use inactive runways as taxiways?

Pretty common, they do the same in LGW all the time for example on the smaller (rarely used) runway. There's no good reason not to use an inactive runway as long as it's safe.

Quoting CoolGuy (Thread starter):

Are two flights ever in the air with the same callsign? What if, for example, DL1 SFO-IAD is still in the air but DL1 IAD-CDG is ready to go?

They will assign a different callsign to one of the flights, or append a letter or number to it. You often hear this if you're listening to ATC or Ch9 on UA.

Quoting CoolGuy (Thread starter):
Why is ETOPS written on the front wheel panel? (I know what ETOPS is but why is it written on aircraft?)

This is so the ground crew can easily see that it's an ETOPS a/c. There are some different maintenance procedures that need to be followed for these aircraft.


User currently offlineKELPkid From United States of America, joined Nov 2005, 6428 posts, RR: 3
Reply 3, posted (7 years 7 months 3 weeks 5 days 4 hours ago) and read 1778 times:

Quoting Star_world (Reply 2):
Quoting CoolGuy (Thread starter):

There is a single piece of metal sticking out of the wing of a 737-500, and isn't one of the vortex generators. It has a little hole in it. What is that?

I believe this is for securing a harness to somebody for when they are working on the wing during maintenance.

Some airlines who operate overwater have something very similar looking, usually with two holes and painted yellow, that are there as a tie-off point for a liferaft in the event of a water ditching.



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9826 posts, RR: 52
Reply 4, posted (7 years 7 months 3 weeks 5 days 4 hours ago) and read 1768 times:

Quoting CoolGuy (Thread starter):
How common is it to use inactive runways as taxiways?

It can be common. A good number of airports do it. For one reason, for an inexperienced crew, it is very easy to identify a runway so that planes don't end up on the wrong taxiway. I've seen crosswind runways used as regular taxiways when they are not in service. IND's crosswind runway is more often serves as a taxiway than an actual runway even though pilots prefer it since it is close to the terminal.

Quoting CoolGuy (Thread starter):
Are two flights ever in the air with the same callsign? What if, for example, DL1 SFO-IAD is still in the air but DL1 IAD-CDG is ready to go?

They could add a letter or completely change the call sign. Often you'll hear flight numbers that are larger than typical for cases such as this.

Quoting CoolGuy (Thread starter):
Why is ETOPS written on the front wheel panel? (I know what ETOPS is but why is it written on aircraft?)

It is for crews to identify which planes are ETOPS. ETOPS planes require special maintenance procedures, so rather than having to know which plane is which based on tail numbers, it makes crews aware. It is not required and only some airlines on some planes paint the words on the gear.



If you have never designed an airplane part before, let the real designers do the work!
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 5, posted (7 years 7 months 3 weeks 4 days 22 hours ago) and read 1713 times:

Quoting CoolGuy (Thread starter):

There is a single piece of metal sticking out of the wing of a 737-500, and isn't one of the vortex generators. It has a little hole in it. What is that

The Tie point for the Escape rope used as hand hold/holding hook point for the Life Raft.depeding on type..

Quoting CoolGuy (Thread starter):
At CLE, runway 11/29 is often used as a taxiway when taking off from 24L (at least on the flights that I am on). How common is it to use inactive runways as taxiways?

If its Inactive its commonly used.If the path is suitable.

Quoting CoolGuy (Thread starter):
Are two flights ever in the air with the same callsign? What if, for example, DL1 SFO-IAD is still in the air but DL1 IAD-CDG is ready to go?

The probability is rare.

Quoting CoolGuy (Thread starter):
Why is ETOPS written on the front wheel panel? (I know what ETOPS is but why is it written on aircraft?)

ETOPS Aircraft undergo more stringint checks & has crtain added equipment.Its a reminder.

regds
MEL



Think of the brighter side!
User currently offlineScooter01 From Norway, joined Nov 2006, 1214 posts, RR: 8
Reply 6, posted (7 years 7 months 3 weeks 4 days 19 hours ago) and read 1692 times:
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Quoting CoolGuy (Thread starter):
There is a single piece of metal sticking out of the wing of a 737-500, and isn't one of the vortex generators. It has a little hole in it. What is that?



Quoting KELPkid (Reply 3):
a tie-off point for a liferaft in the event of a water ditching.



Quoting HAWK21M (Reply 5):
The Tie point for the Escape rope used as hand hold/holding hook point for the Life Raft.depeding on type..

How long do you think it would take before the aircraft or the wing would sink? I would be wery careful to tie a liferaft to something that might pull it down with it.

My guess would be that it functions as a "lift-ring"

Scooter



"We all have a girl and her name is nostalgia" - Hemingway
User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 7, posted (7 years 7 months 3 weeks 4 days 17 hours ago) and read 1675 times:

Quoting Scooter01 (Reply 6):
How long do you think it would take before the aircraft or the wing would sink? I would be wery careful to tie a liferaft to something that might pull it down with it.

The Raft has a shear section that will break with load.Its to prevent the rank floating away during evacuation on water.But it depends on the type of Aircraft too.
regds
MEL



Think of the brighter side!
User currently offlineTristarSteve From Sweden, joined Nov 2005, 4072 posts, RR: 33
Reply 8, posted (7 years 7 months 3 weeks 4 days 16 hours ago) and read 1664 times:

When you remove the emergency exit on a B735, there is a rope coiled up inside the window frame cut out. The idea is that the first person out takes the rope and clips it to the ring to provide a handhold for the following pax. I wonder if it has ever been used!

User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 9, posted (7 years 7 months 3 weeks 4 days 14 hours ago) and read 1638 times:

Quoting TristarSteve (Reply 8):
I wonder if it has ever been used!

Practically in an Emergency evacuation only a staff member would do that.The rest will want to get on safe terrain asap.
regds
MEL



Think of the brighter side!
User currently offlineXJRamper From United States of America, joined Dec 2003, 2473 posts, RR: 51
Reply 10, posted (7 years 7 months 3 weeks 4 days 13 hours ago) and read 1629 times:

Quoting CoolGuy (Thread starter):
One more at CLE, why is there an X on 6C/24C? It makes sense that it's not used anymore but I guess it's now completely closed.



Quoting KELPkid (Reply 1):
That's officially what the "X" means...it's no longer a usable runway.

Where is/are the X('s)? If there are only two X's on the whole runway...then its just temporarily closed. But if there are X's every 1000 feet, then its permanently closed. DTW has a runway temp (for an indefinite amount of time) closed that is solely used for taxi.

Quoting CoolGuy (Thread starter):
Are two flights ever in the air with the same callsign? What if, for example, DL1 SFO-IAD is still in the air but DL1 IAD-CDG is ready to go?

Good example of this is UAL 902. Its routing is DEN-IAD; IAD-MUC. Its callsign from IAD to MUC is UAL 902. However, the callsign from DEN-IAD is UAL 8132.

XJR



Look ma' no hands!
User currently offlineCoolGuy From United States of America, joined Jan 2005, 414 posts, RR: 0
Reply 11, posted (7 years 7 months 3 weeks 4 days 13 hours ago) and read 1628 times:

Thanks everyone! I can always count on everyone here to discuss my favorite hobby!

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