audidudi
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Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 4:51 pm

There is currently a Yellow Alert at OAK right now for WN2547, N7709A, which departed for MDW at 06.12 and is currently circling to burn off fuel. It apparently has a landing gear problem.

http://www.flightradar24.com/SWA2547/8592109

[Edited 2015-12-23 08:54:48]

[Edited 2015-12-23 08:57:25]
 
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dabpit
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 4:57 pm

What is a Yellow Alert?
Carpe Diem
 
SonomaFlyer
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:00 pm

Better than a RED ALERT!
 
badgervor
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:10 pm

Appears to be holding off the Manteca VOR (ECA)

http://flightaware.com/live/flight/SWA2547
 
kbmiflyer
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:29 pm

Wow, it has made at least 18 loops so far. Wonder how many more before they burn off enough fuel. 3 hours going in circles with a possible plane issue has to be stressful for the passengers. The plane was schedule to land at MDW at 11:55, so you think they would land pretty soon.
 
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nikeson13
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:45 pm

Just left hold, descending towards OAK.
Nikolas
 
audidudi
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:45 pm

ATC just advised the ground units that she's landing in 10 mins!
 
audidudi
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:56 pm

She just did a fly-by the tower and all appears to look normal!

[Edited 2015-12-23 09:58:02]
 
kbmiflyer
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:58 pm

Deleted - prior post was edited

[Edited 2015-12-23 09:58:58]
 
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Siren
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 5:58 pm

Deleted... Mods Please delete

[Edited 2015-12-23 10:01:44]
 
jporterfi
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:01 pm

The aircraft executed a low approach so ATC could check for a possible blown tire. OAK Tower and an aircraft holding short of the runway reported that they didn't see anything unusual. The aircrafft is now executing a missed approach.
PPC (ASEL) | Aircraft Flown: PA28, C172, DA20
 
AWACSooner
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:01 pm

Based upon FR24, it looks like she did a low approach to verify the gear was down.
 
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nickflightx
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:06 pm

It's live on ABC7, it looks like though the nose gear may be sideways, can't tell though.
 
audidudi
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:08 pm

One Bay Area TV station is reporting that a front tyre has blown.
 
audidudi
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:15 pm

Perfect landing! Great news!
 
StrandedAtMKG
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:15 pm

While on one level I understand the edict to stay close to an airport, what is the advantage to circling OAK for three hours instead of just continuing on to MDW? You're going to have a tough landing anyway, and it seems like you may as well complete the flight first. There are certainly plenty of suitable diversion airports between OAK and MDW if you ended up needing one.
 
AWACSooner
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:15 pm

She's down...non-event...safe landing
 
kbmiflyer
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:18 pm

Quoting StrandedAtMKG (Reply 15):
While on one level I understand the edict to stay close to an airport, what is the advantage to circling OAK for three hours instead of just continuing on to MDW? You're going to have a tough landing anyway, and it seems like you may as well complete the flight first

Speculating here, but if they had a landing gear issue they would not have retracted the landing gear. That would have prevented them from flying to MDW with the increased drag of the landing gear being exposed. Also, even if they could have made it to Chicago, they likely would have had to divert to ORD since MDW runway's are so short
 
apfpilot
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:41 pm

Quoting StrandedAtMKG (Reply 15):
While on one level I understand the edict to stay close to an airport, what is the advantage to circling OAK for three hours instead of just continuing on to MDW? You're going to have a tough landing anyway, and it seems like you may as well complete the flight first. There are certainly plenty of suitable diversion airports between OAK and MDW if you ended up needing one.

My guess would be that you don't know what other damage the tire caused when it shred the tread. Could have damaged something in the nose gear assembly. A piece of tread could have smacked a slat or a flap track or the undercarriage, could be stuck in the horizontal stab. Why take that risk?
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Brick
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:46 pm

At least the media didn't report that he plane is circling "dumping fuel".
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N766UA
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 6:47 pm

LOL what is a yellow alert?!
 
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FredrikHAD
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 8:01 pm

Quoting N766UA (Reply 20):
what is a yellow alert

Rescue services use colors green, yellow and red for alert status. Green is obviously for "no alert" and red for an actual accident. Yellow is like "hot stand-by" where trucks are manned, ready to roll any second. A pending landing with an identified problem with the potential to cause an accident or a plane that goes missing near an airport are examples of yellow alerts.

/Fredrik
 
apfpilot
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 8:07 pm

Quoting FredrikHAD (Reply 21):

Rescue services use colors green, yellow and red for alert status. Green is obviously for "no alert" and red for an actual accident. Yellow is like "hot stand-by" where trucks are manned, ready to roll any second. A pending landing with an identified problem with the potential to cause an accident or a plane that goes missing near an airport are examples of yellow alerts.

When I worked in Airport Ops (granted this was almost 8 years ago) we had Alert 1, 2, and 3 from least severe to most. The only color we used was Code Red for lightening in the area and ramp being closed, and code Pink but that wasn't an official term  
Opinions are my own and do not reflect an endorsement or position of my employer.
 
nkops
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 8:08 pm

Quoting FredrikHAD (Reply 21):
Rescue services use colors green, yellow and red for alert status.

Never heard of that , we use Alert 1,2 or 3
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fsnuffer
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 8:27 pm

Quoting StrandedAtMKG (Reply 15):
While on one level I understand the edict to stay close to an airport, what is the advantage to circling OAK for three hours instead of just continuing on to MDW? You're going to have a tough landing anyway, and it seems like you may as well complete the flight first. There are certainly plenty of suitable diversion airports between OAK and MDW if you ended up needing one.

Don't know the particulars about this incident but the emergency procedure for a blown tire in a T-43 (B-737) was not to raise the gear. USAF lost a T-43 when the gear was retracted after blowing a tire. The rotating tire with shreds tore loose the hydraulic lines in the wheel well and the hydraulic fluid ignited when it hit the hot breaks. Again, our EP was to hit the call button and say "Pilot the gear" when we thought we blew a tire on take off and we would then proceed to hold with our gear down until we could burn off enough fuel.

So to make a short story long, it would be a very long flight from OAK to MDW with the gear down.
 
badgervor
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 8:35 pm

All the talk of a blown tire makes me think of this incident...

http://www.youtube.com/watch?v=_66mlsFwB9I
 
KELPkid
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 9:12 pm

Quoting nickflightx (Reply 12):
It's live on ABC7, it looks like though the nose gear may be sideways, can't tell though.

It couldn't have been. The B737, unlike the A320, does not pivot the nose gear 90 degrees before retraction. The gear system probably has something in it to guarantee that the nosewheel is straight before retraction (like if, for example, crosswind correction was being applied with the rudder pedals during the takeoff roll).

So, on another note, did the aircraft arrive on 6 good tires? What triggered this-a gear unsafe indication?
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as739x
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 10:01 pm

Quoting StrandedAtMKG (Reply 15):

Pilots land when they have an emergency of a mechanical issue, period. There are rules to adhere to.

As said above, if one of the gears was not retracting then you have a tremendous amount of drag and don't have the fuel, unable to keep speed required on airways, etc. The max gear extension alone would prevent this as its only around 270kts I believe

Quoting nkops (Reply 23):
Quoting apfpilot (Reply 22):
Quoting FredrikHAD (Reply 21):

Different airports use different Alert Systems. But all the same that each level is different in levels of emergency.
"Some pilots avoid storm cells and some play connect the dots!"
 
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FredrikHAD
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RE: Yellow Alert At OAK For WN2547

Wed Dec 23, 2015 11:03 pm

Quoting as739x (Reply 27):
Different airports use different Alert Systems. But all the same that each level is different in levels of emergency.

Seems like a hazzle in the US with different codes for different airports! In Sweden we used the red/yellow/green system during my short time as an airport firefighter and I know it was the same for all airports in the country at that time.

Quote from:

http://forums.radioreference.com/cal...llow-alert-aircraft-emergency.html

"I can speak for Oakland Airport, as I worked in the control tower there for a number of years. A Yellow Alert is used when an air carrier type aircraft is coming in for a landing with some sort of problem. You must have heard Alameda FD being dispatched this afternoon. They roll to assist the OFD to stand by in case the plane crashes. Now, an actual crash is a Red Alert. On the North Field, where smaller planes fly, you will hear Alert 1 for an inbound emergency and Alert 2 for an actual crash. Most Yellow Alerts are for airliners with flap problems, hydraulic problems, bad gear indication, etc. "

Practically the same airfield, and still different terminology. Amazing!

/Fredrik
 
flightsimer
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RE: Yellow Alert At OAK For WN2547

Thu Dec 24, 2015 7:09 am

Quoting KELPkid (Reply 26):

The A320 does not pivot the nose landing gear in the retraction. The JetBlue incident was a failure that caused the landing gear to deflect the full 90 or so degrees of motion.

https://youtube.com/watch?v=87QsjhGGRnU
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