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ALASKA AIR EMERGENCY LANDING HAWAII

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ALASKA AIR EMERGENCY LANDING HAWAII

Old 29th Apr 2018, 17:49
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ALASKA AIR EMERGENCY LANDING HAWAII

Alaska Airlines makes emergency landing after engine put into idle mid-flight


Alaska Airlines makes emergency landing after engine put into idle mid-flight | Fox News
An Alaska Airlines plane was forced to make an emergency landing in Honolulu, Hawaii, after pilots throttled down one of the plane's engines.Flight 145 was headed to Hawaii from Seattle when an oil filter bypass light came on in the cockpit. The flight crew idled the engine and declared an emergency, but continued to Honolulu where the flight was originally scheduled to land.
GOES ON ...MID FLIGHT ???

HONOLULU (KHON2) - An Alaska Airlines plane was forced to make an emergency landing in Honolulu after one of its engines was idled after a warning indicator turned on. The Boeing 737-800 landed safely at the Daniel K. Inouye International Airport at 9:50 p.m.

According to State Department of Transportation officials, flight 145 was inbound to Honolulu from Seattle.Alaska Airlines said that an oil filter bypass light illuminated for one of the engines on the plane. Following procedures, the flight crew idled the engine and continued for Honolulu."The captain came on the overhead speaker and just said that they were having overheating of one of the engines so they needed to idle a little bit to try to let it cool off but that were going to have to make a quicker landing than usual. And we were going to have a fire crew ready when we landed just in case. That's about all he said and then he got off quickly," passenger Carrie Mingle said.This was after the plane had already passed the half-way mark from Seattle to Honolulu. "A lot of people on the plane had written emails or texts to their loved ones because they weren't sure what was going to happen," Mingle recalled.

Last edited by CONSO; 29th Apr 2018 at 20:08.
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Old 29th Apr 2018, 17:57
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Well let's be literal here, if it were mid flight, half way there, presumably there's less water infront of you than behind, so the logical answer...
Still, never let a sound decision go unquestioned BY SHOUTING.
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Old 29th Apr 2018, 18:05
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Where else would you

go mid-flight? There‘s an awful lot of water around....it‘s either RTB or press on I would say.
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Old 29th Apr 2018, 18:14
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On another website it was mentioned that the flight was approx 2/3 of the way there. No idea how true that is but if so, it explains the decision to press on.
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Old 29th Apr 2018, 18:17
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Originally Posted by Not Long Now View Post
Well let's be literal here, if it were mid flight, half way there, presumably there's less water infront of you than behind, so the logical answer...
Still, never let a sound decision go unquestioned BY SHOUTING.
Let me know when you find out on this new fubared site how to change font size.
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Old 29th Apr 2018, 18:48
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Originally Posted by CONSO View Post
Let me know when you find out on this new fubared site how to change font size.
Not Long Now's point wasn't about making any font smaller or larger - rather it was that you had found the CAPS LOCK key - and used it!

You also appear to have made full use of that same CAPS LOCK key for your user-name too. A trend or pattern, perhaps?
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Old 29th Apr 2018, 19:04
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I assume that they returned the eng to normal power settings for landing.
Thank Gawd they missed the orphanage, hospital and 'cute puppy farm'!
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Old 29th Apr 2018, 19:48
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Originally Posted by CONSO View Post
Let me know when you find out on this new fubared site how to change font size.
i asked this question in the feedback thread and was told it’s not possible now, supposedly in a future upgrade. However, I think the issue Here was posting in all caps, akin to shouting on this interweb thing. Or so I’m told.
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Old 29th Apr 2018, 19:50
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Originally Posted by eagleflyer View Post
go mid-flight? There‘s an awful lot of water around....it‘s either RTB or press on I would say.
Exactly! There are no alternates between North America and Hawaii so if they were past half way the only reasonable thing to do is keep going (it's also why 180 minute ETOPS is a must to operate between NA and the Hawaiian Islands).
There was a note that Maui would have been a few minutes closer but the difference was so slight they elected to land at the original destination of Honolulu. I suppose the decision to bypass Maui could be nitpicked, but not the decision to continue to the Hawaiian Islands. Oh, and remember, they didn't shut down the engine, just reduced the power.
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Old 29th Apr 2018, 20:02
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Originally Posted by Carbon Bootprint View Post
i asked this question in the feedback thread and was told it’s not possible now, supposedly in a future upgrade. However, I think the issue Here was posting in all caps, akin to shouting on this interweb thing. Or so I’m told.
I copied part of the headline in the article I quoted under the assumption I could later reduce the size- This was to make it easier for some to find the story in other venues. I left out the words mid-ocean deliberately since there seemed to be some conflicting comments as to when the announcement was made versus where they were at the time. I was obviously wrong- mea culpa - first mistake this year

Interesting to note that in two or three years of posting - this is the first complaint re my name being in all caps. sure glad we have some posting/ font size police aboard.Coming soon - the spell police and the acronym police. and do we now need a safe place for those who have been font or CAPS abused ??
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Old 29th Apr 2018, 20:42
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Originally Posted by albatross View Post
I assume that they returned the eng to normal power settings for landing.
Probably not. There are several situations where the preferred procedure with some engines (compressor stalls in a CF6, oil pressure in a J-52) is to reduce power to a stable level and leave it there. The probability of catastrophic failure is reduced if you don't try to change the thrust level.

About 10 years ago I had compressor stalls on a CF6 on a 747 Classic, about 2 hours into a Turkey - Hong Kong flight. Reducing N1 to about 80% worked for a couple hours, then reducing to idle worked for the rest of the flight. UNTIL the F/O who was flying decided he wanted to bring it up to approach thrust on final. Within 15 seconds or so the engine chugged again, and spewed a good portion of our turbine blades into Hong Kong Harbor. On landing roll it started overtemping even at idle, so we shut it down.
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Old 30th Apr 2018, 03:13
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They went for HNL for the longer runway, landed F15 using OEI procedures, engine idled. Replacement engine already arrived via Hercules.
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Old 30th Apr 2018, 08:20
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It might sound simple, but I've sen it cause confusion in the sim. Guys are so programmed to a fixed scenario, leading them into a QRH, and following the instructions. Here there is a hybrid situation. The engine is not providing thrust, but it is not shut down. It does require the 'One engine inoperative landing checklist'. How much of the Engine Failure/Shutdown checklist does it need? Depending on the sharp end experience that can be a simple or confusing discussion. It does require leadership.
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Old 30th Apr 2018, 13:02
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Anyone in this thread know what equal time point (ETP) means?
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Old 30th Apr 2018, 13:13
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Originally Posted by aterpster View Post
Anyone in this thread know what equal time point (ETP) means?
Aterpster It the point in the flight where it takes 10 minutes to get to where your going and 10 minutes to turn around and get back to where you started from.

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Old 30th Apr 2018, 13:41
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Originally Posted by Intruder View Post
Probably not. There are several situations where the preferred procedure with some engines (compressor stalls in a CF6, oil pressure in a J-52) is to reduce power to a stable level and leave it there. The probability of catastrophic failure is reduced if you don't try to change the thrust level.

About 10 years ago I had compressor stalls on a CF6 on a 747 Classic, about 2 hours into a Turkey - Hong Kong flight. Reducing N1 to about 80% worked for a couple hours, then reducing to idle worked for the rest of the flight. UNTIL the F/O who was flying decided he wanted to bring it up to approach thrust on final. Within 15 seconds or so the engine chugged again, and spewed a good portion of our turbine blades into Hong Kong Harbor. On landing roll it started overtemping even at idle, so we shut it down.

I understand your point but according to the report this was an Oil Filter Bypass indication. If there is no associated Chip Light, Oil Press./ Temp fluctuations or other secondary indications would the best course not be to return to normal power for the landing? Just a thought. I have no idea what the ECL for that aircraft states.
However I wasn't there so well done that crew.


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Old 30th Apr 2018, 14:18
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Originally Posted by aterpster View Post
Anyone in this thread know what equal time point (ETP) means?
Could be the same as 'Point of No-Return', but maybe taking into account the time needed to do the 180 turn.
.
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Old 30th Apr 2018, 14:37
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ETP....same time required to press on or turn back.
PNR....point where it is no longer possible to return to your point of departure.
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Old 30th Apr 2018, 15:31
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Originally Posted by scifi View Post
Could be the same as 'Point of No-Return', but maybe taking into account the time needed to do the 180 turn.
.
Nearly right but in the case above only in still air. Equal time point takes into account wind speed and direction. Point of no return involves your fuel state.
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Old 30th Apr 2018, 15:58
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Originally Posted by Pom Pax View Post
Nearly right but in the case above only in still air. Equal time point takes into account wind speed and direction. Point of no return involves your fuel state.
Both ETP and PNR have to take into account wind speed and direction as well as fuel state. Once PNR is reached ETP becomes irrelevant.
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