Search found 10 matches

by CoronadoConrad
Tue May 19, 2020 9:42 pm
Forum: Technical/Operations
Topic: McDonnell Douglas PA system
Replies: 1
Views: 1187

Re: McDonnell Douglas PA system

Interference from the 400Hz AC system, aircraft with better shielding/filtering might not make this sound over the PA.

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by CoronadoConrad
Fri Apr 24, 2020 12:23 am
Forum: Civil Aviation
Topic: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020
Replies: 236
Views: 51260

Re: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020

Since at least 2011 ;) Seriously the plane has always been inside the hanger behind closed doors when not on duty Michael Yes I understand that but it hasn’t flown since 2018 hence why I ask, wondering if it has been withdrawn from use. It's now the reserve of the reserve as you got both B-2479 and...

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by CoronadoConrad
Thu Apr 23, 2020 11:18 am
Forum: Civil Aviation
Topic: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020
Replies: 236
Views: 51260

Re: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020

Inside the AMECO hanger in PEK as it always was when it was the VIP ship. Michael Since NOV 2018? Thanks for the information. Since at least 2011 ;) Seriously the plane has always been inside the hanger behind closed doors when not on duty Michael Yes I understand that but it hasn’t flown since 201...

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by CoronadoConrad
Wed Apr 22, 2020 10:12 pm
Forum: Civil Aviation
Topic: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020
Replies: 236
Views: 51260

Re: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020

eamondzhang wrote:
CoronadoConrad wrote:
What ever happened to B-2472? Where is it stored?

Inside the AMECO hanger in PEK as it always was when it was the VIP ship.

Michael

Since NOV 2018? Thanks for the information.

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by CoronadoConrad
Wed Apr 22, 2020 8:54 am
Forum: Civil Aviation
Topic: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020
Replies: 236
Views: 51260

Re: Boeing 747-400 Passenger Fleet Tracking/Retirements Thread - 2020

What ever happened to B-2472? Where is it stored?

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by CoronadoConrad
Mon Jul 15, 2019 11:30 am
Forum: Technical/Operations
Topic: Delta 747 Question
Replies: 10
Views: 2908

Re: Delta 747 Question

johns624 wrote:
Sure it doesn't have to do with the chemtrail nozzles???

Thanks for the contribution.

CoronadoConrad

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by CoronadoConrad
Mon Jul 15, 2019 8:45 am
Forum: Technical/Operations
Topic: Delta 747 Question
Replies: 10
Views: 2908

Re: Delta 747 Question

P&W has certified in 1993 a Phase 3 reduced pressure combuster on the PW4056, as installed at the 747-400 series. The smoke number was original 18,4 (100,2% of the Original limit) After this modification the smoke number was reduced to 10,9% (59,4% of the limit.) See : https://www.easa.europa.e...

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by CoronadoConrad
Sat Jul 13, 2019 10:47 am
Forum: Technical/Operations
Topic: Delta 747 Question
Replies: 10
Views: 2908

Re: Delta 747 Question

strfyr51 wrote:
yes there were fuel nozzle upgrades that eliminated the smoke trail. And United did the upgrades in our shops

Thanks for that. Do you know more about what specifically was improved in the newer fuel nozzles? Did they further atomise the mixture?

CoronadoConrad

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by CoronadoConrad
Sun Jul 07, 2019 11:46 pm
Forum: Technical/Operations
Topic: Delta 747 Question
Replies: 10
Views: 2908

Re: Delta 747 Question

Jets don’t have carburetors, so they don’t “run rich”. OK I should have said "for lack of a better technical term". Visible particulate matter from inefficient combustion. And the poster above yes I understand that its probably somewhat related to the design of the PW4000 just the Delta o...

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by CoronadoConrad
Sun Jul 07, 2019 2:35 am
Forum: Technical/Operations
Topic: Delta 747 Question
Replies: 10
Views: 2908

Delta 747 Question

Hello guys. I have a question regarding Delta/Northwest 747s. I was wondering why their engines seem to have consistently run a bit richer than other operators? They seemed to be almost like B-52's taking off. I found a few videos to highlight what I am talking about. https://youtu.be/tQqqmSBr2XA?t=...

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