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Airbus urged to fix A320's electrics.
Flight International Online ^ | 18 December 2006 | David Learmount

Posted on 12/19/2006 9:03:09 AM PST by lowbuck

Airbus has received four recommendations for modifications to its A320 series electrical systems following an incident in which an A319 crew lost voice communications and all the captain's electronic flight instrument system (EFIS) displays. In the absence of these systems the crew had to use the emergency undercarriage deployment system to prepare for landing.

The UK Air Accidents Investigation Branch (AAIB), looking into a previous incident, found extensive electrical malfunctions had occurred five times previously.

The first event the AAIB investigated occurred in October 2005 when a British Airways A319 crew lost both pilots' primary flight displays (PFD) and navigation displays (ND), plus the upper of two electronic centralised aircraft monitor (ECAM) screens.

The crew also lost all cockpit lighting and communications, and were left with only one operating ECAM. However, prompt use of the ECAM checklist quickly regained many of the lost services. Now the AAIB, reporting on a 15 September EasyJet A319 flight from Alicante in Spain to Bristol in the UK, says the crew lost fewer services but, unlike the BA crew, could not regain any of them.

The EasyJet problems were caused when an internal fault in the No 1 generator control unit (GCU) was interpreted by its monitoring system as an external fault in the No 1 generator line contactor, resulting in automatic isolation of one of the two main AC busbars.

The event happened in the cruise near Nantes, France. Before take-off, the No 1 engine-driven generator (EDG) had been selected off because of a fault, so the crew were operating with the No 2 EDG, plus the auxiliary power unit (APU) generator. The effect of the GCU fault was to open the No 1 bus tie connector automatically, which disconnected the APU generator supply from the No 1 main AC busbar that feeds the No 1 DC busbar.

This blacked out the captain's EFIS and multipurpose control and display unit, the upper ECAM display, disconnected the autopilot and autothrust, switched off the caption and integral illumination lights on the overhead panel and some on the centre pedestal, and caused the flight control law to change from normal to alternate, says the AAIB.

The captain, who was flying, had only the standby instruments operating on his side, so he handed control to the co-pilot, whose PFD and ND were operating. He tried to transmit a Mayday call, but none of the radios worked and the main transponder was not powered.

By carrying out the ECAM checklist, the captain successfully powered up the alternate transponder and entered the 7700 emergency code. He continued as flight-planned to Bristol, where the aircraft landed safely following deployment of the landing gear using the emergency system.


TOPICS: Business/Economy
KEYWORDS: a320; aerospace; airbus; boeing; eads
Good follow-up reporting on some A320 incidents reported at various times earlier. Enjoy
1 posted on 12/19/2006 9:03:11 AM PST by lowbuck
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To: lowbuck

Airbus repair kit:

Photobucket - Video and Image Hosting

2 posted on 12/19/2006 9:04:59 AM PST by TommyDale (Iran President Ahmadinejad is shorter than Tom Daschle!)
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To: lowbuck
Too many committees have their fingers in the pie with this Airbus nonsense. Now they are going to have the Chinese assemble the 5 humped flying camel. I have no desire to fly on an Airbus. I'll stick with BOEING.
3 posted on 12/19/2006 9:07:00 AM PST by avacado
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To: avacado
I'll stick with BOEING.

Me too.

4 posted on 12/19/2006 9:07:55 AM PST by SIDENET (Everybody was kung-fu fighting)
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To: lowbuck

"Airbus urged to fix A320's electrics."

Sounds like a good idea to me.

I prefer to stick to Boeing aircraft if at all possible.

How many other Airbus aircraft have lost various control systems and crashed?


5 posted on 12/19/2006 9:10:02 AM PST by garyhope (It's World War IV, right here, right now courtesy of Islam.)
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To: TommyDale

They want the electronics fixed? Why?

Methinks I'll only fly on Boeing craft from now on.


6 posted on 12/19/2006 9:11:15 AM PST by Loud Mime (Those who can make you believe absurdities can make you commit atrocities. - Voltaire)
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To: lowbuck
Enjoy

As somebody who has to fly these things from time to time, I'm not enjoying this at all!

7 posted on 12/19/2006 9:12:44 AM PST by bondjamesbond (Many Americans are invested in a US failure in Iraq, and will work diligently to bring it about.)
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To: avacado

You and SidNet beat me to it by 3 min.

Good ole American technology and craftsmanship.

America is a more real place and ethos. America is a more HONEST place and ethos. America is a more trustworthy place and idea.

We've got our faults, but still,.....


8 posted on 12/19/2006 9:13:45 AM PST by garyhope (It's World War IV, right here, right now courtesy of Islam.)
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To: lowbuck

Lucas strikes again!


9 posted on 12/19/2006 9:15:00 AM PST by expatpat
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To: TommyDale

Just getting the bugs out.

Yuk Yuk Yuk Yuk.....


10 posted on 12/19/2006 9:15:15 AM PST by PeteB570 (Guns, what real men want for Christmas)
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To: expatpat

The Prince of Darkness


11 posted on 12/19/2006 9:20:21 AM PST by appeal2
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To: TommyDale

You have that totally wrong. It is not Airbus but SCAREBUS. Fly on it at your own peril.


12 posted on 12/19/2006 9:31:36 AM PST by Retired AF Pilot
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To: lowbuck

Well, those must have been some white knuckle moments.


13 posted on 12/19/2006 9:33:28 AM PST by El Sordo
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To: avacado
Too many committees have their fingers in the pie with this Airbus nonsense. Now they are going to have the Chinese assemble the 5 humped flying camel. I have no desire to fly on an Airbus. I'll stick with BOEING.


Dilemas, dilemas...
US Air (the Imam's LEAST favorite airline) uses a lot of Airbus aircraft. American, etc., use a lot of the Boeing stuff. What to do?
I know--whenever that abortion of an Airbus A380 is the only way to get overseas--swim. At least you won't be making history by being involved in the world's deadliest airplane disaster.
14 posted on 12/19/2006 9:34:44 AM PST by OCCASparky (Steely-Eyed Killer of the Deep)
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To: garyhope
" ""Airbus urged to fix A320's electrics."

I guess they brought Lucas electrics

15 posted on 12/19/2006 10:13:43 AM PST by spokeshave (The Democrat Party stands for open treason in a time of war.)
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To: spokeshave
I guess they brought Lucas electrics

The Prince of Darkness

16 posted on 12/19/2006 10:44:40 AM PST by cpdiii (Oil Field Trash and proud of it, Geologist, Pilot, Pharmacist, Iconoclast)
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To: spokeshave

"I guess they brought Lucas electrics"

LOL, as the former owner of an MG, I know what you mean.


17 posted on 12/19/2006 11:10:32 AM PST by garyhope (It's World War IV, right here, right now courtesy of Islam.)
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To: TommyDale

Why isn't there an AD on this ,,, those power systems sound like they're much too likely to fail with little chance of recovery, can you imagine a dark glass cockpit AND losing your basic equipment like your Xpdr and radios in busy airspace in western Europe... If I was a professional I would carry a handheld radio with nav indicators in my bag for sure in one of those deathtraps...


18 posted on 12/19/2006 12:20:04 PM PST by Neidermeyer
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To: lowbuck

19 posted on 12/19/2006 12:39:39 PM PST by Fudd
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To: Fudd

BSOD * 11


20 posted on 12/19/2006 1:01:49 PM PST by Erasmus (Go to Sebastopol and Crimea River.)
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To: spokeshave; Rokke
Calling Rokke our Freeper expert and patriot:

I know they have mechanical backup instrumentation but what I am curious about is what is the backup system for the "fly by wire" on the Airbus?
21 posted on 12/19/2006 3:27:53 PM PST by cpdiii (Oil Field Trash and proud of it, Geologist, Pilot, Pharmacist, Iconoclast)
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To: garyhope

Would this be a good time to ask: "why do the British drink warm beer?"


22 posted on 12/19/2006 3:31:02 PM PST by Mr. Lucky
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To: Mr. Lucky

"Would this be a good time to ask: "why do the British drink warm beer?"


OK,....Why DO the British drink warm beer?


23 posted on 12/19/2006 4:02:18 PM PST by garyhope (It's World War IV, right here, right now courtesy of Islam.)
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To: garyhope

Lucas also makes refrigerators.


24 posted on 12/19/2006 4:07:48 PM PST by Mr. Lucky
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To: Mr. Lucky

ROFL. Thanks.


25 posted on 12/19/2006 4:40:35 PM PST by garyhope (It's World War IV, right here, right now courtesy of Islam.)
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To: garyhope

You guys realise that almost noone knows what you are talking about don't you?

In truth, you had to be there to see Lucas electrics!

The brits made the best chassis' and tires anywhere in those days.

But, if you drove through a puddle you needed a hair dryer or you waited for warm weather to continue.


26 posted on 12/19/2006 5:11:29 PM PST by BillM
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To: BillM

You should have seen our family's 1938 MG TA. Wooden body parts, a clutch plate with corks stuffed into holes in the clutch plate.

Driving it in the rain was an experience with the flimsy side curtains and windshield wipers that barely worked. I didn't care, the girls liked it.

Wish I still had it. Sold it way too cheaply.


27 posted on 12/19/2006 8:22:11 PM PST by garyhope (It's World War IV, right here, right now courtesy of Islam.)
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