tag:blogger.com,1999:blog-10000144.post7662896168770940128..comments2024-03-13T09:47:40.487+00:00Comments on Cockpit Conversation: Electrical EncoreAviatrixhttp://www.blogger.com/profile/13634111275860140084noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-10000144.post-39114162867307557092009-09-26T06:14:12.766+00:002009-09-26T06:14:12.766+00:00Just found out that with its 3600 nm range, an A31...Just found out that with its 3600 nm range, an A319 <b>can</b> fly from the US to Europe. Didn't expect that.Wayne Farmerhttps://www.blogger.com/profile/04565643844775331695noreply@blogger.comtag:blogger.com,1999:blog-10000144.post-74510671154426438192009-09-26T05:54:09.565+00:002009-09-26T05:54:09.565+00:00What's the current status of this problem? Th...What's the current status of this problem? The EASA and the FAA seem to disagree on the proper solution.<br /><br />Here's what I found doing Google searches:<br /><br />(1) On 29 June 2009, EASA did issue a PAD 09-086, "Notification of a Proposal to issue an Airworthiness Directive", that would require:<br /><br />"Within 36 months after the effective date of this AD, modify the Electrical Power Distribution System in accordance with the instructions of AIRBUS Service Bulletin (SB) A320-24-1120 Revision 2."<br /><br />Reference: <br />http://ad.easa.europa.eu/ad/09-086 <br /><br />and the PDF it links to.<br /><br />That service bulletin installs an function that will automatically switch in replacement power following an AC BUS1 failure, rather than require the pilots to switch it in manually.<br /><br />(2) On 23 January 2009, the FAA issued an Airworthiness Directive that took a more conservative approach, requiring that:<br /><br />"Unless already done, within 42 months after the effective date of this AD: Modify the electrical supply logic of the under glare shield flood lighting in accordance with the instructions given in Airbus Mandatory Service Bulletin A320-33-1057, Revision 01, dated January 31, 2008."<br /><br />Reference:<br /><br />http://tinyurl.com/y8e424v<br /><br />(The EASA had already required the above in an earlier Airworthiness Directive, AD 2007-0286.)<br /><br />In the FAA reference, you can see that NWA requested to be allowed to do the EASA's A320-24-1120 fix instead, but was denied that by the FAA, which stated, in part:<br /><br />"We agree that accomplishing the modification specified in Airbus Service Bulletin A320-33-1057, dated May 11, 2007; or Airbus Mandatory Service Bulletin A320-33-1057, Revision 01, dated January 31, 2008; does not address the root cause of the problem or alleviate all other operational problems related to the AC BUS 1 failures. We have not determined the root cause for loss of first officer displays following failure of AC BUS 1, but we know the root cause of this failure condition is not addressed by accomplishing Airbus Service Bulletin A320-24-1120, Revision 01, dated December 19, 2007. [,,,] In light of these factors, we may consider further rulemaking related to Airbus Service Bulletin A320-24-1120, Revision 01, dated December 19, 2007, in the future. We have made no change to the AD in this regard."<br /><br />So, the EASA action will have all jets modified in 36 months to do an automatic power switchover, but the FAA action will have all jets modified in 42 months to not do an automatic power switchover, but just ensure the standby instruments are illuminated.<br /><br />For passengers traveling within the US on carriers that also fly to Europe, does the EASA action affect aircraft that don't fly overseas? (e.g. NWA A319 aircract)Wayne Farmerhttps://www.blogger.com/profile/04565643844775331695noreply@blogger.comtag:blogger.com,1999:blog-10000144.post-66427235491528745172009-09-15T06:25:57.226+00:002009-09-15T06:25:57.226+00:00before taking any flight off..we should check the ...before taking any flight off..we should check the ATc system, as I guess as student of "electrical courses" from http://www.ableskills.co.uk/electrical-course.htmAnirban Dashttps://www.blogger.com/profile/11876073297083607872noreply@blogger.comtag:blogger.com,1999:blog-10000144.post-53944344245968956132009-09-11T07:05:38.414+00:002009-09-11T07:05:38.414+00:00Complex control systems using valves requires an a...Complex control systems using valves requires an automatic control based input of an actuator. The actuator strokes the valve allowing the valve to be positioned accurately and allowing control over a variety of requirements.industrial equipmenthttp://www.meaincorporated.comnoreply@blogger.comtag:blogger.com,1999:blog-10000144.post-3426022491733626842009-09-05T13:03:30.848+00:002009-09-05T13:03:30.848+00:00It's may be not so bad to look at the good old...It's may be not so bad to look at the good old switches when you want to know their position... just to be sure you're checking the correct one.<br /><br />The fact that the aircraft disappeared from radar displays raises an old question: shall ATC maintain primary radar coverage to ensure continuity in case of loss of transponder ? The situation is not the same from one country to another. Given the cost of primary radar, it's a tricky one.Vincent, from PlasticPilot.nethttp://www.plasticpilot.net/blognoreply@blogger.comtag:blogger.com,1999:blog-10000144.post-49058436098212424792009-09-05T12:41:13.622+00:002009-09-05T12:41:13.622+00:00Yay. You've answered something I've been w...Yay. You've answered something I've been wondering about for some time. The EFB that I'm working on has hydraulic fluid labels of L,C,R or 1,2,3 or G,B,Y - depending on what aircraft it is for. Left, Centre, Right is easy enough to figure out, but we were never sure about GBY and wondered if it was Green, Blue, Yellow. Looks like our guess was right.<br /><br />ShortLouise.Louisehttps://www.blogger.com/profile/15614662014433797652noreply@blogger.comtag:blogger.com,1999:blog-10000144.post-29882568529428716582009-09-05T03:04:50.065+00:002009-09-05T03:04:50.065+00:00They could probably have killed the APU with the f...They could probably have killed the APU with the fire handle just like with the engines.<br /><br />Good point about the push-button on-off switches vs. toggles. Airbus PBs latch electronically and the only way to tell if they're ON or not is by the internal light and/or the ECAM schematic. Which are not supposed to fail at the same time.<br /><br />Sounds like a "congrats" is in order for this crew for successfully handling one of Those Events that is not covered in the books because it's Not Supposed to Happen.Aluwingshttps://www.blogger.com/profile/16518739658424324739noreply@blogger.comtag:blogger.com,1999:blog-10000144.post-15356465752239891742009-09-05T02:37:03.448+00:002009-09-05T02:37:03.448+00:00IMHO "Clunk" is not quite as bad as &quo...IMHO "Clunk" is not quite as bad as "BANG". My last "BANG" caused the big fan to stop blowing cool air, and boy did I sweat! (Last July I dropped the #3 exhaust valve on my lycosaur, did a forced on a gravel road about 20 NM west of Villenuve...)SwL_Wildcatnoreply@blogger.comtag:blogger.com,1999:blog-10000144.post-19574973217044541522009-09-05T01:56:03.731+00:002009-09-05T01:56:03.731+00:00Dear Trix:
Quote: "Clunk is rarely a good so...Dear Trix:<br /><br />Quote: "Clunk is rarely a good sound in aviation..."<br /><br />May I use that? Truly a wonderful line. I look forward to digesting the report...thanks for providing the link.<br /><br />The more complex the elec(trical/tronic) systems, the worse idea it is to release an a/c for dispatch without thoroughly understanding any and all squawks.<br /><br />Stay safe, Trix.<br /><br />FrankFrank Van Hastehttps://www.blogger.com/profile/10821687850881538546noreply@blogger.comtag:blogger.com,1999:blog-10000144.post-78454520420985788942009-09-05T01:18:11.039+00:002009-09-05T01:18:11.039+00:00The link is there. It's on the words "thi...The link is there. It's on the words "this time" in the first paragraph.Aviatrixhttps://www.blogger.com/profile/13634111275860140084noreply@blogger.comtag:blogger.com,1999:blog-10000144.post-61714844196702969492009-09-05T01:04:13.621+00:002009-09-05T01:04:13.621+00:00Link to the report?
Love your blog btw...be sure ...Link to the report?<br /><br />Love your blog btw...be sure to tell your readers next time you're in YYC!<br /><br />AndrewAnonymousnoreply@blogger.com