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 on: January 25, 2015, 01:24:04 PM 
Started by stevekirks - Last post by dave
A bandpass filter has been installed on this feed - enhanced reception for ATC frequencies and the interference appears to be gone for good.

 on: January 25, 2015, 12:08:53 PM 
Started by KC2555 - Last post by JetScan1
I am wondering how jet fuel ends up being super cooled when the ambient air temp is far above freezing.

I suspect what they meant was the fuel that was already onboard from the previous flight was cold soaked to below freezing (32F) while the aircraft was at cruise altitude where the temperature is typically between -50C and -60C.

 on: January 25, 2015, 11:19:16 AM 
Started by KC2555 - Last post by KC2555
Could someone please explain the following situation? My husband was on a Southwest flight that connected through Austin late last Friday afternoon (SW# 2137, AUS to BNA, scheduled departure 5:05 pm). Although the air temp was around 50 degrees F, the flight was delayed to be redirected for de-icing. The flight deck reported to the passengers that "super cooled jet fuel had been loaded in and had caused ice to form on the wings". I realize that jet fuel freezes at a lower temp than water.  However, I am wondering how jet fuel ends up being super cooled when the ambient air temp is far above freezing. Is there a specific pre-flight protocol that checks for ice on the wings regardless of ambient air temp? Is this done only if the fuel is known to be super cooled? Or did someone just happen to notice the ice formation? Hopefully, not the last choice. We fly a lot and I have just never heard of this situation before and am hoping someone can enlighten me. Thanks.

 on: January 25, 2015, 06:17:23 AM 
Started by philip - Last post by philip

 on: January 24, 2015, 11:04:01 PM 
Started by mk223 - Last post by InterpreDemon
I hope it never happens. We already have an emerging problem with pilots' over-reliance upon automated flight control systems, and I know of no means by which you can digitally confirm that a pilot understood and acknowledges an instruction. How may of us simply click "I agree" to EULAs or TOS's and move on without reading them, even if they could be understood. So, you send a digital command to 526 to hold short, the pilot takes his eyes away from the windscreen to read it and then... if he agrees clicks "WILCO" and if he disagrees due to his emergency authority as PIC, he does what? Type a response? Click "NO" without explanation, or does he key the mic and say "That last instruction you sent I cannot comply with?" How quickly could the TC have sent that "1295 abort takeoff" command digitally and how quickly could it have been comprehended? Even worse, 1295 would not have even been able to hear that "STOP" command to 526, which is likely why they were already on top of the situation by the time the TC told them to abort.

No, there is a big difference between receiving a clearance and plugging it into the FMS, and communicating information required for immediate action or decision in a busy environment. Having many alert pilots and controllers sharing a common voice frequency in a busy ATA is the best way to assure the best possible situational awareness on the part of all the participants, and until the pilots are eliminated entirely I cannot imagine a better schema. When you look at the number of operations performed verses the handful of close calls, it's a no-brainer for me. Even in this case, in the end the system worked.

The next time you read a story of somebody who followed their GPS over a cliff, onto train tracks or (yes, it happened) across active runways at a major airport... imagine if they were pilots, or even four Air France pilots arguing with their on-board "HAL" as they flew themselves and their passengers into the Atlantic.

 on: January 24, 2015, 09:47:58 PM 
Started by Silvercrystal77 - Last post by Silvercrystal77
I've figured out that the only way I can somewhat listen to both sides of communications at KHOU is to listen to KHOU feed on my tablet and KIAH APPROACH on my phone at the same time.  But that's only if the HOU feed is on the corresponding frequency.  I can only hear the tower on the HOU approach but the IAH approach feed for some reason picks up HOU tower and aircraft on apoach to HOU.  It's kind of weird tor hear my phone answer my tablet and vice versa......if that makes any sense... 

Does anyone know why that is?

 on: January 24, 2015, 07:37:31 PM 
Started by dorough - Last post by dorough
Coms between pilots, tower & FBI from final approach to evacuation - condensed for time.


Two passenger jets were escorted by fighter jets to Hartsfield-Jackson Atlanta International Airport and evacuated Saturday after what authorities called two “credible” bomb threats. However, FBI Atlanta later said that no devices were found on either plane.

The flights, Delta flight 1156 and Southwest flight 2492, were met in the air by fighter jets and escorted to the airport “as a precautionary measure’ according to a spokesman for NORAD. The flights landed safety and the fighter jets returned to their base.

The passengers were evacuated and a bomb squad checked both planes, MyFoxAtlanta reports.

"Due a security situation, the aircraft operating Flight 2492 was taken to a remote area of the airport where customers and the aircraft are being rescreened,” a spokesman for Southwest Airlines said. “Our number one priority is the safety of our customers and people. We cannot comment on the nature of the security situation."

The FBI in Atlanta later confirmed that no explosive devices were discovered.

 on: January 24, 2015, 06:27:41 PM 
Started by mk223 - Last post by frcabot
All this makes me wonder when we are ever going to switch to digital comms or some sort of digital atc order transmission for verification or redundancy. I know we do it already for clearances but I hope it gets expanded.

 on: January 24, 2015, 05:46:02 PM 
Started by joerockshard - Last post by joerockshard
Anyone get anything from the threat escort incidents today? Southwest flight 2492 and Delta 1156 landing in ATL....

 on: January 24, 2015, 01:53:21 PM 
Started by laylow - Last post by InterpreDemon
My hope is that is what happened... they flew into an embedded cell, which can happen around large systems like the one they were trying to traverse.

If it turns out to be another sad instance of pilots discussing various "laws" and trying to point and click their fly-by-wire machine to safety it will be very depressing indeed.

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