ETOPS question

To add, it's even more than required equipment for dispatch. Even if everything is operating after departure, if certain items malfunction in-flight prior to ETOPS entry (cargo smoke detection, particularly), you can't proceed.

Whoooole buncha stuff.

The coast out checklist I saw the last time I was on a Delta jumpseat to Hawaii was rather lengthy.
 
In the airplanes I've flown, it is a simple sub-capability/subroutine of the normal comm radio coupled to an HSI or other display with a compass rose on it.
Cool, didn't know that!

But there would need to be a sensor or something extra to determine a bearing?
 
Reminds me, dasleben, did a 2 week internship this past summer at Omni's operations center in Tulsa, learned a lot about ETOPs when doing the initial flight planning. And about catering. Lots and lots of catering.
 
Reminds me, dasleben, did a 2 week internship this past summer at Omni's operations center in Tulsa, learned a lot about ETOPs when doing the initial flight planning. And about catering. Lots and lots of catering.

I'd have to imagine that catering is a logistical nightmare, but they actually do a pretty good job down there in Tulsa. I can't recall any issues. :)
 
Cool, didn't know that!

But there would need to be a sensor or something extra to determine a bearing?

No, it just uses relative signal strength at multiple antennas on the aircraft to perform the DF. It is the same concept of operations for a radar warning receiver in a fighter; comparing signal strength to a known library of RF signals to calculate a direction and distance from the emitter.

I'm not sure if any airliners have this -- all my experience is with military aircraft that have this capability.
 
No, it just uses relative signal strength at multiple antennas on the aircraft to perform the DF. It is the same concept of operations for a radar warning receiver in a fighter; comparing signal strength to a known library of RF signals to calculate a direction and distance from the emitter.

I'm not sure if any airliners have this -- all my experience is with military aircraft that have this capability.

If you want some experience in an airliner I can probably get you job at a regional. It's a pretty sweet job, they even let you tell your family you fly airplanes for a living.
 
If you want some experience in an airliner I can probably get you job at a regional. It's a pretty sweet job, they even let you tell your family you fly airplanes for a living.

Depending on how things go over the next couple years, that may be an option for me.
 
No, it just uses relative signal strength at multiple antennas on the aircraft to perform the DF. It is the same concept of operations for a radar warning receiver in a fighter; comparing signal strength to a known library of RF signals to calculate a direction and distance from the emitter.

I'm not sure if any airliners have this -- all my experience is with military aircraft that have this capability.
That's pretty cool, how is it displayed? Like an RWR type screen?
 
That's pretty cool, how is it displayed? Like an RWR type screen?

In the F-15E, it was a little lollipop-shaped circle that rotated around the outside of the RWR circle -- it pointed at the station that was transmitting on the selected freq. It wasn't always up -- it was a specific mode you had to put the radio in.
 
To add, it's even more than required equipment for dispatch. Even if everything is operating after departure, if certain items malfunction in-flight prior to ETOPS entry (cargo smoke detection, particularly), you can't proceed.

Whoooole buncha stuff.


Not true, at least not under the rules my airline operates under. No in-flight malfunctions, other than the ones where the checklist says " Land at the nearest suitable airport " and multiple same system failures ( i.e. down to only one source of electrical power ) would require us to change our flight plan. In some cases it might be prudent to do so, as in your idea of loss of cargo smoke detection, but definitely not required.

Remember the MEL is a dispatch document. The only item in the B777 MEL that states No Dispatch for ETOPS is a Pack. If a Pack is MEL'ed you can not be dispatched for ETOPS. However, if the pack fails after takeoff there is no limitation on ETOPS flight.

Now, in regards to how much extra fuel a B777 would have on that particular flight I can say probably not much. I'm not sure what AC uses for their planning, but on our west coast flights ( 16 hours ) we typically land in LAX or SFO with only a little over an hour of fuel remaining. A Sydney flight would definitely have more because the alternates are much farther away. Canberra would be the nearest useable alternate for a B777, but we generally don't use it for planning unless the weather at SYD is really good. That generally means having Melbourne or Brisbane as the primary alternate. Canberra is 35 minutes away, while both Melbourne and Brisbane are a little over an hour.

Again, not sure what AC uses, but on an ultra long haul flight we would likely carry a 20 minute contingency; 30 minute final reserve, and the fuel to alternate. Add that up and with a Canberra alternate they would have 1:25 of fuel remaining on touchdown. With the further alternates it's right around 2 hours fuel remaining.


Typhoonpilot
 
Not true, at least not under the rules my airline operates under. No in-flight malfunctions, other than the ones where the checklist says " Land at the nearest suitable airport " and multiple same system failures ( i.e. down to only one source of electrical power ) would require us to change our flight plan. In some cases it might be prudent to do so, as in your idea of loss of cargo smoke detection, but definitely not required.

Remember the MEL is a dispatch document. The only item in the B777 MEL that states No Dispatch for ETOPS is a Pack. If a Pack is MEL'ed you can not be dispatched for ETOPS. However, if the pack fails after takeoff there is no limitation on ETOPS flight.

It is true for the 767 at my place of work, and not related to MEL. These malfunctions are listed in our ETOPS manual as items that cannot be carried past the EEP, even if the aircraft was dispatched without those items MEL'd.
 
It is true for the 767 at my place of work, and not related to MEL. These malfunctions are listed in our ETOPS manual as items that cannot be carried past the EEP, even if the aircraft was dispatched without those items MEL'd.

Okay, then you have more stringent requirements than we do. Not that that is a bad thing. We've had 2 real cargo fires in recent memory so if the cargo fire detection system went inop I would be inclined to agree with your company's policy.

You've also given me a new failure to give on LOS/LOE sims for upgrades :). I like those ones without a clear answer. Get to see what a guy's decision making process is like.


TP
 
Okay, then you have more stringent requirements than we do. Not that that is a bad thing. We've had 2 real cargo fires in recent memory so if the cargo fire detection system went inop I would be inclined to agree with your company's policy.

You've also given me a new failure to give on LOS/LOE sims for upgrades :). I like those ones without a clear answer. Get to see what a guy's decision making process is like.


TP

Oddly enough, the 777 at my company only has one limitation for ETOPS, and that's for the weather radar. Nothing about cargo smoke detection, etc. Fancy. ;)
 
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