Why the Captain of Cathay Pacific flight 780 was not able to shut down engine 1 and land with a more...
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In the approach phase, the engine 1 of Cathay Pacific flight 780 got stuck at about 70% N1 and it forced the crew to do an overspeed landing (230knots).
Why haven't they shut it off by turning the fuel pumps off? Is there a backup mechanism if the fuel valve fails like in this scenario?
safety jet-engine accident-investigation fuel-systems
asked 3 hours ago
xMoooxMooo
111
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$begingroup$
In the approach phase, the engine 1 of Cathay Pacific flight 780 got stuck at about 70% N1 and it forced the crew to do an overspeed landing (230knots).
Why haven't they shut it off by turning the fuel pumps off? Is there a backup mechanism if the fuel valve fails like in this scenario?
safety jet-engine accident-investigation fuel-systems
asked 3 hours ago
xMoooxMooo
111
New contributor
xMooo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
In the approach phase, the engine 1 of Cathay Pacific flight 780 got stuck at about 70% N1 and it forced the crew to do an overspeed landing (230knots).
Why haven't they shut it off by turning the fuel pumps off? Is there a backup mechanism if the fuel valve fails like in this scenario?
safety jet-engine accident-investigation fuel-systems
asked 3 hours ago
xMoooxMooo
111
New contributor
xMooo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
In the approach phase, the engine 1 of Cathay Pacific flight 780 got stuck at about 70% N1 and it forced the crew to do an overspeed landing (230knots).
Why haven't they shut it off by turning the fuel pumps off? Is there a backup mechanism if the fuel valve fails like in this scenario?
safety jet-engine accident-investigation fuel-systems
safety jet-engine accident-investigation fuel-systems
asked 3 hours ago
xMoooxMooo
111
New contributor
xMooo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
xMoooxMooo
111
New contributor
xMooo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
xMoooxMooo
111
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xMooo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
xMoooxMooo
111
asked 3 hours ago
xMoooxMooo
111
111
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1 Answer
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You can find the full incident report here and this topic is touched upon briefly but in short they had little to no time to entertain any other options but a full speed landing.
It was not until the aircraft on the final descent for landing that
the Commander realised they could not reduce the thrust on the number
1 engine. The speed was not controllable and from that point, there
was no time for the crew to consider other strategy nor procedure to
cope with such emergency situation.
and more in the conclusion section...
t. At that stage, there was no time for the flight crew to consider other
strategy nor procedure to cope with such emergency situation. The
flight crew concentrated on f lying the aircraft for a safe landing.
First off the engine was throwing errors through out the flight and they were talking to the maintenance team at other points. Ultimately the proper steps were taken and everything was done by the book. They were prepared for an engine out landing. When you have a runaway engine malfunction (or throttle stuck at full) shutting down prior to landing may not be the right decision if the running engine provides no immediate safety risk. If you shut down a problematic engine in flight you run the serious risk of not being able to get it started again.
Considering that most airports have a bit (or a lot) of extra runway, EMAS systems and often land at the end of the runway, coming in over speed and burning through your tires and breaks may be safer than cutting the engine and potentially falling short of the runway.
answered 2 hours ago
DaveDave
62.7k4112229
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1 Answer
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1 Answer
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$begingroup$
You can find the full incident report here and this topic is touched upon briefly but in short they had little to no time to entertain any other options but a full speed landing.
It was not until the aircraft on the final descent for landing that
the Commander realised they could not reduce the thrust on the number
1 engine. The speed was not controllable and from that point, there
was no time for the crew to consider other strategy nor procedure to
cope with such emergency situation.
and more in the conclusion section...
t. At that stage, there was no time for the flight crew to consider other
strategy nor procedure to cope with such emergency situation. The
flight crew concentrated on f lying the aircraft for a safe landing.
First off the engine was throwing errors through out the flight and they were talking to the maintenance team at other points. Ultimately the proper steps were taken and everything was done by the book. They were prepared for an engine out landing. When you have a runaway engine malfunction (or throttle stuck at full) shutting down prior to landing may not be the right decision if the running engine provides no immediate safety risk. If you shut down a problematic engine in flight you run the serious risk of not being able to get it started again.
Considering that most airports have a bit (or a lot) of extra runway, EMAS systems and often land at the end of the runway, coming in over speed and burning through your tires and breaks may be safer than cutting the engine and potentially falling short of the runway.
answered 2 hours ago
DaveDave
62.7k4112229
$endgroup$
add a comment |
$begingroup$
You can find the full incident report here and this topic is touched upon briefly but in short they had little to no time to entertain any other options but a full speed landing.
It was not until the aircraft on the final descent for landing that
the Commander realised they could not reduce the thrust on the number
1 engine. The speed was not controllable and from that point, there
was no time for the crew to consider other strategy nor procedure to
cope with such emergency situation.
and more in the conclusion section...
t. At that stage, there was no time for the flight crew to consider other
strategy nor procedure to cope with such emergency situation. The
flight crew concentrated on f lying the aircraft for a safe landing.
First off the engine was throwing errors through out the flight and they were talking to the maintenance team at other points. Ultimately the proper steps were taken and everything was done by the book. They were prepared for an engine out landing. When you have a runaway engine malfunction (or throttle stuck at full) shutting down prior to landing may not be the right decision if the running engine provides no immediate safety risk. If you shut down a problematic engine in flight you run the serious risk of not being able to get it started again.
Considering that most airports have a bit (or a lot) of extra runway, EMAS systems and often land at the end of the runway, coming in over speed and burning through your tires and breaks may be safer than cutting the engine and potentially falling short of the runway.
answered 2 hours ago
DaveDave
62.7k4112229
$endgroup$
add a comment |
$begingroup$
You can find the full incident report here and this topic is touched upon briefly but in short they had little to no time to entertain any other options but a full speed landing.
It was not until the aircraft on the final descent for landing that
the Commander realised they could not reduce the thrust on the number
1 engine. The speed was not controllable and from that point, there
was no time for the crew to consider other strategy nor procedure to
cope with such emergency situation.
and more in the conclusion section...
t. At that stage, there was no time for the flight crew to consider other
strategy nor procedure to cope with such emergency situation. The
flight crew concentrated on f lying the aircraft for a safe landing.
First off the engine was throwing errors through out the flight and they were talking to the maintenance team at other points. Ultimately the proper steps were taken and everything was done by the book. They were prepared for an engine out landing. When you have a runaway engine malfunction (or throttle stuck at full) shutting down prior to landing may not be the right decision if the running engine provides no immediate safety risk. If you shut down a problematic engine in flight you run the serious risk of not being able to get it started again.
Considering that most airports have a bit (or a lot) of extra runway, EMAS systems and often land at the end of the runway, coming in over speed and burning through your tires and breaks may be safer than cutting the engine and potentially falling short of the runway.
answered 2 hours ago
DaveDave
62.7k4112229
$endgroup$
You can find the full incident report here and this topic is touched upon briefly but in short they had little to no time to entertain any other options but a full speed landing.
It was not until the aircraft on the final descent for landing that
the Commander realised they could not reduce the thrust on the number
1 engine. The speed was not controllable and from that point, there
was no time for the crew to consider other strategy nor procedure to
cope with such emergency situation.
and more in the conclusion section...
t. At that stage, there was no time for the flight crew to consider other
strategy nor procedure to cope with such emergency situation. The
flight crew concentrated on f lying the aircraft for a safe landing.
First off the engine was throwing errors through out the flight and they were talking to the maintenance team at other points. Ultimately the proper steps were taken and everything was done by the book. They were prepared for an engine out landing. When you have a runaway engine malfunction (or throttle stuck at full) shutting down prior to landing may not be the right decision if the running engine provides no immediate safety risk. If you shut down a problematic engine in flight you run the serious risk of not being able to get it started again.
Considering that most airports have a bit (or a lot) of extra runway, EMAS systems and often land at the end of the runway, coming in over speed and burning through your tires and breaks may be safer than cutting the engine and potentially falling short of the runway.
answered 2 hours ago
DaveDave
62.7k4112229
answered 2 hours ago
DaveDave
62.7k4112229
answered 2 hours ago
DaveDave
62.7k4112229
answered 2 hours ago
DaveDave
62.7k4112229
62.7k4112229
add a comment |
add a comment |
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