FlySafair plane makes emergency landing after cabin pressure malfunction

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Safair Emergency

Unread post by Richard007 » Fri Aug 23, 2019 8:22 am

Safair loss of cabin pressure CPT-DUR. Seems Safair keeps having these.


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FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by No Fly No More » Fri Aug 23, 2019 10:04 am

Any news on what the real problem was here?
As always the media have made it sound horrendous using words like "crash-landing" .....
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by trees » Fri Aug 23, 2019 10:25 am

From AVH
A Flysafair Boeing 737-400, registration ZS-JRM performing flight FA-461 from Cape Town to Durban (South Africa), was climbing through FL300 out of Cape Town when the crew initiated an emergency descent to FL100 due to the loss of cabin pressure, the passenger oxygen masks were released. As result of the oxygen generators supplying the oxygen masks with oxygen a burning odour developed on board. The aircraft returned to Cape Town for a safe landing about 45 minutes after departure.

The occurrence aircraft positioned to Johannesburg at FL370 after about 15.5 hours on the ground and returned to service about 39.5 hours after landing in Cape Town.
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by rare bird » Fri Aug 23, 2019 7:49 pm

same old same old. Gasket gets squashed skew as the door is closed. The other one (Velvet Sky's old one) was the switch on the cargo door iirc.
takes ages to repack the masks
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by Romeo E.T. » Fri Aug 23, 2019 9:53 pm

rare bird wrote:
Fri Aug 23, 2019 7:49 pm
same old same old. Gasket gets squashed skew as the door is closed. The other one (Velvet Sky's old one) was the switch on the cargo door iirc.
takes ages to repack the masks
I doubt whether a squashed door seal will cause decompression,

more likely would be a pack failure, and then the remaining pack unable to maintain pressurization.
or the pressurization control going on the "fritz" totally.

Those -400 are getting rather old....and leaking like a sif

From what second hand or third hand info I have, is that they initially descended from the 30's down to 20 000ft,
then a further descend to 10 000ft and return to CPT

That intermediate stop at 20 000ft would point to a single pack failure, and then hoping that the remaining operating pack can sustain pressurization at reduced differential such as is attainable at 20 000ft, which it wasnt able to do.

Just my guess (IMHO)
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by Flyman » Fri Aug 23, 2019 9:56 pm

Reg available ?
Presume a B734
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by Romeo E.T. » Fri Aug 23, 2019 10:24 pm

Flyman wrote:
Fri Aug 23, 2019 9:56 pm
Reg available ?
Presume a B734
A Flysafair Boeing 737-400, registration ZS-JRM performing flight FA-461 from Cape Town to Durban (South Africa), was climbing through FL300 out of Cape Town when the crew initiated an emergency descent to FL100 due to the loss of cabin pressure, the passenger oxygen masks were released. As result of the oxygen generators supplying the oxygen masks with oxygen a burning odour developed on board. The aircraft returned to Cape Town for a safe landing about 45 minutes after departure.

The occurrence aircraft positioned to Johannesburg at FL370 after about 15.5 hours on the ground and returned to service about 39.5 hours after landing in Cape Town.
a burning odour developed on board
Also leads me to believe it was a pack failure
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by Taildraggerdriver » Fri Aug 23, 2019 11:43 pm

rare bird wrote:
Fri Aug 23, 2019 7:49 pm
same old same old. Gasket gets squashed skew as the door is closed. The other one (Velvet Sky's old one) was the switch on the cargo door iirc.
takes ages to repack the masks
:lol:
You mean the door seal
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by Ray W » Sat Aug 24, 2019 7:55 am

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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by ACE MAN » Sat Aug 24, 2019 10:25 am

Like RET said , most likely a Pack failure or the pressurization controller system.
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by Richard007 » Sat Aug 24, 2019 11:35 am

How many packs does a B734 have? Seems odd that if the remaining ones were operational that the situation would have been as it was.
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by ACE MAN » Sat Aug 24, 2019 11:44 am

Richard007 wrote:
Sat Aug 24, 2019 11:35 am
How many packs does a B734 have? Seems odd that if the remaining ones were operational that the situation would have been as it was.
Irrespective, for pressurized flight one pack will be required. We have no idea of this aircraft's dispatch on the day and there are several pneumatic and controllers in play that the aircraft could have dispatched with inop. There would be operational notes limiting the dispatch , fuel penalties, ETOPs (EDTO), weight or RTOW penalties etc. Within the MEL/DDG the aircraft can still be dispatched for rectification within the MEL period.
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by GuyS » Sat Aug 24, 2019 1:39 pm

Hi. I was on board that flight. 2 loud noises heard 10 seconds apart just before they leveled out and oxygen masks deployed. Noise came from underneath the aircraft. Similar sounds to when they are loading luggage and throw a heavy suitcase into the plane. Thudding sounds. When I heard it I knew that something was not right. 10 seconds later all was confirmed when we started a rapid descent. Scary stuff i can tell you. Pitch dark so no visual references. Was thankful to touch down 30 minutes later.
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by ACE MAN » Sat Aug 24, 2019 2:39 pm

GuyS wrote:
Sat Aug 24, 2019 1:39 pm
Hi. I was on board that flight. 2 loud noises heard 10 seconds apart just before they leveled out and oxygen masks deployed. Noise came from underneath the aircraft. Similar sounds to when they are loading luggage and throw a heavy suitcase into the plane. Thudding sounds. When I heard it I knew that something was not right. 10 seconds later all was confirmed when we started a rapid descent. Scary stuff i can tell you. Pitch dark so no visual references. Was thankful to touch down 30 minutes later.
Have you ever heard a rumbling pack or a pack shutdown in flight before?

Edit : Any chance the Captain updated the failure to the pax after landing? Did you depart on the same plane later? Tks
Last edited by ACE MAN on Sat Aug 24, 2019 3:40 pm, edited 1 time in total.
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Re: FlySafair plane makes emergency landing after cabin pressure malfunction

Unread post by Deanw » Sat Aug 24, 2019 3:25 pm

GuyS wrote:
Sat Aug 24, 2019 1:39 pm
Hi. I was on board that flight. 2 loud noises heard 10 seconds apart just before they leveled out and oxygen masks deployed. Noise came from underneath the aircraft. Similar sounds to when they are loading luggage and throw a heavy suitcase into the plane. Thudding sounds. When I heard it I knew that something was not right. 10 seconds later all was confirmed when we started a rapid descent. Scary stuff i can tell you. Pitch dark so no visual references. Was thankful to touch down 30 minutes later.
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