Air Zim emergency out of ORT

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Rotor kop
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Re: Air Zim emergency out of ORT

Unread post by Rotor kop » Sun Apr 28, 2019 9:51 pm

Sideslip wrote:
Sun Apr 28, 2019 7:27 pm
My area crimewatch Whatsapp group just went berserk as people heard an explosion. Turns out it’s a air Zim 767 outbound from ORT with motor issues. Some say motor was on fire.

I presume they will dump fuel and return. I hope all goes well.
Dumping fuel with a burning engine :shock:
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Re: Air Zim emergency out of ORT

Unread post by ACE MAN » Sun Apr 28, 2019 9:57 pm

Only guessing , looks like a compressor stall and they probably shut it down and got the engineering go ahead for a Re-light. I think a simple return to land is the easiest/best option but lots of strange things happening these days.
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Re: Air Zim emergency out of ORT

Unread post by Romeo E.T. » Sun Apr 28, 2019 10:32 pm

ACE MAN wrote:
Sun Apr 28, 2019 9:57 pm
Only guessing , looks like a compressor stall and they probably shut it down and got the engineering go ahead for a Re-light. I think a simple return to land is the easiest/best option but lots of strange things happening these days.
Like foreign currency to pay for repairs at SAAT, and to pay for hotel accomodation, rather take it back to base, (if the QRH allows)

Vaughan K wrote:
Sun Apr 28, 2019 8:42 pm
My take, Compressor stall on departure they then turned onto the downwind, levelled off at 9000ft to run the checklist, Eng Lim/Surge/Stall.
Engine back to normal with no abnormal indications, continue the flight to destination.
Thats pretty much what I saw. By the time it turned downwind it had stopped barking.
[/quote]
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Re: Air Zim emergency out of ORT

Unread post by Spoke Eagle » Sun Apr 28, 2019 11:00 pm

Was driving past Olifantdfontein and saw them coming and climbing very slowly. Looked like the SAA 747s in the old days! My wife kept an eye on them untill late down wind then lost them in the lights. Glad theyre ok.
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Re: Air Zim emergency out of ORT

Unread post by MadMacs » Mon Apr 29, 2019 2:40 am

jimdavis wrote:
Sun Apr 28, 2019 9:07 pm
Please can some knowledgable person explain compressor stalls, and how they can be considered ops normal.

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When they use the loaded term "denier" that should be the first clue that we're not dealing with a rational opponent in a debate... but "religious" dogma.
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Re: Air Zim emergency out of ORT

Unread post by Romeo E.T. » Mon Apr 29, 2019 2:53 am

B767 QRH

No problem with continued flight if operation is normal after running the checklist
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Re: Air Zim emergency out of ORT

Unread post by Spoke Eagle » Mon Apr 29, 2019 5:40 am

According to Google the reasons for stall is FOD, worn or dirty vanes or abnormal/ rapid airframe movement. Most likely must be FOD if it happens at take-off and shurely that should be checked🤔.
I wont fly with them eazily!
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Re: Air Zim emergency out of ORT

Unread post by jimdavis » Mon Apr 29, 2019 6:54 am

Thanks MM, Schultzie and Spokers. =D> =D> =D>

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Re: Air Zim emergency out of ORT

Unread post by shadow » Mon Apr 29, 2019 8:14 am

Do they replace engine mounting bolts/pins after this event. It looks like violent shock loads that get sent throughout the engine support/mounting structure and hundreds of events taken place.
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Re: Air Zim emergency out of ORT

Unread post by MadMacs » Mon Apr 29, 2019 8:32 am

shadow wrote:
Mon Apr 29, 2019 8:14 am
Do they replace engine mounting bolts/pins after this event. It looks like violent shock loads that get sent throughout the engine support/mounting structure and hundreds of events taken place.
The largest cause of compressor stall are bird strikes and invariably the engine has to be changed. All the mount bolts are replaced with every engine change and the mounts are quite robust and never need replacing unless inspection reveals any anomalies. A worn out engine would either be EGT limited or have very high fuel consumption depending on whether it's the compressor or turbine that is shot.

Compressor stall or engine surge is usually caused by the VSV's, variable stator vanes going out of schedule or perhaps a failed engine bleed valve. These days with engines controlled by Fadec the remedy would probably be simply change the Fadec unit whereas on the old Fcu type controls you would retrim the fuel control unit which was time consuming and costly.
When they use the loaded term "denier" that should be the first clue that we're not dealing with a rational opponent in a debate... but "religious" dogma.
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Re: Air Zim emergency out of ORT

Unread post by springbok » Mon Apr 29, 2019 8:58 am

340_co-jock wrote:
Sun Apr 28, 2019 9:24 pm
The 767 that continued on to Harare was UM303.
UM 462 also had an issue this evening and they have returned to FAOR according to a FB posting below:

South African Magazine

22 mins ·
...
UPDATE: There's been confusion between two flights - UM462 and UM303. The former has had to land at OR Tambo shortly after take-off, whereas UM303 was given the green-light to continue. We've got all the latest developments here.
Air Zim only have one B767, it arrived from Vic Falls as UM303 just before 5 pm and then departed as UM462 to Harare around 7:15 pm. For some reason they did not change the flight number on the FMS so they continued transmitting the 303 as the flight number which is what FR24 uses, hence the confusion it was 2 different aircraft.
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Re: Air Zim emergency out of ORT

Unread post by springbok » Mon Apr 29, 2019 9:09 am

The Air Zimbabwe press release re the incident.
198FF193-7F4F-44F1-9ED2-F862ED442EA9.jpeg
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Re: Air Zim emergency out of ORT

Unread post by Ugly Duckling » Mon Apr 29, 2019 9:15 am

springbok wrote:
Mon Apr 29, 2019 9:09 am
The Air Zimbabwe press release re the incident.

198FF193-7F4F-44F1-9ED2-F862ED442EA9.jpeg
What a pleasure to get a no frill press release from the airline within a few hours =D>
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Re: Air Zim emergency out of ORT

Unread post by Horace Blok » Mon Apr 29, 2019 3:35 pm

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Re: Air Zim emergency out of ORT

Unread post by jimdavis » Mon Apr 29, 2019 3:42 pm

This makes me wonder if it's not worth having cameras facing our towards the wings and engines so the crew can visually assess nasty noises, lost cowls, and flappy bits gone wrong on the wings.

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