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-   -   King Air down at Essendon? (https://www.pprune.org/pacific-general-aviation-questions/591237-king-air-down-essendon.html)

ACMS 22nd Feb 2017 07:02

Nah, looks legit video to me.

Harry Cooper 22nd Feb 2017 07:08


Originally Posted by desmotronic (Post 9683905)
https://www.youtube.com/watch?v=JDzi-utoKtc&t=201s

Interesting C90 EFATO video at light weight.
B200 speeds:
Vmca 90
Vx 101
Vy 108

If autofeather is in use reducing power lever before the prop stops will cancel autofeather.

Anyone know if Vmca assumes engine inop is feathered or not?

Any B200 from the mid-90's onwards, as well as the Raisbeck modded "4 bladers" are all certified with a Vmca that has a feathered prop, hence why the Autofeather is a mandatory item for all ops.

MickG0105 22nd Feb 2017 07:09

Gazumped
 
For someone who has supposedly read the accident report from cover to cover, studied it, and used it as a training guide, you continue to make unconditionally declarative statements that are simply not supported by its contents and in a manner that is defamatory to a deceased pilot. I am refering to your contentions that the PIC "... did retract the gear, but late, he did not retract the flap till his IAS was approx 95k, putting him 26K below blue speed, (his blue speed flap out was 106k), he eventually feathered the propeller very late, in ground effect ..."

I draw your attention to Section 1.16.7 Aircraft Performance on p.18, specifically;

"Whilst the landing gear was retracted when the left engine failed and the left propeller probably feathered shortly afterwards, it was not known at what point the flaps were retracted."

and 1.16.8 Left Propeller Feathering on pp.19-20, specifically;

"... it was considered only valid to conclude that the pilot had most probably feathered the left propeller shortly after the left engine failed."

1.16.9 Flight Path Reconstruction re-iterates that the left engine failed after the landing gear had been retracted and that "... at about 1908:30 hours [11 seconds after the left engine failed], he manually selected the left propeller to feather."

Section 2 Analysis (p.25) also states "... When the left engine of VH-AAV failed it is known that the landing gear was up ..."

The report (p.26) also makes the observation that "The pilot might have contemplated ditching the aircraft, but the short time available would not have permitted this to be a carefully planned manoeuvre."

There is nothing at all in the report to support your contention that "... the failed engine pumped through the water in the fuel, and reignited, and was at stable idle at impact ...". In fact the report specifically states in Section 2 Analysis (p.24) that;

"The only finding of significance during the examination of the left engine was numerous droplets of water in the FCU and downstream components. The water was present in sufficient volume to conclude that it had probably caused a flame-out."

Further, Section 1.16.1 Engines and propellers (p.13) states that when the left fuel control unit and fuel pump were inspected water was found throughout the fuel nozzles, transfer tubes, flow divider, FCU outlet line and the fuel pump itself. The report (p.14) also concludes that "... the pilot had retarded the left power lever as part of his left engine shutdown procedure."

I'd be very interested to hear how you were able to ascertain the speed at which the flaps were retracted when the DoT couldn't.

In sum, the gear was not retracted late (it was up before the left engine failed), the timing of flap retraction is not known and the left propeller was not feathered very late, it was feathered promptly after the left engine failed.

Maybe you should properly reacquaint yourself with the report particularly if you are applying your grossly misconstrued mental model of the accident to training. In the meantime, please refrain from further slandering a pilot who can not respond.

Cheers,
Mick

Squawk7700 22nd Feb 2017 07:26


Originally Posted by Old Akro (Post 9683835)
Only guys who didn't know Max would ask dopey questions like this.

I do not know of his experience in any way, shape or form, however I will say that many on here said the same thing of the ABC helicopter pilot and look what happened there.

bekolblockage 22nd Feb 2017 07:28

2 Attachment(s)
Concur with Birdman on the final flight path.
Taking a look at the location of the gouge in the DFO roof and some visual cues - the diagonal roofing join and the dislodged airconditioning unit, I would opine the final flight path is something as depicted here. (hope this attachment works).
The angle to Bulla Rd appears to be no more than about 30 degrees or about 50 degrees from rwy heading.

Squawk7700 22nd Feb 2017 07:57

Lots of info has just come to light in the news regarding feathering:

http://www.theage.com.au/victoria/pi...22-guitn9.html

mickjoebill 22nd Feb 2017 08:21


From the subsequent investigations and defenses we will learn a lot more than just "it was the pilot's fault"
Unless they settle out of court ....

The airfield may be closed in a misguided attempt to censure media helicopters, either by police who sometimes put too high a priority on subjudice or politicians who think media helicopters will broadcast pictures of victims.

How many ways can you look at the what ifs?
If DFO didn't exist, the king air would have hit a light pole or the telecom tower, then smacked into the freeway, where the traffic was dense due to road works. The downward slope encouraging a river of fire to form under the northbound carriageway.

What is the cost of an arrester net as used in U.K. Military bases?


Mickjoebill

Skillsy 22nd Feb 2017 08:26


Originally Posted by Squawk7700 (Post 9683987)
Lots of info has just come to light in the news regarding feathering:

Pilots untrained to deal with 'feathering' failure that may have caused DFO crash: experts

Isn't that just three Journo's scouring this thread for a story and getting an expert to glue it all together. Sloppy journalism at its dandiest.

Harry Cooper 22nd Feb 2017 08:27


Originally Posted by Squawk7700 (Post 9683987)
Lots of info has just come to light in the news regarding feathering:

Pilots untrained to deal with 'feathering' failure that may have caused DFO crash: experts

What a stupid headline.

Standard Raisbeck figures would give a V1/Vr of 94kts with a takeoff safety speed of 103 kts. If the Autofeather failed then as per the manual Vmca could be as high as 108 kts. Your already 14kts behind the eight ball if you had the failure as you rotated. 5 seconds into a 10 second flight just to recognise what the hell is going on.

Maybe the Kobayashi Maru should be a standard sim check.

zzuf 22nd Feb 2017 08:59

Thanks JT Funny, despite what was previously stated about major manufactures operational documents, my experiences with their flight test depts was always as per the regulatory certification docs.

john_tullamarine 22nd Feb 2017 09:17

Yes, mate ... certification and operations (especially marketing in OEMs) rarely sleep peacefully together.

Trust life is treating you well. Not over to Avalon by any chance ?

Kulwin Park 22nd Feb 2017 09:29

Looking at the footage, maybe the pilot was distracted by the engine out, had his head in the cockpit, and didn't realise that he was flying at such a low angle & high speed. I wonder if this has been considered? Just a thought.

How many times have you played at your car radio whilst driving, relaxed your hand pressure, and almost driven into a power pole or oncoming traffic?

zzuf 22nd Feb 2017 09:37

JT
Wanted to go to AV with BR also ex ARDU TPS, unfortunately SWMBO has appointment with knee butcher! Let you know next ML trip.

Capt Fathom 22nd Feb 2017 09:39

Kulwin,
If he was flying at high speed, the result would have been no doubt different.


How many times have you played at your car radio whilst driving, relaxed your hand pressure, and almost driven into a power pole or oncoming traffic?
Not ever! You need to get off the road!

desmotronic 22nd Feb 2017 10:13

I lost a loved one to aviation.
My sincere condolences to the families.

david1300 22nd Feb 2017 10:16


Originally Posted by Kulwin Park (Post 9684060)
...How many times have you played at your car radio whilst driving, relaxed your hand pressure, and almost driven into a power pole or oncoming traffic?

Also never. I hope I never have the misfortune to travel with you in control of any vehicle

wombraider 22nd Feb 2017 10:45

Given the fact the pilot reported an engine failure, and with only 5 POB, lets hope it's not another case of misidentifing the failed engine. RIP to all involved.

megan 22nd Feb 2017 11:12


Failures in both the engine and 'feathering' system, that pilots are not trained to deal with, may be behind Tuesday's fatal plane crash, experts say.
Given that pulling the power lever cancels the auto feather I wonder if he did his training in the aircraft or in a sim. Not training as you would fly in other words. Just wondering aloud.

The name is Porter 22nd Feb 2017 11:37


How many times have you played at your car radio whilst driving, relaxed your hand pressure, and almost driven into a power pole or oncoming traffic?
Kulwin Park, it's human nature to get distracted. I'll bet you the legends that replied to you have been distracted at some time in their car, screaming kid, other drivers actions etc. I'll bet you they've been distracted whilst in command of an aircraft as well ;)

aeromariner 22nd Feb 2017 12:25

There really is no inconsistency. Firstly I'm not going into far25, so forget 25-7. (if you have a couple of years.... ) Vmc and Vmcg are as defined in far23. Vmca is as defined in the GAMMA spec for flight manuals which is referenced in 23-8 and has Clements and Gallagher's signature on it so it must be right. Somewhere along the line Vmcg has been added to the Gamma spec


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