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Air Niugini 737 overun at Guam

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Air Niugini 737 overun at Guam

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Old 2nd Oct 2018, 05:44
  #61 (permalink)  
 
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Do they have approach Bans ?
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Old 2nd Oct 2018, 06:21
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Understand Capt is PNG national ex-military and F/O is an expat....
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Old 2nd Oct 2018, 07:41
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Chuuk (Truk) NOT Guam!

The latest scuttlebuck coming back from the most reliable sources of all (The Crew Room) appear to confirm that the National Captain and Phillipino First Officer were both relatively inexperienced on type and had only flown into Chuuk once before ...... totally unconfirmed of course!

What does make more sense is that BOTH PILOTS were (supposedly) concentrating solely on trying to locate the runway ahead in heavy showers and NOBODY was watching inside to see how the airspeed/altitude were going!

The well known "are we visual or ain't we?" Of interest will be if the GPWS ever activated as it would have been on the 737 for sure, hopefully operational and should have provided more than adequate warning to the crew???

Also appears that the 737 was fully configured for landing and splashed down in quite shallow water - not a bad landing really all things considered!

Including the very recent DHC8 BBQ at Mendi, PX has now lost FIVE (5) hulls in less than a decade - pilot error in them all with the 737 yet to be decided maybe -and dare I say it but after 25 years with PX, I can assure you all that the C & T is a major concern to everybody in the pilot corp!

The new CEO (ex Qantas) will have his hands full pulling PX out of the ditch and will hopefully address the ever-worsening C & T situation plus what appears to be the usual rapid localization of national Pilots into the LHS!

PX! One day a rooster - the next a feather duster!

A true tragedy!

Last edited by RetiredTooEarly; 2nd Oct 2018 at 07:42. Reason: typo
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Old 2nd Oct 2018, 08:23
  #64 (permalink)  
 
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Including the very recent DHC8 BBQ at Mendi, PX has now lost FIVE (5) hulls in less than a decade
Care to elaborate? ASN showing only 2 – PXY at Madang, and PXE at Chuuk. Airfleets.net showing one (PXY), but that’s not been updated to include PXE.Not too sure if the BBQ at Mendi can be attributed to PX either, because the aircraft was on the ground shut down at the time of the event, and from what I heard, the BBQ was beyond the control of PX. So I don’t really think that one counts. I’d really like to know about the other 3 in the last ten years though.
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Old 2nd Oct 2018, 09:01
  #65 (permalink)  
 
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Originally Posted by RetiredTooEarly
..Of interest will be if the GPWS ever activated as it would have been on the 737 for sure
What logic would trigger a GPWS warning when the aircraft is in a landing configuration, and the aircraft position makes sense in relation to the runway and any surrounding obstacles? If you're barrelling along on final approach with the gear down and at the right speed and descent rate, but not being able to see where you're going, I bet you can splatter it on the runway, or just short of it, or just past it, without the GPWS logic being triggered.
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Old 2nd Oct 2018, 10:33
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Your suspicions are correct Gullibell, the NG gives NO alert "In shallow descent, in Landing configuration". But should have ( Mode 6) Aural RA callouts: "100,50,40,30,20 & 10" although might be hard to hear above the noise of (heavy?) rain & "thrashing" 73 wiper blades.
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Old 2nd Oct 2018, 10:36
  #67 (permalink)  
 
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if the GPWS ever activated as it would have been on the 737
and
without the GPWS logic being triggered
The EGPWS is generally inhibited in the landing configuration . You will get "glideslope" if you're high or low and have an ILS dialled up (or "too low flaps" if not configured properly) but otherwise nothing if things are put out correctly. If you're on slope/on speed and intentionally approaching the ground, why would you want an EGPWS alert?
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Old 2nd Oct 2018, 11:44
  #68 (permalink)  
 
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Originally Posted by patagonianworelaud
..If you're on slope/on speed and intentionally approaching the ground, why would you want an EGPWS alert?
Exactly...which is how I'm familiar with it working...(and I wasn't the one who suggested the GPWS may have provided some warning prior to splash down).
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Old 2nd Oct 2018, 17:56
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Originally Posted by Toruk Macto
Do they have approach Bans ?
No one has permission to descend below the MDA without the required visibility and if you lose it below the MDA you’re supposed to go around. Nothing to do with approach bans.
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Old 2nd Oct 2018, 18:49
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Approach bans aren’t implemented in the PNG regs, nor are they in any PNG operator’s SOPs to my knowledge.




Last edited by Duck Pilot; 2nd Oct 2018 at 19:08.
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Old 2nd Oct 2018, 23:53
  #71 (permalink)  
 
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EGPWS / TAWS

There is a warning that ignores the fact you are configured for landing. It is based purely on the terrain database
around each airport and where you are in relation to the runway.

"TOO LOW TERRAIN" : alert issued when descending below a safe radio altitude while far from a runway.

In this case, they were probably too close to the runway for a warning to be issued!
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Old 3rd Oct 2018, 00:12
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Looking at the picture of it in the water with the hills behind it on the left hand side it can only be on approach to Rwy 22. Check it out on Google Earth.
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Old 3rd Oct 2018, 01:27
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Does the 737 EGPWS have the Terrain Clearance Floor function? It's designed to stop precisely this type of accident. I had it activate when I was landing on a new parallel runway, NDB had been updated so we had the approach, but the GPWS database hadn't been:

https://aerocontent.honeywell.com/ae...ance_Floor.pdf
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Old 3rd Oct 2018, 01:37
  #74 (permalink)  
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Originally Posted by DHC8 Driver


No one has permission to descend below the MDA without the required visibility and if you lose it below the MDA you’re supposed to go around. Nothing to do with approach bans.
And yet, there is now a new artificial reef in the lagoon, so apparently some groups didn't get that memo. Thing is, humans continuously breach rules in small and large extents, with best of intentions and for other reasons. Sometimes, the fact that humans do not follow rules well is the reason that outcomes are successful. The crew at PTKK probably didn't wake up in the morning thinking it was a great day to go swimming and revalidate their SEP's.

People bust rules, hardware just busts. Question is from a systems view how to harden the operation to assure outcomes don't include tears or repacking of liferafts.
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Old 3rd Oct 2018, 02:08
  #75 (permalink)  
 
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The problem at PX is greater than 1 crew possibly breaking minimum and crashing a plane,
Why after 5 years of having the 737 fleet are they not approved for GNSS, Why do Captains who struggled on the Fokker fleet now flourish in the 737 fleet, Why has the training department been slashed to a fraction of its previous budget.

A lot of the answers to these questions and many more are a result of the piss poor management practice of Foo and
Taufa.
Foo was warned directly 2 years ago that FSM was going to end in tears if they continued to cut corners.

They ignored it...........

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Old 3rd Oct 2018, 02:21
  #76 (permalink)  
 
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Maybe it's time to bring back the rain repellent on the 737. After all that is what it was certified with originally.
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Old 3rd Oct 2018, 02:50
  #77 (permalink)  
 
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Swiss cheese methinks...
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Old 3rd Oct 2018, 03:10
  #78 (permalink)  
 
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Originally Posted by neville_nobody
Maybe it's time to bring back the rain repellent on the 737. After all that is what it was certified with originally.

I don't think repellent will cope with THAT much water, but maybe it would help it float some...
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Old 3rd Oct 2018, 03:43
  #79 (permalink)  
 
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In today’s The Australian, Australian aviation consultant Randal McFarlane said it was a “catastrophic accident “ for Air Niugini.
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Old 3rd Oct 2018, 03:58
  #80 (permalink)  
 
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Well yeah...loss of an aircraft and death of a passenger is catastrophic for any airline, particularly a National Carrier.
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