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MAS A330 BNE leaves pitot covers on

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MAS A330 BNE leaves pitot covers on

Old 30th Jul 2018, 12:38
  #101 (permalink)  
 
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Possible

Originally Posted by scotneil View Post
To By George: please don't offer sympathy for the "poor devils" - I'm all for forgiveness of mistakes (and learning lessons from them) but this is simply incredible - very basic error. I don't understand why the problem wasn't spotted on the ground, at least during T/O roll. Consequences could be disastrous - remember Birgenair in 1996.
Is it possible that the pitot covers actually were removed before pushback, and then the flight developed a serious hydraulic issue after takeoff, and the pitot covers refitted later. I know it sounds incredible, but to me as an A330 pilot, it seems even more incredible that they were able to take off with the pitotcovers on.
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Old 7th Aug 2018, 10:53
  #102 (permalink)  
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Coming off Boeings onto the A320/330/340, I have to say that the standby speed indication on the Airbus was a nice change. The B777 didn't often have AoA displayed on the PFD, so in the same case, the only rational option was to use a differential between attitude and FPV to ascertain AoA. In around 2010 or so, that was pushed out of the available options, with Boeing recommending not to use the FPV in the case of a loss of all airspeed due to input into the display being degraded. Thereafter, you have GS and not much else other than reverting to the NNCL and the gross unreliable airspeed tables, which at least end up pointing you at planet earth but are hardly a precision system. At least with the 787 that became less of an issue, but, Airbus, your standby speed was a nice solution.
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Old 30th Aug 2018, 01:38
  #103 (permalink)  
 
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Airspeed indication failure on take-off involving Airbus A330, 9M-MTK

Preliminary report is out...

The pitot probe covers were fitted on the aircraft’s three pitot probes by one of the engineering support personnel, as it was his understanding this was normal practice. He later reported that he advised the operator’s maintenance engineer that pitot probe covers were fitted during a brief exchange discussing turnaround tasks, but that the maintenance engineer did not directly respond. The maintenance engineer later reported that he did not recall hearing the advice, and he did not make an entry in the aircraft’s technical log to record that the covers had been fitted.

The presence of the pitot covers was not detected by the operator’s maintenance engineer or captain during separate external aircraft inspections.

Covers on during push
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Old 30th Aug 2018, 03:11
  #104 (permalink)  
 
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The quality of ground staff at Brisbane must truly be substandard. Not one person made any comment about the covers still being on during push back. There is not a single excuse which can be made to defend any of them.

As for the two pilots, one can only weep at their level of negligence and incompetence and wonder how on earth they managed to escape scrutiny for so long as to be able to retain positions on a flag carrier. Truly incomprehensible.
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Old 30th Aug 2018, 13:49
  #105 (permalink)  
 
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Originally Posted by Diavel View Post


Is it possible that the pitot covers actually were removed before pushback, and then the flight developed a serious hydraulic issue after takeoff, and the pitot covers refitted later. I know it sounds incredible, but to me as an A330 pilot, it seems even more incredible that they were able to take off with the pitotcovers on.
Diavel Let me see if I understand what your say. The covers were removed before they pushed back from the gate. Took off for their destination with the covers off. Developed a Hydraulic issue in flight. Then the pilot not flying climbs out the cockpit window in flight and puts the covers back on, then they land to find the covers on. Huh???
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Old 30th Aug 2018, 22:36
  #106 (permalink)  
 
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I think you'll find he meant that they departed, developed tech issue and landed without the covers on. Then a "diligent" member of ground crew replaced the covers.

Obviously, the pic posted above of the alleged pushback would indicate that this theory is incorrect... As one can clearly see the pitot covers in place and it is clearly stated in the initial report that the covers were found on the aircraft.

More concerning is this:

2331:38: The cockpit voice recorder (CVR) recorded that the captain called ‘100 knots’. The the aircraft’s recorded groundspeed at this time was 100 kt.
Data from the FDR showed that ADR1 first sensed airspeed above 30 kt at 2331:39. At rotation, the FDR recorded 38 kt airspeed from ADR1 and the airspeed from ADR3 had not yet reached 30 kt. ADR3 first sensed airspeed above 30 kt at 2331:54.
What was the captain reading? The g/s figure?

Last edited by RHSandLovingIt; 30th Aug 2018 at 22:48.
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Old 30th Aug 2018, 23:58
  #107 (permalink)  
 
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Some informed detail in todays article, may quash the theorists thinking the covers were installed on landing

Brissie times
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