9V-MBA is going on a test flight as MI8880, as of 11/3/2021. Maybe it's going to come back into service soon?
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SIA 737 MAX Aircraft
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Believed this plane flew back from Alice Springs on 30 Dec 2020. It had then completed a 2-hour test flight from Alice Springs, taking it up to 37,000ft over Australia’s Northern Territory and even over Queensland, before landing back at the same airport around 4.40pm.
The 738 Maxes will have to wait for recertification of the type approval by the Civil Aviation Authority of Singapore (CAAS), although the US FAA and European EASA have already cleared the Max for passenger flights. However think no other Asian countries have lifted the ban on the 737 maxes.Last edited by flyguy; 11 March 2021, 07:40 PM.
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Originally posted by H1090 View PostThe fundamental physics changes to the aircraft cannot be solve by software changes.
https://www.seattletimes.com/busines...iation-honors/
Am I going to fly on the MAX? No, because I don't trust the culture at Boeing around the MAX programme and the FAA certification, but it absolutely can be solved by technology.
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Originally posted by shikhargpt View PostAm I going to fly on the MAX? No, because I don't trust the culture at Boeing around the MAX programme and the FAA certification, .
Pardon my curiosity.
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Originally posted by shikhargpt View PostYes they can. The Boeing 747-8 also had a physics-related issue with divergent wingtip flutter that was corrected by an update to the fly-by-wire functionality.
https://www.seattletimes.com/busines...iation-honors/
The 737Max on the other hand faces a centre of gravity issue that has very limited scope to resolve. Boeing's FBW answer to this was MCAS which turned out to be a disaster. The A346 faced a similar problem when it came out and Airbus at one point limited the weight of J class seats and fwd cargo capacity to counter it.
Even the current solution for MCAS, from what I gather, is the cessation of continous nose down input to the pitch trim and an avenue for the pilot to cancel it.
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The 737 Max is the most extensively tested plane ever and there are not just software changes alone as its now relies on 2 AOA sensors instead of one previously and there's a alarm indicator of an fault. And the main thing is that pilots now have to be trained on how to turn off the MCAS and trained in flight simulators too - which was not the case as before sadly for the 2 738s maxes that crashed, as the aircraft can be flown manually without problem when the MCAS is faulty.Last edited by flyguy; 12 March 2021, 06:13 PM.
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Originally posted by boing View PostI'm afraid this is not quite a fair comparison. B748 faced an aerodynamics issue in particular and modern FBW can solve this easily.
The 737Max on the other hand faces a centre of gravity issue that has very limited scope to resolve. Boeing's FBW answer to this was MCAS which turned out to be a disaster. The A346 faced a similar problem when it came out and Airbus at one point limited the weight of J class seats and fwd cargo capacity to counter it.
Even the current solution for MCAS, from what I gather, is the cessation of continous nose down input to the pitch trim and an avenue for the pilot to cancel it.
With the MAX, the key engineering concept guiding any product development, however, is one that Boeing ignored in the first place is redundancy and operator training. Single AoA sensor to dictate MCAS input is one of the most shocking things I have ever known of in aviation based on prevailing engineering wisdom, especially in aviation where double and triple redundancies are minimum. This is not mentioning other issues with Boeing such as the engineers having concerns overruled by management and the certification model in the US with the FAA. That's why, for me, the MAX is tainted for a long long time. Maybe in a decade when there have been no incidents I may trust the aircraft.
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Originally posted by sbs2716g View Post99% of the paxes won’t know the plane type that they are flying.
And I guess SQ might put it as 737 instead.
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Maybe, but if you read Tim Clark's scathing interview on Boeing, I'd be hard pressed to find any confidence in flying a MAX and even their already-delivered 787s.
https://theaircurrent.com/industry-s...n-737-max-787/
But I think we've digressed a lot from this original topic on SQ MAXs.
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