Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
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Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#2I honestly don’t even know anymore if I’m living in a cracked / badly modded version of the sims, how can one wake up in the morning and seek for a safety exemption regarding
I quote the article: She noted the exemption Boeing had sought "involves an anti-ice system that can overheat and cause the engine nacelle to break apart and fall off. This could generate fuselage-penetrating debris, which could endanger passengers in window seats behind the wing."
Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#3I don't understand. Is Boeing using a different anti-ice system on the engines for the MAX 7 compared to the other MAX variants? They use the same engines, no? Why would the MAX 7 need a safety exemption for a system that should be identical across the 4 variants?
Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#4I honestly don’t even know anymore if I’m living in a cracked / badly modded version of the sims, how can one wake up in the morning and seek for a safety exemption regarding I quote the article: She noted the exemption Boeing had sought "involves an anti-ice system that can overheat and cause the engine nacelle to break apart and fall off. This could generate fuselage-penetrating debris, which could endanger passeng…
A $20 toaster has overheat detection technology. Presumably other planes are doing this already. I am not understanding how there is a novel engineering problem to solve that could not be incorporated into the release.
Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#5I honestly don’t even know anymore if I’m living in a cracked / badly modded version of the sims, how can one wake up in the morning and seek for a safety exemption regarding I quote the article: She noted the exemption Boeing had sought "involves an anti-ice system that can overheat and cause the engine nacelle to break apart and fall off. This could generate fuselage-penetrating debris, which could endanger passeng…
While the probability for this flaw to manifest is probably on the order of magnitude of that of being hit by lightning while being eaten by a shark, I'm with you.
Safety exemptions are there for a reason and this doesn't sound like a fitting example.
Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#6I honestly don’t even know anymore if I’m living in a cracked / badly modded version of the sims, how can one wake up in the morning and seek for a safety exemption regarding I quote the article: She noted the exemption Boeing had sought "involves an anti-ice system that can overheat and cause the engine nacelle to break apart and fall off. This could generate fuselage-penetrating debris, which could endanger passeng…
A $20 toaster has overheat detection technology. Presumably other planes are doing this already. I am not understanding how there is a novel engineering problem to solve that could not be incorporated into the release.
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Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#7> Boeing said late on Monday "while we are confident that the proposed time-limited exemption for that system follows established FAA processes to ensure safe operation, we will instead incorporate an engineering solution that will be completed during the certification process."
Anybody else get the exact opposite of a warm fuzzy feeling about the specific wording choice used by Boeing there?
Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#8I don't understand. Is Boeing using a different anti-ice system on the engines for the MAX 7 compared to the other MAX variants? They use the same engines, no? Why would the MAX 7 need a safety exemption for a system that should be identical across the 4 variants?
The AD applies to all 737s using that same engine: https://www.federalregister.gov/documents/2023/08/10/2023-17...
However, the MAX 8 and MAX 9 had already been certified and delivered before this AD was published, while the MAX 7 had delays in certification.
Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#9I honestly don’t even know anymore if I’m living in a cracked / badly modded version of the sims, how can one wake up in the morning and seek for a safety exemption regarding I quote the article: She noted the exemption Boeing had sought "involves an anti-ice system that can overheat and cause the engine nacelle to break apart and fall off. This could generate fuselage-penetrating debris, which could endanger passeng…
Not necessarily disagreeing with your assessment but I guess all these things are about statistical probabilities. If the chance of this happening is small enough and the possible "worst case" outcome is tolerable, it gets a tick.
Re: Boeing withdraws bid for safety exemption for Boeing 737 MAX 7
#10I don't understand. Is Boeing using a different anti-ice system on the engines for the MAX 7 compared to the other MAX variants? They use the same engines, no? Why would the MAX 7 need a safety exemption for a system that should be identical across the 4 variants?
The MAX 8 and 9 have the same issue[0], and have a temporary exemption with guidance to the pilots on when not to use the deicing. I think the idea is that this is an issue that can be managed, and the cost of grounding hundreds of planes for such an issue is substantially higher than the cost of delaying deliveries for a plane with no existing fleet. That different cost also leads to a different tradeoff for the two cases.
[0] https://www.federalregister.gov/documents/2023/08/10/2023-17...