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20th Mar 2019, 16:15
Replies: 354
Views: 352,343
Posted By GlobalNav

Great post! A design isn’t complete when the...

Great post! A design isn’t complete when the system just performs its intended function. It is important, and not trivial, to understand how it might behave when it or related systems fail, to...
20th Mar 2019, 16:06
Replies: 53,844
Views: 7,546,126
Posted By GlobalNav

Congestion? More runways? Nonsense!

Congestion? More runways? Nonsense!
20th Mar 2019, 15:41
Replies: 53,844
Views: 7,546,126
Posted By GlobalNav

Merging and spacing is truly achieved. ...

Merging and spacing is truly achieved.

This is how we respond to the demise of the A380.
Forum: Tech Log
20th Mar 2019, 15:19
Replies: 21
Views: 1,748
Posted By GlobalNav

Chapter 5 may be of particular interest.

Chapter 5 may be of particular interest.
19th Mar 2019, 15:34
Replies: 2,447
Views: 6,135,256
Posted By GlobalNav

And oversight is not as easy as it looks on...

And oversight is not as easy as it looks on paper. It gets reduced from technical examination to paper audits, turns engineers into clerks, and insulates the “overseers” from the technical details. ...
19th Mar 2019, 15:26
Replies: 19
Views: 11,481
Posted By GlobalNav

The “brain drain” of the 90’s had tremendous and...

The “brain drain” of the 90’s had tremendous and long lasting impact on Boeing. The greatest asset Boeing, of old, had was its amazing collection of brilliant and experienced engineers. They were...
19th Mar 2019, 15:18
Replies: 98
Views: 105,012
Posted By GlobalNav

Normally, I think, the grounding reduces...

Normally, I think, the grounding reduces immediate risk, but the pressure to approve a fix and get the airplanes flying is stronger than ever. Not sure, but I feel encouraged that the third party...
Forum: Tech Log
18th Mar 2019, 20:23
Replies: 21
Views: 1,748
Posted By GlobalNav

Tranport airplanes, actually the “type design” of...

Tranport airplanes, actually the “type design” of transport airplanes, are certified by the FAA under 14 CFR Part 25. Other countries have similar, if not identical certification requirements. ...
18th Mar 2019, 16:16
Replies: 354
Views: 352,343
Posted By GlobalNav

The possibility that a single sensor failure can...

The possibility that a single sensor failure can lead to a potentially catastrophic result must not be possible. In system safety terms, the probability of such an event must be Extremely...
16th Mar 2019, 22:36
Replies: 2,447
Views: 6,135,256
Posted By GlobalNav

Maybe. But so much of the certification work is...

Maybe. But so much of the certification work is done by designees (Boeing employed) and the truth is that the FAA executives who put that system in place are mostly retired, some employed in the...
16th Mar 2019, 22:25
Replies: 15
Views: 2,833
Posted By GlobalNav

I stand corrected, inspite of earlier stories in...

I stand corrected, inspite of earlier stories in the media. Why did I believe them? Duh
16th Mar 2019, 01:01
Replies: 2,447
Views: 6,135,256
Posted By GlobalNav

Agreed. This failure mode, whatever it turns out...

Agreed. This failure mode, whatever it turns out to be, has demonstrated catastrophic consequences, possibly in two cases The system safety of the type design requires improvement. Training is not...
14th Mar 2019, 21:39
Replies: 15
Views: 2,833
Posted By GlobalNav

Exactly. And someone made sure there would be no...

Exactly. And someone made sure there would be no more F-22s by destroying the tooling. Should do that with F-15.
14th Mar 2019, 21:37
Replies: 354
Views: 352,343
Posted By GlobalNav

Maybe it’s lunch time.

Maybe it’s lunch time.
13th Mar 2019, 20:44
Replies: 2,447
Views: 6,135,256
Posted By GlobalNav

No doubt political pressure to ground the Max...

No doubt political pressure to ground the Max fleet from the president congress was considerable, as was commercial pressure not to from Boeing. The new factual evidence was apparently sufficient to...
13th Mar 2019, 20:33
Replies: 2,447
Views: 6,135,256
Posted By GlobalNav

FAA needs to require Boeing to remove this "speed...

FAA needs to require Boeing to remove this "speed bump." That some alert and competent pilots are able to overcome it is wonderful, but still an insufficient level of safety as attested to by...
8th Mar 2019, 01:59
Replies: 27
Views: 5,029
Posted By GlobalNav

Circuit Protection

In spite of common practice and years ago even part of design and approved procedures, there is a safety objective behind avoiding excessive cycling of circuit breakers. It weakens them over time...
Forum: Tech Log
27th Feb 2019, 15:22
12th Feb 2019, 18:52
Replies: 6
Views: 4,474
Posted By GlobalNav

Indecency by a footballer? How unlikely is that?

Indecency by a footballer? How unlikely is that?
12th Feb 2019, 18:34
Replies: 41
Views: 8,139
Posted By GlobalNav

The C-141A had wiring for an Astrotracker but the...

The C-141A had wiring for an Astrotracker but the fleet was not so equipped. I was a Starlifter nav from 1974-1980. We had an ASN-35 analog along track-cross track computer fed by the Doppler radar,...
6th Feb 2019, 15:37
Replies: 28
Views: 21,131
Posted By GlobalNav

Well, they (Boeing) won't stop trying. SST, HSCT...

Well, they (Boeing) won't stop trying. SST, HSCT and now Aerion? Aerion has been at it for a long long time. First flight by 2023? Maybe. Certification by 2025, yeah right. They would have to...
4th Feb 2019, 17:29
Replies: 28
Views: 21,131
Posted By GlobalNav

Supersonic airline development is another tried...

Supersonic airline development is another tried and tested method of making small fortunes out of large ones. It is a wonderfully effective black hole for capital investment and can go on for...
2nd Feb 2019, 20:17
Replies: 51
Views: 38,263
Posted By GlobalNav

The P-8 is derived from a Part 25 (CS25)...

The P-8 is derived from a Part 25 (CS25) compliant airplane (aeroplane), but the P-8 design is not certified under Pt 25. I would be surprised if the British version of the P-8 could be certified...
28th Dec 2018, 18:16
Replies: 86
Views: 25,629
Posted By GlobalNav

Heck, we hardly know what's going on in DC, or at...

Heck, we hardly know what's going on in DC, or at least have become so calloused to the nonsense we won't do anything about it.
24th Dec 2018, 15:33
Replies: 2,451
Views: 414,540
Posted By GlobalNav

With no one with gravitas and integrity remaining...

With no one with gravitas and integrity remaining in the cabinet, i.e., no adult standing in the room, let alone an intellectual national security expert, who is no stranger to the fox hole and front...
Showing results 1 to 25 of 425
 


 
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