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Search: Posts Made By: Lyman
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Forum: Tech Log
8th Jan 2013, 18:48
Replies: 183
Views: 74,224
Posted By Lyman

As remote as it may sound, with simultaneity...

As remote as it may sound, with simultaneity comes the occasional surprise.

Conical Plates? I would first look to reject something peculiar to altitude, such as minute deformation of the pressure...
Forum: Tech Log
7th Jan 2013, 22:37
Replies: 183
Views: 74,224
Posted By Lyman

It was not ICE that crumpled 038 into a ball. At...

It was not ICE that crumpled 038 into a ball. At the worst, it was contributory. The problem was a mechanical deficiency (sic) that was modded/remedied in a device not intended to de ice, the FUEL...
Forum: Tech Log
7th Jan 2013, 16:57
Replies: 183
Views: 74,224
Posted By Lyman

A33Zab... Yes, symmetrical positioning of...

A33Zab...

Yes, symmetrical positioning of redundant sensors is common. 'Commonplace' and 'traditional' does not mean such positioning is not arbitrary.

Positioning sensors such that their...
Forum: Tech Log
6th Jan 2013, 20:34
Replies: 183
Views: 74,224
Posted By Lyman

I think the probes discussion is very important....

I think the probes discussion is very important. However the immediate problem is what the system will do with corrupt, but stable data.

Since we have evidences of problems that are superior to...
Forum: Tech Log
1st Jan 2013, 15:35
Replies: 183
Views: 74,224
Posted By Lyman

jcjeant That is the issue, not dissembling...

jcjeant

That is the issue, not dissembling and lame attempts to minimize rhe hazard.

AB have built an a/c that is virtually completely dependent on processed data, the exclusion of mitigating...
Forum: Tech Log
31st Dec 2012, 15:50
Replies: 183
Views: 74,224
Posted By Lyman

Bonjour jcj... As I see it. The Thales were...

Bonjour jcj...

As I see it. The Thales were a serious problem, hence the AD. Air France was slow rolling the AD, and Thales killed AF 447.

A single Titanium piece killed Concorde, end of story....
Forum: Tech Log
31st Dec 2012, 15:29
Replies: 183
Views: 74,224
Posted By Lyman

Dozy "DozyWannabe @Lyman - It was a general...

Dozy

"DozyWannabe @Lyman - It was a general reference to historical pitot tube blockage-related problems, not a specific comparison to the Thales AA issue."

Thanks for the disclaimer, had you...
Forum: Tech Log
31st Dec 2012, 15:02
Replies: 183
Views: 74,224
Posted By Lyman

NWA accident you refer to was caused by pitot...

NWA accident you refer to was caused by pitot heat selected OFF prior to take off, and not selected ON thereafter. Perhaps a poor example then, here, since the problematic A330 probes were operating...
Forum: Tech Log
31st Dec 2012, 13:34
Replies: 183
Views: 74,224
Posted By Lyman

It is a puzzle. For sixty years, the USAF had...

It is a puzzle. For sixty years, the USAF had been flying to 50,000 feet, and experienced none of the "hitherto unknown characteristics of fuel icing".

Then BA038. Then Airbus is plagued by ice...
Forum: Tech Log
30th Dec 2012, 22:18
Replies: 183
Views: 74,224
Posted By Lyman

My bad. I agree. Experience is beneficial related...

My bad. I agree. Experience is beneficial related to ts breadth.

I do not consider "predictability" a "tendency". I can't source it really, but have always associated a 'tendency' with a bad habit...
Forum: Tech Log
30th Dec 2012, 21:41
Replies: 183
Views: 74,224
Posted By Lyman

Aircraft most definitely have tendencies. Ignore...

Aircraft most definitely have tendencies. Ignore them at your great risk.

As in "landing light", another thread, or "Twitchy in roll direct", from 447.

Or, "watch it, lest you roll it into a...
Forum: Tech Log
29th Dec 2012, 23:55
Replies: 183
Views: 74,224
Posted By Lyman

From the standard install I see on the 330, does...

From the standard install I see on the 330, does the advantage come from a smaller diameter pivot at the vane mount? This would seem to give the vane more mechanical advantage against accretion at...
Forum: Tech Log
29th Dec 2012, 16:41
Replies: 183
Views: 74,224
Posted By Lyman

Let me ask the question another way... Since...

Let me ask the question another way...

Since no AOA display exists for the pilots, and AoA is critical to the flight path, how is "UnreliableAoA" not a far more problematic abnormal than "UAS"?...
Forum: Tech Log
21st Dec 2012, 17:27
Replies: 183
Views: 74,224
Posted By Lyman

Did the pilots get your memo?

Did the pilots get your memo?
Forum: Tech Log
21st Dec 2012, 16:22
Replies: 183
Views: 74,224
Posted By Lyman

Four years ago, AF pilots threatened strike if AF...

Four years ago, AF pilots threatened strike if AF did not immediately obey the AD requiring pitot probe replacement.

After 228 people were killed in AF447....

Once bitten. Twice shy...
Showing results 1 to 15 of 15


 
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