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Search: Posts Made By: Oluf Husted
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Forum: Rumours & News
27th Feb 2009, 11:33
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

Engines hesitated due to "core-icing"?

Dear fcom,

I have earlier, 2/3, 8/4, 1-5/5 and 3-4/7 (July) 2008, been writing, on this thread, about my theory, that core-icing, due to an ineffective or "turned off" engine anti-ice system, had...
Forum: Rumours & News
4th Jul 2008, 20:25
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear BOAC,

I stand corrected, TAT it is! (What is the diff. at 250 kts in 10C. weather.?)

"A general lack of crew awareness and training concerning winter operations"

The above sentence was...
Forum: Rumours & News
3rd Jul 2008, 08:22
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear lomapaeso,

It was indeed: "Icing condition" during the last 10 minutes of BA38s career.

Ground temperature was +11 degrees C. and its RR engines flew in and out of broken clouds.
...
Forum: Rumours & News
2nd Jul 2008, 23:00
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Green-dot,

Thanks for the article: "High Altitude Engine Flame-outs" that tells us, we have been flying around not knowing the hard facts about engine icing. And that we still do, since...
Forum: Rumours & News
5th May 2008, 06:46
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear FullWings,

All other flights probably flew "straight and level" in a holding, or at some given flight level, at least three times, thus coming above flight idle for several minutes.

It has...
Forum: Rumours & News
4th May 2008, 05:51
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear barit1 and other PPruNers,

Thanks for your comments, since I am danish, you will have to excuse some of my word selections, but we seems to agree, that ice is the only "aerodynamic redesign"...
Forum: Rumours & News
3rd May 2008, 23:31
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Bernd and Airfoil,

Bernd, my engines also did spool-up a bit before before hesitating and starting to stall, then I throttled back and tried again and again it worked fourth time and took a...
Forum: Rumours & News
3rd May 2008, 20:43
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear TyroPicard ad airfoilmod,

I newer flew with RR engines, but my P & Ws on a MD-80 once had a very hard time getting up in RPMs with the front end of the engine all iced-up, it first...
Forum: Rumours & News
3rd May 2008, 19:44
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear beseiker, (Bernd)

Flight time from TOD to 780 ft. (incl. one holding) is app. 30 min, but the metal in the very front-end of the core engine was 10 degrees lower (due to the pressure drop)...
Forum: Rumours & News
2nd May 2008, 05:47
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Green-dot,

Point taken, the AD 2008-02-05 does involve ground fog icing conditions only, and that in e x t e n d e d periods of idle power.

The BA38 probably flew a very extended period at...
Forum: Rumours & News
1st May 2008, 22:12
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Oldlae,

The definition of a cloud could be: "Freezing Fog" or just "Fog" and the visibility is always lousy in fog, and that is what the AD warns about.

Oluf
Forum: Rumours & News
1st May 2008, 20:21
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear lomapaseo,

You and a few others think, that I should wait for the AAIB or drop my theory of possible engine ice produced "hesitation"

OK, can you explain, why the FAA issued an AD on the...
Forum: Rumours & News
1st May 2008, 20:09
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear lomapaseo,

You and a few others think, that I should wait for the AAIB or drop my theory of possible engine ice produced "hesitation"

OK, can you explain, why the FAA issued an AD on the...
Forum: Rumours & News
1st May 2008, 16:07
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear 3Greens,

Any descriptive of the Anti-ice systems (on most jet engines) claims to work, also at idle power, but that is mostly to comply with the certification, not in the real world.

P & W...
Forum: Rumours & News
1st May 2008, 15:47
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Dont Hang Up,

During my 30 years of descents, I almost never did one without some level-offs or "Holdings", but I think, that was what the BA38 crew did.

And further more, I was almost...
Forum: Rumours & News
1st May 2008, 15:36
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Green-dot,

I is my assumption, since also i only have the AAIB feb. report, but if BA38
just had some speed above "Holding Speed" when entering Lamborne at FL110 and was cleared to FL90...
Forum: Rumours & News
1st May 2008, 14:59
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Starbear,

The jet engine "Lips", the compressors big-fan blades and the very first part
of the "core-engine" is kept above the freezing point by hot bleed air, if you remember to turn the...
Forum: Rumours & News
1st May 2008, 14:20
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear Me Myself,

"Unknowingly" means, that crews very seldom stay at idle power during the whole descent, since ATC req. some "level flight" or "holding".

But the BA38 crew had a very light...
Forum: Rumours & News
1st May 2008, 14:01
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear borghha,

Right, no (fully computerized) "Green Approach" to me, but a late descent and a less than idle power setting when the anti-ice systems "on" is OK!

It is also valid, when airborne,...
Forum: Rumours & News
1st May 2008, 13:37
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear davecr,

Anytime I had speed to "bleed of" but at 1ooo ft, (or at the very latest) 500 ft, pilots have to be "stabilized" and so it seems to be with the BA38 crew.

Oluf
Forum: Rumours & News
1st May 2008, 13:31
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear davecr,

According to the AAIB report, page 2, from feb. 2008 (latest): "The Engines initially responded but, at a hight of about 72o ft, the thrust of the right engine reduced. Some seven...
Forum: Rumours & News
1st May 2008, 08:44
Replies: 3,239
Views: 1,137,481
Posted By Oluf Husted

BA38s engines "Hesitated"

Dear fellow PPRuNers,

Since the BA38 crew, unknowingly, flew a: "Green Approach" (idle) with the engine anti-ice system in "Auto" they probably had some core engine icing, that caused the...
Showing results 1 to 22 of 22


 
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