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Search: Posts Made By: Green-dot
Showing results 1 to 35 of 95
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Forum: Rumours & News
21st Feb 2010, 13:05
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

BA009, 747-236B G-BDXH 'City of Edinburgh' June...

BA009, 747-236B G-BDXH 'City of Edinburgh' June 24, 1982.

The aircraft was at 13,500 ft when the first engine, engine No. 4, burst back to life. Towards 12,000ft the second engine, engine No. 3...
Forum: Rumours & News
21st Feb 2010, 08:25
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

lomapaseo wrote: Correction....

lomapaseo wrote:





Correction. It was an Austrian F70 that landed in a snow covered field. Although the long flight duration in moderate icing in connection with low engine thrust was a...
Forum: Rumours & News
3rd Jan 2010, 22:25
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

@ maynardGkeynes, Thanks, movement...

@ maynardGkeynes,



Thanks, movement is indeed what the report uses for system description. This seems to cover the issue when movement is interpreted as "any" movement. Perhaps the fuel...
Forum: Rumours & News
3rd Jan 2010, 00:35
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Question remains, would it be recorded the moment...

Question remains, would it be recorded the moment the spars moved from their open position or would a record be made only if the spars reached their closed position? In other words, if an uncommanded...
Forum: Rumours & News
6th Dec 2009, 22:46
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Listening to the ATC tape, it illustrates how...

Listening to the ATC tape, it illustrates how precious little time the crew really had between landing clearance and landing short. Less than 30 seconds (closer to 20 seconds if the 7 seconds between...
Forum: Rumours & News
29th Apr 2009, 07:29
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

When reporting the ATM anomaly to the bank I was...

When reporting the ATM anomaly to the bank I was met with the same cynical reaction. The reaction was that it was impossible radiation from a mobile phone could cause the ATM to fail. "It was just a...
Forum: Rumours & News
26th Apr 2009, 11:08
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Just to reflect on the ice theory. Last week I...

Just to reflect on the ice theory. Last week I personally experienced something totally unrelated to this incident but then perhaps not.

While extracting some money from an ATM (automatic teller...
Forum: Rumours & News
15th Jan 2009, 18:28
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

If so, evidence of this would have been found...

If so, evidence of this would have been found somewhere in the engine feed lines, FOHEs or fuel filters in the fuel delivery system, which according to the AAIB reports released sofar, is not the...
Forum: Rumours & News
10th Dec 2008, 19:46
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Under normal conditions, bringing the flaps up...

Under normal conditions, bringing the flaps up from 30 deg. to 20 deg. would take the engines out of approach idle (with thrustlevers at idle position and engine anti-ice off), reducing thrust to...
Forum: Rumours & News
30th Nov 2008, 11:47
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

whattimedoweland, Nice flight deck picture....

whattimedoweland,

Nice flight deck picture.

Does anyone happen to have a picture of the BA B777 first class cabin (four class cabin configuration), preferrably taken from the rear in the...
Forum: Rumours & News
19th Nov 2008, 19:36
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

@ wilyflier, Not to be nit-picking,...

@ wilyflier,



Not to be nit-picking, to my knowledge the Bristol Proteus was indeed prone to icing but was married to the Britannia, not the Viscount. The Viscount had RR Darts.


@gas...
Forum: Rumours & News
12th Nov 2008, 16:59
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Or perhaps "hypothesis", an unproved theory,...

Or perhaps "hypothesis", an unproved theory, tentatively accepted to explain certain facts or to provide a basis for further investigation.


Green-dot
Forum: Rumours & News
7th Nov 2008, 10:51
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Flaperon777, Yes, basically they are...

Flaperon777,


Yes, basically they are centre tank boost pumps but they have a dual function and therefore are officially named Override / Jettison pumps because they:
a. deliver a higher boost...
Forum: Rumours & News
4th Nov 2008, 22:14
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Not quite, to be more precise the centre tank...

Not quite, to be more precise the centre tank override jettison (OJ) pumps are switched off manually at approx. 800kg of fuel remaining in the centre tank. Float-operated shutoff valves prevent fuel...
Forum: Rumours & News
4th Nov 2008, 17:19
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

There are hydraulic oil-to-fuel heat exchangers. ...

There are hydraulic oil-to-fuel heat exchangers.
- 1 heat exchanger in the left main tank for the left hydraulic system,
- 2 heat exchangers in the right main tank for the center and right...
Forum: Rumours & News
12th Oct 2008, 11:40
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

I have read all the reports. Ice...

I have read all the reports.

Ice accumulation is a hypothesis, nothing more.

No more than "backdoor coupling."



Green-dot
Forum: Rumours & News
11th Oct 2008, 10:41
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Any chance there is a correlation in progress...

Any chance there is a correlation in progress between the investigation authorities with respect to the BA38 and QF72 events regarding possible uncommanded system behaviour?


Green-dot
Forum: Rumours & News
20th Sep 2008, 12:49
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

However unlikely (it had crossed my mind as...

However unlikely (it had crossed my mind as well), it could be a possibility but the AAIB most likely will have investigated such a scenario. Fuel in storage tanks, fuel hydrants and/or bowsers are...
Forum: Rumours & News
13th Sep 2008, 12:39
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

The 777 FDR receives and stores selected...

The 777 FDR receives and stores selected parameters from various systems and sensors (to know which parameters must be equivalent to drawing Excalibur from the stone). A digital flight data...
Forum: Rumours & News
11th Sep 2008, 22:27
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

FAR 121, Appendix M FDR parameters

FAR 121, App. M, Item #43. Additional engine parameters:
There are several parameters such as vibration level, N2, EGT, Fuel flow, N3 and:

Fuel cut-off lever position. Is this the only parameter...
Forum: Rumours & News
7th Sep 2008, 02:38
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Swedish Steve, As I have sumped fuel...

Swedish Steve,



As I have sumped fuel tanks on aircraft many times and with similar findings as you discribe. Most of the time there was no visual indication of water what so ever. The odd...
Forum: Rumours & News
6th Sep 2008, 12:56
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Posted by ChristiaanJ, ref. post #1782: ...

Posted by ChristiaanJ, ref. post #1782:



Please read the report(s) again.

AAIB interim report G-YMMM, Page 2, second column:
"The aircraft had previously operated a flight on 14 january...
Forum: Rumours & News
4th Sep 2008, 21:15
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

A very informative and well written interim...

A very informative and well written interim report. It answers many questions with respect to findings on several systems and subsystems.

Specifically with reference to the spar valves, such as...
Forum: Rumours & News
2nd Sep 2008, 08:11
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

In any investigation like this, in order to find...

In any investigation like this, in order to find the facts and the reasons why, the time it takes to reach a conclusion is of secondary importance.

We do not control the day, the day is...
Forum: Rumours & News
17th Aug 2008, 01:21
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

777fly: I agree, a scenario such as you describe...

777fly: I agree, a scenario such as you describe could be amongst the plausible possibilities if both left and right engine feed systems had low manifold pressure due to ice contaminated boost pumps...
Forum: Rumours & News
15th Aug 2008, 20:00
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

At low altitude, even if the pumps would have...

At low altitude, even if the pumps would have encountered such conditions as you describe, suction feed bypass valves in the engine feed system would have opened to feed the engines. Those are check...
Forum: Rumours & News
11th Aug 2008, 05:57
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Such as temporary, uncommanded closing of the...

Such as temporary, uncommanded closing of the spar valves perhaps?

In the Questions section of PPRune an incident was briefly posted regarding a B757 with an engine rollback immediately after...
Forum: Rumours & News
10th Aug 2008, 16:42
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Snoop When they have tested it and find absolutely...

When they have tested it and find absolutely nothing out of the ordinary with it, they can put it all back in. :ok:


Green-dot
Forum: Rumours & News
10th Aug 2008, 13:52
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

To be clear, if a scoop or flame arrestor becomes...

To be clear, if a scoop or flame arrestor becomes blocked, a pressure relief valve in the surge tank opens to make a vent.

There is a pressure relief valve in the inboard access door of each...
Forum: Rumours & News
9th Aug 2008, 18:40
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

To Chris Scott: The OEM AMM...

To Chris Scott:



The OEM AMM officially refers to it as the Engine Fuel Suction Feed.

Swedish Steve, CONF iture and I had analysed that there was sufficient fuel on board in the main...
Forum: Rumours & News
9th Aug 2008, 01:52
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

If the boostpump discharge check valve or the...

If the boostpump discharge check valve or the inlet valve are suspect:

- That would suggest that all 4 boost pumps in the LH/RH main tanks failed to deliver due to above suspect reason (as...
Forum: Rumours & News
27th Jul 2008, 21:07
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Exactly.:ok: That is why i wondered how Bis47...

Exactly.:ok:
That is why i wondered how Bis47 came to such a conclusion.:confused:



Green-dot
Forum: Rumours & News
27th Jul 2008, 11:53
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Bis47: However, water draining checks...

Bis47:


However, water draining checks were performed just prior to refuelling for departure to Beijing on January 15th (see AAIB special bulletin S1-2008, page 5) and could you please explain...
Forum: Rumours & News
8th Jul 2008, 11:17
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Or was the excess of fuel in the burners in this...

Or was the excess of fuel in the burners in this scenario a mix of fuel, ice and water?

Thawing Ice, perhaps shedding from the compressor stages as the engines revved up from approach idle to a...
Forum: Rumours & News
3rd Jul 2008, 20:27
Replies: 3,239
Views: 1,137,419
Posted By Green-dot

Dear Oluf, Having re-read our May 1st and...

Dear Oluf,

Having re-read our May 1st and 2nd exchanges i can see (as i did then) your point regarding core icing. Although i keep several options open to the cause of the BA038 accident, the...
Showing results 1 to 35 of 95
 
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