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1st Oct 2017, 09:57
Replies: 559
Views: 578,655
Posted By Flight Safety

Shaft missing

Looking at the photos, the fan shaft appears to be missing, indicating a shaft failure and fan departure. I imagine a shaft failure would result in a spinning fan departing forward then falling...
16th May 2017, 16:40
Replies: 37
Views: 43,725
Posted By Flight Safety

Don't know if he overshot the runway center line,...

Don't know if he overshot the runway center line, but he lost it on the turn to final. Looks like a classic stall/spin. One eyewitness said he saw the aircraft in a 90 degree bank, then saw it roll...
29th Nov 2016, 20:06
Replies: 1,096
Views: 1,207,093
Posted By Flight Safety

Perhaps someone should be looking into the flight...

Perhaps someone should be looking into the flight history of this pilot/airline owner who was flying the plane, to see how much recent experience he had. It's possible that he got distracted with an...
Forum: Tech Log
30th Jul 2012, 19:42
Replies: 118
Views: 29,260
Posted By Flight Safety

Right, don't know why I didn't look there. :O

Right, don't know why I didn't look there. :O
Forum: Tech Log
30th Jul 2012, 18:40
Replies: 118
Views: 29,260
Posted By Flight Safety

787 engine failure in Charleston, SC

Surprised this hasn't been posted yet.

Boeing 787 Engine Failure Sparks Fire at Charleston Airport | Aviation International News...
10th Jul 2012, 21:27
Replies: 1,316
Views: 377,213
Posted By Flight Safety

Stall warning logic

I don't understand the stall warning logic of the A330. If you have an indicated airspeed of less than 60kts, and there is no weight on wheels (i.e. the airplane knows it's airborne), aren't you...
Forum: Tech Log
24th May 2012, 20:58
Replies: 1
Views: 1,522
Posted By Flight Safety

A380 wing fixes - Static load test results

Interesting article on Flight Global regarding Airbus plans to fix the rib feet cracking issue. Sounds like they plan to make extensive mods to a large number of wing ribs in each wing, including...
19th Jan 2012, 23:09
Replies: 439
Views: 295,037
Posted By Flight Safety

If the CEO of Ethiopian Airlines is going to...

If the CEO of Ethiopian Airlines is going to react badly to the official accident report and engage in a misguided public relations battle, instead of doing something constructive about the airline's...
Forum: Tech Log
29th Dec 2011, 13:52
Replies: 155
Views: 38,280
Posted By Flight Safety

Oggers, I'm reposting your Otto cycle diagram...

Oggers, I'm reposting your Otto cycle diagram from your interesting post #118.

http://upload.wikimedia.org/wikipedia/commons/c/cf/P-V_otto.png

Work accomplished can be seen in the diagram....
Forum: Tech Log
9th Dec 2011, 17:24
Replies: 30
Views: 5,509
Posted By Flight Safety

Full wings, did you read update #2 of the Google...

Full wings, did you read update #2 of the Google car link you posted? It's interesting.
Forum: Tech Log
8th Dec 2011, 22:54
Replies: 16
Views: 2,947
Posted By Flight Safety

Here's another one, the 747 Halifax accident from...

Here's another one, the 747 Halifax accident from 2004.

ASN Aircraft accident Boeing 747-244B (SF) 9G-MKJ Halifax International Airport, NS (YHZ)...
Forum: Tech Log
8th Dec 2011, 22:10
Replies: 30
Views: 5,509
Posted By Flight Safety

Mathfox and Vapilot2004 both make good points....

Mathfox and Vapilot2004 both make good points. Computers are good at the boring and repetitious (via programming), while humans are good at the adaptive and unpredictable (via insight and intuition)....
Forum: Tech Log
8th Dec 2011, 21:12
Replies: 24
Views: 8,373
Posted By Flight Safety

I've often seen a small shock wave just inboard...

I've often seen a small shock wave just inboard of the nacelle on a 737NG, just aft of the leading edge on top of the wing.
Forum: Tech Log
29th Nov 2011, 19:13
Replies: 155
Views: 38,280
Posted By Flight Safety

Barit1, I believe the J58 of the Blackbird worked...

Barit1, I believe the J58 of the Blackbird worked the way you described. Accord to Ben Rich, 80% of the power produced by the J58 at Mach 3.2 came from the resulting ram effect.
Forum: Tech Log
29th Nov 2011, 18:13
Replies: 155
Views: 38,280
Posted By Flight Safety

Actually, both ramjets and scramjets still...

Actually, both ramjets and scramjets still require the "compressor" function, as they are both still heat engines using external oxygen for combustion. It's just that the "compressor" is external to...
Forum: Tech Log
29th Nov 2011, 11:31
Replies: 155
Views: 38,280
Posted By Flight Safety

Other related tidbits: Volumetric Efficiency...

Other related tidbits:

Volumetric Efficiency - Primarily related to power production. The amount of air and oxygen pumped through a given engine's physically limited size, determines the amount of...
Forum: Tech Log
29th Nov 2011, 00:11
Replies: 155
Views: 38,280
Posted By Flight Safety

Thermal to Kinetic Energy

All, a fun thread, but all of you are missing an important piece of information, the direct relationship between thermal energy and mechanical kinetic energy.

I'll skip the reason for a...
18th Sep 2011, 19:58
Replies: 458
Views: 150,112
Posted By Flight Safety

Adequate Testing

Given the description of the 1998 event, I wonder if there's adequate testing of these aircraft after modifications have been made to the airframes. Given that the purpose of the mods is to increase...
18th Sep 2011, 17:42
Replies: 458
Views: 150,112
Posted By Flight Safety

When it happened in 1998

Description of similar event for P51 Voodoo Chile in 98.

Voodoo - 98 NCAR (http://www.warbird.com/voodoo.html)

http://www.warbird.com/voodoo3.jpg

Interesting link previously posted by...
9th Sep 2011, 18:19
Replies: 159
Views: 33,077
Posted By Flight Safety

Example of Confused Over Reliance on Automation

This is an interesting article from Aviation Week:

High-Altitude Upset Recovery | AVIATION WEEK...
5th Sep 2011, 22:09
Replies: 159
Views: 33,077
Posted By Flight Safety

This problem is not really as hard to solve as...

This problem is not really as hard to solve as some believe, except getting the airlines to go along with it and to put up the cash to fund it.

TacomaSailor is dead on correct. As an IT...
Forum: Tech Log
30th May 2011, 17:18
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

Right Way Up, about as likely as 3 engines...

Right Way Up, about as likely as 3 engines failing at the exact same time in the exact same way, not very likely.
Forum: Tech Log
30th May 2011, 17:08
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

stall warning

Why would the stall warning be programmed to stop if the AOA indication is deemed unreliable below 60kts? Doesn't it seem intuitive that if a 200t jet transport has an IAS of < 60kts (and WOW says...
Forum: Tech Log
30th May 2011, 04:36
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

Maintaining the previous configuration, should...

Maintaining the previous configuration, should maintain the airspeed.

Seems to me if you're at cruise altitude and speed on both AP and AT, then suddenly you loose IAS and both the AP and AT...
Forum: Tech Log
30th May 2011, 00:20
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

More Basic Observations

If you don't trust the PDF and all the magic, isn't this what the ISIS is for? Also, what were the engines doing at IDLE only 70 seconds or so after they commanded TOGA power? They must have really...
Forum: Tech Log
29th May 2011, 21:40
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

Basic Observations

Assume after the seat exchange, the PF noted the air temperature was higher than expected, thus stating his understanding they were thrust limited and therefore could not climb much higher in the...
Forum: Tech Log
29th May 2011, 01:14
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

Pitch Trim

One item that continues to puzzle me the most about this accident is what trimmed the Horizontal Stabilizer from +3 to +13 in one minute. Who did that, or what system did that? It was a lethal move.
Forum: Tech Log
28th May 2011, 23:35
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

High Altitude Operations

It might be useful for some to look at this:

http://www.faa.gov/other_visit/aviation_industry/airline_operators/training/media/Appendix%203-E_HighAltOperations.ppt

The notes for slide 29 are...
Forum: Tech Log
28th May 2011, 21:24
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

New stall recovery procedure

This is interesting, sorry if posted already:

Revised stall procedures centre on angle-of-attack not power...
Forum: Tech Log
16th May 2011, 22:15
Replies: 3,435
Views: 1,582,059
Posted By Flight Safety

Rubbish, not possible to know this soon. The 24...

Rubbish, not possible to know this soon. The 24 ACARS messages indicate that something pretty complicated happened, so there's no way to sort it all out this soon.
Forum: Tech Log
27th Apr 2011, 22:52
Replies: 2,546
Views: 880,383
Posted By Flight Safety

Upon examination of the Honeywell link that PJ2...

Upon examination of the Honeywell link that PJ2 provided, it appears the crash survivable memory unit (CSMU) and the DFDR chassis are designed to separate. The Underwater Locator Beacon (ULB) is...
26th Apr 2011, 23:44
Replies: 68
Views: 27,768
Posted By Flight Safety

What was he doing on 13C? Why wasn't he on 22L?

What was he doing on 13C? Why wasn't he on 22L?
5th Nov 2010, 21:48
Replies: 1,964
Views: 1,253,176
Posted By Flight Safety

ILS27LEFT, you cannot make that assumption at...

ILS27LEFT, you cannot make that assumption at this point, that the engine failure was related to being on the ground before the flight. Any number of things can cause a turbine burst including a...
5th Nov 2010, 17:53
Replies: 1,964
Views: 1,253,176
Posted By Flight Safety

A quote from this Flight Global article ...

A quote from this Flight Global article

Qantas may resume A380 operations within 48h (http://www.flightglobal.com/articles/2010/11/05/349370/qantas-may-resume-a380-operations-within-48h.html)
4th Nov 2010, 21:12
Replies: 1,964
Views: 1,253,176
Posted By Flight Safety

Appears to have been a fuel tank leak from the...

Appears to have been a fuel tank leak from the wing, based on photos and inside passenger video (taken from a seat behind the wing). So after the engine failure resulting in the loss of engine #2,...
Showing results 1 to 35 of 723
 


 
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