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22nd Mar 2019, 22:24
Replies: 2,500
Views: 6,221,768
Posted By fdr

On the surface that is an interesting...

On the surface that is an interesting observation, however it is the result of working with unequal population sizes and looking at temporal processes. Safety of a system is judged by exceptional...
21st Mar 2019, 09:04
Replies: 2,500
Views: 6,221,768
Posted By fdr

Surely you jest sir! This is the best industry...

Surely you jest sir! This is the best industry that money can buy. There is 40 years of rapacious investor appetite being counterbalanced by technical improvements in the operation and systems, and...
18th Mar 2019, 00:48
Replies: 2,500
Views: 6,221,768
Posted By fdr

not being pedantic, just that A320s incorporate...

not being pedantic, just that A320s incorporate a conventional cane AOA sensor, not a static pressure comparator type system, the vane has no way to be blocked, it can jam...
17th Mar 2019, 10:41
Replies: 2,500
Views: 6,221,768
Posted By fdr

So, there was Qantas with an A380, where the...

So, there was Qantas with an A380, where the assumed failure modes of certification didn't bear much resemblance with the real world. There was also Qantas' A330 FBW going nuts, and the B744 where...
17th Mar 2019, 07:58
Replies: 2,500
Views: 6,221,768
Posted By fdr

[QUOTE=CONSO;10421152]FUBAR ^3 for starters. BA...

[QUOTE=CONSO;10421152]FUBAR ^3 for starters. BA will no doubt blame the janitor or low level manager./QUOTE]

Still have to work on reinforcing the flight crew response. The cues appear to have...
16th Mar 2019, 05:04
Replies: 46
Views: 23,236
Posted By fdr

getting each pilot into a simulator and making...

getting each pilot into a simulator and making sure they can recognise a trim fault, can hear the stall warning over their ipods, and can find the cutout switches and stop themselves from vertical...
16th Mar 2019, 04:31
Replies: 361
Views: 360,513
Posted By fdr

Its opinion, but the difference in control...

Its opinion, but the difference in control method is why the Bus is nicer to fly than the 777/787 as far as pitch/roll goes... in flight, and in normal modes. The instrumentation sucks, the...
16th Mar 2019, 04:11
Replies: 2,500
Views: 6,221,768
Posted By fdr

1. The values before establishing in forward...

1. The values before establishing in forward flight is dependent on wind direction, the probe can be in random positions.

AOA probes stick, or go open or closed circuit, and give fixed, high or...
16th Mar 2019, 02:54
Replies: 733
Views: 1,451,054
Posted By fdr

The 767 is a conventional geometry aircraft: The...

The 767 is a conventional geometry aircraft: The stab provides a negative lift force to balance the nose down pitching moment of the wing. If the actuator becomes fully free of constraint, the...
16th Mar 2019, 01:49
Replies: 46
Views: 23,236
Posted By fdr

per conso's req: 25.672 Stability...

per conso's req:


25.672 Stability augmentation and automatic and power-operated systems

If the functioning of stability augmentation or other automatic or power-operated systems is...
16th Mar 2019, 01:47
Replies: 2,500
Views: 6,221,768
Posted By fdr

VB; the point on JT610 is still being missed. I...

VB; the point on JT610 is still being missed. I reiterate...

For JT610, the data shows the following: AOA IS NOT FAULTY. IT IS INSTALLED INCORRECTLY. There is a constant offset between L & R,...
16th Mar 2019, 00:14
Replies: 361
Views: 360,513
Posted By fdr

The issue isn't that stall itself ( 25.203 Stall...

The issue isn't that stall itself ( 25.203 Stall characteristics) , if it was, then a pusher would have been mandated. The problem is a longitudinal stability criteria compliance ( 25.143 General,...
15th Mar 2019, 23:35
Replies: 2,500
Views: 6,221,768
Posted By fdr

25.672 Stability augmentation and automatic and...

25.672 Stability augmentation and automatic and power-operated systems

If the functioning of stability augmentation or other automatic or power-operated systems is necessary to show compliance...
15th Mar 2019, 23:27
Replies: 2,500
Views: 6,221,768
Posted By fdr

FC; those seem to be reasonable compliance...

FC; those seem to be reasonable compliance requirements for the PSCP for a 25.672 system, the FAA SEA TAD will likely be looking at some criteria along those lines. Note that JT610's data provided in...
15th Mar 2019, 22:50
Replies: 2,500
Views: 6,221,768
Posted By fdr

On almost all air data systems and on all direct...

On almost all air data systems and on all direct reading static systems, there is a difference in the static measurement with attitude, so the aircraft at approximately zero pitch attitude has a...
15th Mar 2019, 10:03
Replies: 361
Views: 360,513
Posted By fdr

89-0127? Wouldn't have guessed that was possible...

89-0127? Wouldn't have guessed that was possible for the pile of CFRP that sat in the weeds. Theres hope then for the F-22's at Tyndall...?
...
15th Mar 2019, 07:19
Replies: 98
Views: 105,562
Posted By fdr

It appears that the Max8 still has the STS system...

It appears that the Max8 still has the STS system incorporated, which is the short period automatic trim at the latter stage of flap retraction. The report states the previous flight was undertaken...
15th Mar 2019, 04:54
Replies: 98
Views: 105,562
Posted By fdr

JT610 DFDR Wow. Expected to see...

JT610 DFDR

Wow.

Expected to see activity, but the poor driver is getting RSI on the trim system there. The last minute is just desperately sad to see, however it sure looks like the pilot was...
15th Mar 2019, 04:45
Replies: 361
Views: 360,513
Posted By fdr

The flow over the nose area is dependent on alpha...

The flow over the nose area is dependent on alpha and beta angles. A disagreement trigger value between AOA vanes can be set from test information and estimated fairly accurately by RANS or...
14th Mar 2019, 21:40
Replies: 361
Views: 360,513
Posted By fdr

CB737; the debris field in Addis indicates...

CB737;

the debris field in Addis indicates that on the day, prior knowledge didn't alter the outcome effectively. The individual may be easily blamed post hoc, that is the way of the world,...
14th Mar 2019, 19:11
Replies: 361
Views: 360,513
Posted By fdr

the point is that while what you say is correct,...

the point is that while what you say is correct, the loss of Lion's Max show that the real world is more complex than a simple switch flick, on the day it didn't happen. The crew there were missing...
14th Mar 2019, 12:11
Replies: 98
Views: 105,562
Posted By fdr

LSAS is a stab augmentation system that made up...

LSAS is a stab augmentation system that made up for a relaxed stability arising from a reduced relative tail volume.MegaDeath2 pitch stability is enhanced in both directions.... The Max system is...
13th Mar 2019, 23:01
Replies: 361
Views: 360,513
Posted By fdr

In respect of the MCAS/certification requirement....

In respect of the MCAS/certification requirement.

Gums, the 101 had a particular issue related to the T tail configuration, which gave endless entertainment and some great movies. The Max's issue...
11th Mar 2019, 10:21
Replies: 109
Views: 96,163
Posted By fdr

CAAC is within it's rights to raise concerns on...

CAAC is within it's rights to raise concerns on the compliance of a product to the certification standard. The B737's grandfather status is not something that the OEM should be proud o, and the fact...
11th Mar 2019, 01:52
Replies: 2,500
Views: 6,221,768
Posted By fdr

True. The MMEL does not provide any relief for a...

True. The MMEL does not provide any relief for a MCAS system. The MMEL does however provide relief for the MLA system, which is curiously a factor itself in reduced longitudinal stability. Accepting...
Showing results 1 to 25 of 456
 


 
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