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25th Jun 2020, 15:18
Replies: 1,657
Views: 2,627,775
Posted By jimtx

That could have been a demonstration of good...

That could have been a demonstration of good airmanship since they were stable at 500 which I think is the criteria for most airlines and most of their aircraft in VMC. They would, of course, have...
11th Jun 2020, 14:40
Replies: 18
Views: 3,661
Posted By jimtx

Altitude and airspeed control seems ragged on two...

Altitude and airspeed control seems ragged on two flights available on FlightAware: https://flightaware.com/live/flight/N8991W
2nd Jun 2020, 15:40
Replies: 1,657
Views: 2,627,775
Posted By jimtx

Idle descent and configuring while descending...

Idle descent and configuring while descending (some aircraft might require a leveloff) in idle to a 500’ stable gate on a VMC visual approach should still be considered good airmanship.
Forum: Tech Log
13th Jan 2020, 00:21
Replies: 4
Views: 1,287
Posted By jimtx

Can't remember the exact details but in the 90's...

Can't remember the exact details but in the 90's while enroute over continental US in a Fokker 100, out of curiosity, we entered a direct to, I think, 0, 0 longitude and latitude. We didn't even get...
25th Dec 2019, 02:16
Replies: 288
Views: 323,640
Posted By jimtx

I believe a similar issue existed/exists with the...

I believe a similar issue existed/exists with the B727. But I think the only way to get there was a concocted situation in the simulator. But it is nice to know about. I never feared, wrenching or...
22nd Dec 2019, 03:35
Replies: 288
Views: 323,640
Posted By jimtx

I would agree that Sully should fly the plane...

I would agree that Sully should fly the plane without MCAS and report back. I'm sure the Boeing test pilots have been fitted with a chastity belt and you won't hear anything from them about their...
21st Dec 2019, 23:12
Replies: 288
Views: 323,640
Posted By jimtx

I think the slope of the stick force per G is...

I think the slope of the stick force per G is positive. It's just not linear in the regime they are concerned with.
21st Dec 2019, 04:08
Replies: 288
Views: 323,640
Posted By jimtx

trim, trim, trim, a mantra to for T-38 pilots a...

trim, trim, trim, a mantra to for T-38 pilots a long time ago. Still possibly a mantra in current T-38 training but maybe not necessary in current advanced military jets. But Boeing did not realize...
21st Dec 2019, 03:04
Replies: 288
Views: 323,640
Posted By jimtx

Why don't we just turn MCAS off and when the...

Why don't we just turn MCAS off and when the autopilot is off and the airplane is in the envelope put a force sensor that says "don't pull too hard"? Rhetorical question of course as I can't envision...
18th Dec 2019, 17:33
Replies: 288
Views: 323,640
Posted By jimtx

What pitch instability? It's just a nonlinear...

What pitch instability? It's just a nonlinear control response which might or might not affect the pilot. It apparently does not affect the autopilot although maybe MCAS is not needed for the...
16th Dec 2019, 22:05
Replies: 4,656
Views: 4,277,197
Posted By jimtx

While it's nice that Sully has a 737 type I...

While it's nice that Sully has a 737 type I suggested him because he has the gravitas to reassure the public. You could put almost any airline pilot in the seat in the MCAS envelope and have him...
16th Dec 2019, 03:49
Replies: 4,656
Views: 4,277,197
Posted By jimtx

Some previous threads above hint at the answer....

Some previous threads above hint at the answer. Unless we don’t know about some egregious handling issues the FAA and Boeing should about face and decide to turn MCAS off. If there is something more...
14th Dec 2019, 03:21
Replies: 4,656
Views: 4,277,197
Posted By jimtx

It is a question of dispute. Who do you allege...

It is a question of dispute. Who do you allege was trying to keep it a "secret"? What is a fact is that Boeing did not realize who they were selling airplanes to.
14th Dec 2019, 00:50
Replies: 4,656
Views: 4,277,197
Posted By jimtx

A secret to who? The Brazilian Certifying...

A secret to who? The Brazilian Certifying Authority knew about it and had it as a Cat B training item. Might be other countries also. It appears the FAA knew about it and bought off on not including...
14th Dec 2019, 00:45
Replies: 135
Views: 83,754
Posted By jimtx

I never saw anyone in uniform in the sim with...

I never saw anyone in uniform in the sim with either of my two airlines in the states. Usually everyone was in chinos and a nice shirt. But I always wore my uniform shoes. I wanted the feel of the...
13th Dec 2019, 02:53
Replies: 4,656
Views: 4,277,197
Posted By jimtx

So what should the pilots be afraid of once the...

So what should the pilots be afraid of once the electric trim is dissabled and MCAS is no longer there to protect them. Shouldn’t that be in your procedure? Hint: I’m one of the guys that think MCAS...
12th Dec 2019, 04:13
Replies: 4,656
Views: 4,277,197
Posted By jimtx

So the bird is not unstable. I would suppose that...

So the bird is not unstable. I would suppose that and have always thought that. Why is MCAS “desirable”? If the bird became light in pitch in a steep turn that wouldn’t bother me. What envelope would...
7th Dec 2019, 14:32
Replies: 59
Views: 70,975
Posted By jimtx

It appears that their company had a professional...

It appears that their company had a professional pilot under employ. Suppositions as to why he wasn't flying that trip would range from benign to nefarious.
7th Dec 2019, 00:44
Replies: 4,656
Views: 4,277,197
Posted By jimtx

What "intentional secrecy" are you referencing. I...

What "intentional secrecy" are you referencing. I think the use of MCAS was not hidden from anyone. Boeing (Chief Technical Pilot Forkner) appears to have put it in the Brazilian certifying...
27th Nov 2019, 14:36
Replies: 4,656
Views: 4,277,197
Posted By jimtx

He quotes Brady in his article but expresses...

He quotes Brady in his article but expresses uncertainty about whether he is correct. Yes you have to wonder how that pencil whip actually performed in the windup turns.
27th Nov 2019, 00:57
Replies: 4,656
Views: 4,277,197
Posted By jimtx

I almost quit reading after "stall prevention"...

I almost quit reading after "stall prevention" and managed to grit my teeth through "thrustline" but if he doesn't know that Brady is giving the correct reason for MCAS by now, absent any stunning...
25th Nov 2019, 05:01
Replies: 4,656
Views: 4,277,197
Posted By jimtx

While humans can be fooled most competent pilots...

While humans can be fooled most competent pilots have been trained to ignore expectations or bodily sensations and control the aircraft by visual determination of attitude and performance to get the...
24th Nov 2019, 04:53
Replies: 4,656
Views: 4,277,197
Posted By jimtx

Why is MCAS not needed if the autopilot is on....

Why is MCAS not needed if the autopilot is on. Does longitudinal stability not apply to the autopilot? Or does everyone know the MCAS protected regime is not on where the autopilot could be engaged?
24th Nov 2019, 04:41
Replies: 4,656
Views: 4,277,197
Posted By jimtx

That is what I was trying to say. A little...

That is what I was trying to say. A little lightening of stick force/gradient in some rarely visited regimes might not be a problem for most pilots especially if it was noted in their training. But...
23rd Nov 2019, 23:22
Replies: 4,656
Views: 4,277,197
Posted By jimtx

There is a lot I don't know about the aero of the...

There is a lot I don't know about the aero of the MAX but I don't think the original MCAS was put there for "unacceptable" stick force. It was put there for non linear stick force which would be...
Showing results 1 to 25 of 121
 


 
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