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Forum: Tech Log
8th Dec 2019, 14:32
Replies: 17
Views: 2,885
Posted By Tomaski

When our airline first got the 737NG, HUD use was...

When our airline first got the 737NG, HUD use was optional unless it was specifically required for the conditions (mostly low vis app & landings). However, after a couple of tailstrike incidents, HUD...
Forum: Tech Log
24th Nov 2019, 03:40
Replies: 5
Views: 1,835
Posted By Tomaski

In general, a Flaps 15 approach would use an...

In general, a Flaps 15 approach would use an initial Flaps 1 call for the go-around. That said, the particular QRH and/or specific company procedures would provide the correct guidance.
12th Nov 2019, 18:01
Replies: 68
Views: 59,488
Posted By Tomaski

Rwy 4L is closed during construction of the new...

Rwy 4L is closed during construction of the new 9C, so the only non-east/west runway is 4R which is 8075 feet and only CAT I for approaches. Considering arrivals and departures and periodic snow...
12th Nov 2019, 10:53
Replies: 68
Views: 59,488
Posted By Tomaski

With the ongoing construction, ORD only has one...

With the ongoing construction, ORD only has one runway (4R/22L) that is not east/west and it is only a little over 8000 feet long.
Forum: Tech Log
12th Nov 2019, 10:49
Replies: 5
Views: 962
Posted By Tomaski

I stand corrected. Just curious, what is the...

I stand corrected. Just curious, what is the procedure if the HUD fails inside the FAF but before DH?
Forum: Tech Log
11th Nov 2019, 23:35
Replies: 5
Views: 962
Posted By Tomaski

In another thread, you asked about HUD Cat 3...

In another thread, you asked about HUD Cat 3 operations. The HUD is a fail-passive system and as such does not use an alert height, only a decision height. Some operators use a dual autopilot...
Forum: Tech Log
8th Nov 2019, 12:55
Replies: 4
Views: 827
Posted By Tomaski

After re-reading your question, I believe what...

After re-reading your question, I believe what your instructor was referring to is that the HUD is a "fail-passive" approach system, as opposed to "fail-operational", and thus limited to CAT IIIa...
Forum: Tech Log
7th Nov 2019, 20:30
Replies: 4
Views: 827
Posted By Tomaski

Back when we were still operating them, we were...

Back when we were still operating them, we were told the MAX's were limited to Cat II until they had accumulated enough history in operational use. I think it was an op spec issue and not necessarily...
5th Nov 2019, 03:46
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

While the data may not be public, I'm pretty sure...

While the data may not be public, I'm pretty sure the non-MCAS, high-AOA flight profiles have already been done (and likely redone since the accidents). It was those flight tests that identified the...
4th Nov 2019, 23:53
Replies: 35
Views: 13,581
Posted By Tomaski

An informative read on the abuses of data: The...

An informative read on the abuses of data: The Tyranny of Metrics by Jerry Muller
Forum: Tech Log
4th Nov 2019, 22:38
Replies: 12
Views: 1,610
Posted By Tomaski

Not really enough information to answer...

Not really enough information to answer specifically, and I definitely am not familiar with the E-190 or the QRH procedure, but here are some of my general thoughts.

First, did the QRH procedure...
2nd Nov 2019, 19:51
Replies: 35
Views: 13,581
Posted By Tomaski

I think "data driven" is one of those buzz words...

I think "data driven" is one of those buzz words that sound good but don't really get at the underlying philosophy. For example, one could take the position to assume something is fine until "the...
Forum: Tech Log
2nd Nov 2019, 03:30
Replies: 16
Views: 3,521
Posted By Tomaski

Keep in mind that for some of these procedures,...

Keep in mind that for some of these procedures, the racetrack is for descending to the FAF altitude as well as aligning with the final approach course. You could be perfectly aligned but still too...
Forum: Tech Log
1st Nov 2019, 18:13
Replies: 73
Views: 14,260
Posted By Tomaski

For now, I'm going stick with the thermodynamics...

For now, I'm going stick with the thermodynamics model, and to that point I would say that the minimum drag stable point of a low vs high bypass would show up in the speed of rotation.
Forum: Tech Log
1st Nov 2019, 16:02
Replies: 73
Views: 14,260
Posted By Tomaski

Great discussion. I was starting to question my...

Great discussion. I was starting to question my intuition with the back and forth. My initial response way back at the start was from simply observing that any system (in this case a turbine engine...
30th Oct 2019, 15:58
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

While not explicitly stated in any Boeing...

While not explicitly stated in any Boeing statements, the cynical side of me believes the engineering team thought this design was okay because when the stick shaker went off and the pilots went into...
30th Oct 2019, 13:10
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

Here's the link...

Here's the link (https://www.satcom.guru/2019/10/flawed-assumptions-pave-path-to-disaster.html).

Long read. Lot's of good, highly technical info and analysis. Better than what you would get in...
29th Oct 2019, 12:56
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

In the wake of the two MAX accidents, pilots...

In the wake of the two MAX accidents, pilots shouldn't have to ask to see either an Airspeed Unreliabe during takeoff or Runaway Stab Trim. Lack of familiarity and/or proficiency with these...
28th Oct 2019, 14:02
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

Agree, but the question I was answering is...

Agree, but the question I was answering is whether the AOA DISAGREE warning would have made any difference to the accident flight crew as they were trying to sort out the problem.
27th Oct 2019, 13:21
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

Regarding questions as to what the crew should...

Regarding questions as to what the crew should have done in response to the initial indications associated with the AOA malfunction......

FWIW, beginning on page 91 of the final accident report,...
26th Oct 2019, 20:14
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

How a flight crew would respond in the situation...

How a flight crew would respond in the situation will be a function of what they know about the underlying system and how they have been trained to execute this procedure. There are major...
26th Oct 2019, 12:53
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

The final accident report mentions that there...

The final accident report mentions that there have been 16 known cases of inadvertent stick shaker activations on the 737NG fleet. It does not detail the underlying cause of these activations. All...
26th Oct 2019, 12:14
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

Re MCAS overriding the crew - it was, in fact,...

Re MCAS overriding the crew - it was, in fact, the opposite. The Main Electric Trim (MET) overrode MCAS ever time it was used. As we saw when the Captain was the PF, aggressive MET inputs could...
26th Oct 2019, 04:03
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

I will again make the observation that, with the...

I will again make the observation that, with the exception of a single MCAS cycle (after which the crew extended the flaps) the ONLY malfunction that this crew was dealing with for the first five...
25th Oct 2019, 23:38
Replies: 4,656
Views: 4,290,660
Posted By Tomaski

This is is what the report says about the Lion...

This is is what the report says about the Lion Air QRH procedures:

"When a non–normal situation occurs, at the direction of the pilot flying, both crew members do all memory items in their areas...
Showing results 1 to 25 of 209
 


 
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