Questions tagged [autopilot]
An autopilot is a system used to guide an aircraft without assistance from a person.
168
questions
8
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3answers
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What does it mean when autoland is fail passive / fail operational?
The below explanation is what I've got from the internet about fail passive and fail operational:
Fail operational - Where you have 3 autopilots engaged, such that any single failure will result in ...
1
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0answers
52 views
Can I change the max bank angle on the Garmin G1000 in the C172SP?
I wonder if I can change the max bank angle on the G1000/GFC700 avionics in a C172SP, like you can on the MCP of the 737NG?
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votes
1answer
100 views
When will robots take over pilots? [closed]
So, I am considering a career being a pilot. However, the course is real expensive, and I do not want to invest so much money if in a couple of years robots will replace pilots.
So, anyone have any ...
4
votes
3answers
129 views
Does auto pilot take into consideration the altitude, speed, and the difference in heading change, to calculate the degree of bank?
Or is there a “standard” that the auto pilot follows at all times?
By “standard” I mean the aircraft will bank at x amount of degrees each time regardless of the following mentioned? The more you ...
13
votes
3answers
2k views
Is there any obvious warning when auto-pilot is disengaged or when the mode changes?
Under the investigation section of the First Air Flight 6560 incident, it describes the catalyst for the accident:
The approach was entirely flown on autopilot, which was correctly set to capture ...
0
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2answers
117 views
Does the AP disengage if the plane is upset and how would the flight controls react if not being held?
Does the AP (autopilot) essentially detect a rapid change in speed/altitude as a wild maneuver? If so, upon disengaging, if the pilots are not holding the control column in a neutral position, will it ...
3
votes
1answer
255 views
last 747 flight path, was this hand flown? How was this communicated with ATC? [duplicate]
Elal's last 747 flight made this nice path of a 747, how was this done?
Could this be entered into the computer and flown? or was this hand flown
The path looks quite neat
Also what is the ATC ...
1
vote
3answers
286 views
Can autopilot navigate automatically?
When the pilots enter their flight plan into the FMGS, the route will be shown on the ND. Can the autopilot automatically turn when needed with the given plan, or the pilots have to manually adjust ...
4
votes
2answers
250 views
What happens when auto-pilot fails over the ocean?
Let’s assume the current location puts the aircraft 2 hours from the nearest airport, but the destination is 2 1/2 hours away.
Would the pilots hand fly the rest of the way?
Are they allowed to fly ...
1
vote
2answers
174 views
On Airbus aircraft, can the pilot control the aircraft when the autopilot is active?
I am looking at the schematics of computerized control for Aibus aircraft and I do not understand the relation between the various control law and the autopilot.
Under "normal law" can the pilot ...
20
votes
2answers
3k views
Are there take-over requests from autopilots?
I am thinking of the driver take-over request in automated driving, when the system limits are reached and the back-up driver has to intervene / drive manually. Is there something similar in aviation, ...
7
votes
1answer
286 views
Are there any plans to make the QF-16 into a drone for actual combat missions, or a fully autonomous fighter?
It appears to a naive layman like myself that the QF-16 is an excellent platform to use for remote controlled missions akin to that of other drones. Except that the F-16 appears to have a broader ...
8
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2answers
259 views
Are there any aircraft with retractable vortex generators?
From this answer, “Of course, these also add drag, even when the wing is not stalling, so they are only added where needed”. Are there any aircraft that have vortex generators that are retractable so ...
20
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5answers
4k views
Why does the autopilot disengage even when it does not receive pilot input?
After having read the disturbing
https://en.wikipedia.org/wiki/1999_South_Dakota_Learjet_crash
I'm left with the question as to why the computer allows for the autopilot to be disengaged when there ...
1
vote
1answer
160 views
What is the vertical speed limit when altitude mode is engaged?
This question applies to Airbus' autopilot but may not be restricted to just this manufacturer (there must be equivalent modes on ATR, Embraer, Dassault Falcons, etc.)
For the vertical plan, the ...
0
votes
1answer
67 views
Changing the interception angle in autopilot for OBS or VOR in the G1000 from 30 to something more aggressive
I am flying the G1000 and have noticed that if I program in an OBS TO or a VOR TO (this might apply to FROM as well), the angle at which I fly relative to my programmed in bearing is 30 degrees.
For ...
2
votes
3answers
225 views
QF72: How could a disconnected autopilot change the pitch?
So I was reading about flight QF72, where the A330 had incorrect sensor data. The aircraft automatically pitched the nose down twice in response to abnormally high incorrect angle of attack data, but ...
-1
votes
2answers
205 views
Can an airliner be landed with only the auto pilot or remotely?
In this question: How autonomous are commercial passenger airliners? explains how automated the auto-pilot system can be. Could a pilot or more work the controls of the auto pilot that does not have ...
5
votes
2answers
296 views
Can the 737 Max autopilot be engaged when some sensors have failed?
If some instruments on the 737 MAX 8 fail on the Captain's side and autopilot stops, can the First Officer engage autopilot (as the instruments on his side are fine)? In the ET 302 crash the Captain ...
1
vote
0answers
65 views
Do aircraft use some kind of stability control to keep the aircraft on the runway during landing? [duplicate]
Modern automobiles use an electronic system called ESP to keep the car on track in slippery situations. Do modern jet liners have a similar system to aid the pilot in keeping the aircraft on the ...
30
votes
3answers
7k views
Why are on-board computers allowed to change controls without notifying the pilots?
Recently we've had the 737-MAX debacle, where it increasingly appears that the MAX on-board MCAS system repeatedly would issue nose-down events, leading to the Lion Air crash, and possibly another
...
6
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3answers
399 views
How is device control software checked for quality?
Many, many reports on the now infamous MCAS suggest a software patch is forthcoming in the next several weeks that will address the confounding single point of failure with the two AOA sensors that ...
1
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1answer
290 views
Why can’t takeoff rejection be automated?
According to this comment on my previous question about automatic instrument takeoffs (or, rather, the lack thereof), the reason takeoffs are always flown manually is to allow the pilot to quickly ...
7
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1answer
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Are the Boeing MCAS and Airbus Alpha Protection systems the same?
I have a little question concerning MCAS from Boeing and Alpha Protection from Airbus.
I think these two systems are the same, if I'm wrong please tell me.
If the two 737 MAX crashed because of the ...
2
votes
1answer
251 views
Could the autopilot have rectified the flight path without any crew input on the Aeroflot Flight 593?
In the case of the Aeroflot Flight 593 air crash, could the autopilot have rectified the flight path of the Airbus at any point if the crew had not attempted to correct the spin, even while partially ...
5
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0answers
141 views
Does an autopilot that controls roll, pitch and a yaw damper meet the requirements of 135.105(c)(1)?
For single-pilot VFR operations, 14 CFR 135.105(c)(1) requires that:
The autopilot is capable of operating the aircraft controls to
maintain flight and maneuver it about the three axes
Does this ...
6
votes
2answers
2k views
Why is autolanding ILS a thing, but not autotakeoffing ITS? [duplicate]
In this answer to the question of why zero-visibility landings are legal and routine but not zero-visibility takeoffs, the poster makes the following point:
When an aircraft lands in near zero ...
1
vote
3answers
604 views
Can you fly the plane manually without disengaging autopilot?
Let's say you are engaged a Boeing 777 with autopilot on and you bank or pitch. Will the plane respond?.
If so. will the plane try to return to its parameters once you quit handling the controls?.
...
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votes
1answer
59 views
Does MCP Altitude change in the B757/B767 when ALT HOLD is pushed?
I have a question, resulting of a discussion in a different forum: When flying the B757 or B767 and the ALT HOLD button is pushed, will that also change the MCP Altitude to the current altitude, at ...
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votes
1answer
111 views
How can I make a cheap and simple straight and level recovery device for an RC airplane?
I am a new RC pilot and I crash my RC aircraft a lot. I was thinking of a cool device which would be like training wheels for a plane: a device to return the plane to straight and level flight at the ...
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0answers
276 views
Are the terms “Coupled approach” and “Hand flown approach” strictly defined?
I was looking on SE and also Google for the answer, but couldn't find anything. My question is when to log an approach as coupled or handflown? All of the approaches I fly are CAT I but the aircraft's ...
0
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1answer
58 views
Process for Compensator in Altitude Hold
Trying to understand autopilots on a technical level. When making an altitude controller there is a compensator Gc that is used to acquire a Pitchcommand which is passed to an attitude controller (the ...
3
votes
2answers
1k views
Airbus A320 automatic speed mode protection in SRS vertical mode
According to the A320 FCOM, capter 22 auto flight, flight guidance, the "automatic speed mode protection" of the auto flight system of the A320 disengages the flight directors upon reaching current ...
14
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4answers
9k views
Can the autopilot (or stall avoidance system?) of the B737 MAX 8 be overridden by sheer force?
A New York Times article from today about the Lion Air Flight 610 crash claims that in order to control the airplane the pilot
could have braced his feet on the dashboard and yanked the yoke, or ...
30
votes
3answers
6k views
Why is 0 ft a valid target altitude for an autopilot?
Inspired by this story;
The pilot of a Flybe plane that dropped 500 ft (152m) in 18 seconds had
selected the wrong autopilot setting shortly after take-off, an
inquiry has found...
...The ...
0
votes
1answer
104 views
TCAS II manoeuvres? [duplicate]
What manoeuvres does the TCAS II advise the pilot to make?
Is it RA or TA ?
9
votes
2answers
940 views
Can autothrottle be used without autopilot (and vice versa)?
In commercial passenger aircraft:
Can autothrust be used with A/P disabled ?
And can A/P be used without using autothrust?
Citable references very welcome!
If the question depends on a specific ...
3
votes
1answer
893 views
Is it possible to totally override the flight computer on the Airbus A320-family (in simple non-technical terms)?
As I know, in the autopilot oriented airplanes like an A321 the plane doesn't let the pilots pitch down when the plane gets an over-speed warning.
So what if the pitot-static system isn't working ...
4
votes
2answers
386 views
What are the restrictions preventing more intelligent autopilot systems?
Current autopilot system is integrated with Flight Management System (FMS) for navigation such as LNAV and VNAV; both of them are based on preset parameters given by the pilot prior to departure (IRS ...
10
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2answers
1k views
Did these pilots break any regulations by hand-flying an A320 for most of the cruise?
A couple of days ago, I flew with a popular budget airline within Europe. The aircraft was an A320. It was also a brand new one (only in service since June 2018 and produces 15% less noise and fuel ...
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1answer
1k views
How much hand-flying does a commercial pilot do? [duplicate]
What is the ratio of hand-flying to autopilot for a typical commercial pilot working for a large airline (British Airways, Virgin, EasyJet etc.) and how many hours a year might a typical captain rack ...
6
votes
3answers
4k views
What is the ALT INTV on the 737's autopilot?
So, I was watching a quick tutorial on the FMC on YouTube. The FMC somehow had a 5000 ft restriction, and the guy got clearance to go higher up, and he set his altitude on the AP panel, and he pressed ...
3
votes
1answer
2k views
How do the VNAV and LNAV work on the 737NG?
So, I'm very confused. Im from a Cessna background, no FMC. So, based on my understanding, you could run the autopilot independent of the FMC right? With Speed mode, HDG SEL mode, and V/S mode, am I ...
5
votes
4answers
755 views
Is the 737's autopilot part of the FMS or is it a separate entity?
I was watching a tutorial about the FMS and the autopilot in the 737, and I am consfused. I come from a Cessna background, where there is no FMS, there is only the AP (autopilot).
So, is the AP a ...
0
votes
1answer
116 views
Is there a way to calculate the difference in pitch required to reach a certain vertical speed? [closed]
I am programming an autopilot for a 787 flight sim software and I've been having a problem.
I'm trying to simulate a PID that controls the pitch of the aircraft In relation to the vertical speed ...
1
vote
1answer
246 views
Can thrust be selected manually in a plane with autothrust? If yes, how?
I'm getting into the autothrust world and I have the question of whether it would be possible to disengage it and select the thrust manually in a plane that already has autothrust. How could it be ...
7
votes
2answers
484 views
Why is an auditory alarm necessary when the autopilot disengages?
The FAA gives one requirement for the autopilot in the following FAR...
FAR §25.1329 Flight guidance system.
(j) Following disengagement of the autopilot, a warning (visual
and auditory) ...
4
votes
3answers
2k views
Can you disengage A320 autopilot with stick pressure?
I was recently reading that in most military jets, auto-pilot can disengaged without hitting the button, by applying 5lbs of pressure to sticks.
Does this work in commercial airliners such as the ...
83
votes
5answers
42k views
If a pilot ejects, what is the autopilot programmed to do?
If a pilot uses his ejector seat during flight, what is the autopilot programmed to do?
As a developer myself, I would want to build in a way for the plane to try and save itself if possible (to save ...
2
votes
1answer
568 views
What does the XFR button on the Challenger 300's autopilot panel do?
I'm new to aircraft and currently I'm learning the autopilot system of the Bombardier Challenger 300. I saw the "xfr" button but don't understand what it is for. Can someone explain this to me?
