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Questions tagged [autoland]

System that fully or partially automates the landing operation of aircraft.

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5 answers
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If a pilot ejects, what is the autopilot programmed to do?

If a pilot uses their ejector seat during flight, what is the autopilot programmed to do? As a developer myself, I'd want to build in a way for the plane to try and save itself if possible (to save ...
Cloud's user avatar
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34 votes
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Has there ever been a fully automated takeoff, cruise, and landing of a large aircraft similar to commercial airliners?

Has there ever been a fully automated takeoff, cruise, and landing of a large aircraft similar to commercial airliners? In fact, has there ever been a fully automatic flight of any pure aircraft ...
DrZ214's user avatar
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Can airliners land with auto pilot in gusty wind conditions?

Why does the pilot make so many movements? I don't see that plane is moving all that much, but his yoke movements are strong and fast. For someone who is not a pilot, it almost looks like panicked ...
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13 votes
3 answers
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Was the Space Shuttle landing sequence executed manually or automatically?

I was motivated by another SE Aviation Question where the complex set of manouveres needed to land the space shuttle is described to ask the following question: Is the landing handled manually or is ...
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11 votes
2 answers
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What makes inertial guidance unsuitable for auto-land?

Above shows the performance of a Lockheed Martin civilian landing system developed in the mid-90s. It works by using the weather radar in SAR mode to update the INS, and the final 100 ft are flown by ...
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11 votes
1 answer
18k views

What is the difference between "Land 2" and "Land 3" annunciations for Boeing autopilot systems?

Another question's answers refer to certain Boeing jets having the capability to annunciate "Land 2" and "Land 3" when flying a coupled ILS approach. What does each of these modes require, and allow, ...
Ralph J's user avatar
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10 votes
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Can a non-pilot realistically land a commercial airliner? [duplicate]

It's a situation that often played out in the movies - the pilots are incapacitated, and the person in the cockpit is looking at all of those instruments and controls, wondering what to do with them. ...
Alexander's user avatar
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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 ...
Johnson's user avatar
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10 votes
1 answer
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Why did the pilot inform ATC that he is going to autoland?

I was listening to ATC and I heard the pilot say that they are going to autoland. What is the purpose of providing this info to ATC?
Babu Srinivasan's user avatar
10 votes
1 answer
552 views

Are there any autoland capable aircraft without autothrottles?

While reading the question Why couldn't the CRJ100/200 be equipped with triple-string autoland? I thought the CRJ cannot have autoland because it is not equipped with autothrottles. Somehow I ...
Bianfable's user avatar
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9 votes
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Are crosswind landings performed using autoland or under manual control?

I believe many people here have seen at least one of Cargospotter's videos of crosswind landings at Düsseldorf (DUS/EDDL). There are several of them. I picked this one: I think the pilots land their ...
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7 votes
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Why does the 737 auto-land trim up at around 400 feet RA?

From the 737NG FCOM: 400 Feet Radio Altitude The stabilizer is automatically trimmed an additional amount nose up. If the A/Ps subsequently disengage, forward control column force may be required to ...
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7 votes
1 answer
5k views

When do pilots perform a CAT II/III autoland?

If I understand correctly in good, visual weather get conditions airline pilots generally do ILS CAT I, when at some point they disconnect autopilot at some point and land manually. If the visibility ...
Konrad Dołowy's user avatar
7 votes
1 answer
893 views

How does auto landing work?

Some aircraft are equiped with auto landing to assist on zero visibility and ceiling land. Actually, how does this system work?
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5 votes
2 answers
1k views

Why would planes with two autopilots have just one active during cruise?

I know that the plane must have two autopilots for flying approaches, but why have individual buttons for each autopilot? Wouldn't it be easier to have both autopilots work at the same time for the ...
Boeing787's user avatar
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Are aircraft separately certified for CAT III ops for +2500 feet elevation?

Is it mandatory have separate certification for aircraft operating CAT III Operations on airports having elevation more than 2500 feet? If so do that aircraft are to carry any additional equipment? ...
Gireesan M's user avatar
5 votes
1 answer
549 views

How does Garmin Autoland for General Aviation aircraft work?

Garmin recently unveiled a new technology for their G3000 General Aviation avionics system, the Garmin Autoland. They claim it can safely and fully autonomously land the aircraft in case of pilot ...
Bianfable's user avatar
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4 votes
1 answer
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Are there examples of taildragger autoland systems?

I have only been able to find examples of auto-land systems for tricycle gear. Is there an equivalent for taildraggers? I realize taildraggers are more commonly used in VFR conditions, so there may ...
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3 votes
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Why does the pilot need to manually retard the thrust levers in an A320?

The Airbus A320 FCOM (Autoflight - Flight Guidance - Flare Mode) says: At 30 ft RA, the AP/FD aligns the yaw axis with the runway centerline and the aircraft flares on the pitch axis. If the ...
user67133's user avatar
2 votes
2 answers
1k views

Final 200 feet under autoland

How does Autoland work below decision height (200 ft)? Ie, what guides the plane until the radar altimeter notes the jet is at the right height to begin to flare? I've been searching the internet, and ...
jackj's user avatar
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1 answer
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Why couldn't the CRJ100/200 be equipped with triple-string autoland?

The gold standard for zero-visibility ILS approaches and landings is a triple-string autoland system, where the signals from the localiser and glideslope beams and the aircraft's radioaltimeter ...
Vikki's user avatar
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2 votes
3 answers
566 views

What do the regulatory bodies say about landing in CAT IIIB?

I typically read that CAT IIIB approaches must be flown by an autopilot to touchdown. Looking for a reference (regulatory bodies* in particular) to track the statement only leads to company SOPs. In ...
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1 vote
1 answer
1k views

Why can't pilots manually fly a low visibility approach instead of using auto land?

Pilots have instruments that help them land. But in low visibility they are required to use auto land. Why can't they rely on their instruments at those times?
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1 vote
3 answers
423 views

How much slipping and sliding go on during short final?

NOTE: This is not a question about coordinated flight in the pattern. There is no disagreement that hasty skids to turn the plane faster from base to final can and do kill. The question is about what ...
Kenn Sebesta's user avatar
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1 vote
2 answers
858 views

Autothrottle's control target during autoland

I read some pilots manual which indicates that the AT retard mode will be active at 30feet AGL to retract the throttle to idle, but the flare mode starts from 50 feet AGL? Should the throttle to be ...
VvV's user avatar
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1 vote
1 answer
128 views

How the aircraft sense the sink rate during autoland?

Radio altimeter is required for autoland, and the target of autoland flare mode is to reduce the sink rate to an acceptable sink rate at touch down, then how the sink rate is computed by the radio ...
VvV's user avatar
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0 votes
3 answers
249 views

how are UAV systems (aircraft+ground facilities) fitted with landing aid system?

For commercial aircraft, precise landing aid systems (ILS, GBAS) are required for autolanding, but these navigation systems are too expensive to be used for UAV operations. However, a lot of UAV OEMs ...
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