Low Viz Ops Flashcards
In low viz take off and landings, what is the colour coded centre line lighting to help you orientate yourself and what is the recommended maximum speed at the beginning of these transitions?
Red and white alternating centreline lighting starts at 900 m ‘landing distance remaining’. 90kts max
Continuous red lighting starts at 300 m ‘landing distance remaining’. 30kts max.
What happens if you get a generator failure above 200 radio?
Electrical system reverts to normal.
The ASA will revert to LAND 2 and one autopilot will disengage.
The aircraft is NOT capable of operating to LAND 2 capability until a second generator source is restored in accordance with the equipment list.
If a second generator source cannot be restored by 1000R, GO-AROUND.
What happens if you get a generator failure below 200 radio? ASA still reads land 3.
Electrical system does not revert to normal.
Both BTBs are prevented from closing.
The main AC bus on the failed generator side will be lost.
Autopilot on affected side will disengage.
Autothrottle will disconnect.
Instrument transfer bus will provide primary flight instruments on affected side.
ASA will show LAND 3.
When groundspeed is less than 40 kts and autopilot is disconnected LAND 2 will be displayed.
AC Bus on the affected side will be re-powered when the autopilot is disconnected or a go-around is initiated.
What should one do if you get a total autopilot failure during a CAT 2 or 3 approach? Maybe even a cat 1LTS?
Immediately go around! Significant out of trim forces can be present if the autopilot is disengaged below 100radio!
Looking at ground equipment failures. When is the ILS deviation available and what would you do above 200 radio and below 200 radio?
Pointers become available below 500 radio. Localiser or glidescope scales become Amber and the pointers flash. Above 200 monitor closely if Persistent go around. Below 200 radio go around immediately.
When do low viz ops begin / become relevant?
Below 400m requires reported RVR’s
What does fail operational mean?
Fail operational simply means that the aircraft is in a good position to continue the approach landing and rollout successfully if any single system has a failure below alert height.
What does fail passive mean?
Simply means that a failure will not significantly effect the airplane flight path or attitude.
You cannot continue to auto land though!
What would you do if you got a change in the status annunciation to no autoland below alert height?
Go around immediately.
With regard to minima on approaches, what is required as minima for the TDZ the MID Pt and the Stop End?
The TDZ is always controlling.
The Mid Pt and Stop end if reported and (relevant - RW section used down to 60kts)
What RVR values would you expect for MidPt and Stop End?
The minimum value for the MidPt is 125m or the TDZ if less.
The minimum value for the Stop End is 75m.
If an aircraft is fitted with rollout guidance then the minimum MidPt value is reduced to 75m
What are the visual requirements at DH for a CAT 1 or any non precision approach?
At least one of the following should be clearly visible.
Threshold, threshold markings, threshold lights, PAPI’s, runway edge lights, TDZ markings, TDZ lights.
CAT 2 ops require seeing 3 consecutive elements of lighting as well as a lateral element. Which other approaches also need this requirement?
LTS CAT1 and OTS CAT2.
What do you need to see at DH on A CAT 3 approach?
3 consecutive lights.
What do you need to see on a CAT3B approach with a DH?
Just 1 light.
