OM.A 8.4 All weather operations Flashcards
What is the minima for a cat 1 approach ? And required rvr
200ft Dh, rvr 550m/if reported 125m/if reported 75m
Multiple RVR are not required for CAT I and CAT I LTS
What is the minima for a cat 2 approach ? And required rvr
100ft, rvr 300m/125m/75m
If roll out guidance used mi point RVR required is 75m
What is the minima for a SA cat 2 approach ? And required rvr
100ft 350m/125m/75m
If roll out guidance used mi point RVR required is 75m
What is the minima for a cat 3 with DH approach ? And required rvr
50ft, rvr 175m/125m/75m
If roll out guidance used mi point RVR required is 75m
What is the minima for a cat 3 without DH approach ? And required rvr
No dh or 25ft, rvr 75/75m/75M
Lowest rvr a captain can take off in LVP
125m rvr
Required Visual References for CAT I approach ?
One of the following visual ref :
- Elements of the approach light system.
- The threshold.
- The threshold markings.
- The threshold lights.
- The threshold identification lights.
- The visual glideslope indicator.
- The touchdown zone or touchdown zone markings.
- The touchdown zone lights runway edge lights.
Required visual ref for CAT II or SA CAT II ?
The visual references must contain a segment of at least 3 consecutive lights being :
- The centre light of the approach lights, or
- Touchdown zone lights, or
- Runway centre line lights, or
- Runway edge lights, or
- A combination of these.
And a lateral element of the ground pattern:
* An approach lighting crossbar, or
* The landing threshold, or a barrette of the touchdown zone lighting.
Required visual ref for CAT III with DH ?
For Cat III with DH operations with fail-passive flight control systems, a pilot may not continue an approach below DH unless a visual reference containing at least 3 consecutive lights being:
- The centreline of the approach lights, or
- The touchdown zone lights, or
- The runway centre line lights, or
- The runway edge lights, or
- A combination of these is attained and can be maintained.
What is the minimum RVR for Takeoff ?
First officer 550M
Captain 125M
How many consecutive approaches can be flown ?
No more than 2 approaches when go-around due to weather conditions unless there has been a significant improvement to the weather which would allow a safe landing, or a state of emergency exists.
What is the approach Ban ?
An instrument approach may be commenced regardless of the reported RVR/VIS. If the reported RVR/VIS is less than the applicable minimum the approach shall not be continued:
- Below 1000ft above aerodrome
- or Into the final approach segment in the case where the DA/H or MDA/H is more than 1000 ft above the aerodrome.
In case of no reported RVR and reported VIS is less than the minimum but CMV is higher or equal to the minimum then approach can be continued to DA/H or MDA/H
thanks for the correction George
What is the controlling RVR ?
The controlling RVR is the TDZ for approach with MDA, DA or DH. If the TDZ RVR is not reported, then the midpoint RVR should be the controlling RVR.
When No RVR reported => CMV should be used for continuation of approach except in LVO.
On a CATIII without DH can you land if only one RVR is reported on the airport (can be on the opposite side of the Airport)
For CAT III without DH, Air Ops requires only one RVR value on the airport.
What is the relevant RVR on Take off and on landing ?
NOT APPLICABLE TO AUSTRIAN AOC ONLY UK
Take-off
RVR for that part of the runway used to accelerate to V1 followed by a rejected take-off and deceleration down to a speed of approximately 60 knots.
Landing
RVR for that part of the runway used during the high speed phase of the landing run down to a speed of approximately 60 knots.
