General Flashcards
Minimum Crew (A319/A320/A321)
A319
Minimum Crew: 3
Reduced Crew: 2
Pax Limit: 95
A320
Minimum Crew: 4
Reduced Crew: 3
Pax Limit: 130
A321:
Minimum Crew: 4 or 5 (A321 with a 154 configuration has a minimum cabin crew requirement of 4. A321 with a 218 or 220 configuration has a minimum cabin crew requirement of 5)
Reduced Crew: 4 (all configurations)
Pax Limit 200 (only applicable to 218/220 configuration)
What is the stable approach criteria?
On all approaches the aircraft must be flown to be stable by the 1000 ft auto-callout
- In the planned landing configuration (gear down land flap achieved).
- Stabilised on the correct vertical and lateral profile
- Stabilised at the target approach speed
In all cases, the landing checklist must be completed by the 500 ft auto-callout.
What are the four main elements of the safe landing policy?
*Inflight landing performance assessment
*Stable approach criteria
*Safe touchdown criteria
*Safe rollout criteria
What is the safe touchdown criteria?
A touchdown is considered safe when all of the following criteria are met:
*Main Gear Touchdown within the Touchdown Zone.
*Main Gear Touchdown and trajectory within runway edge is guaranteed.
*Normal Runway contact within the aircraft geometric landing limits.
What is the safe rollout criteria?
On all rollouts the aircraft must be decelerated in such a manner to assure a safe stop prior to the runway end and to routinely achieve taxi speed by at least 300 m from the runway end.
*Timely use of all deceleration devices that were included in the Inflight Landing Performance Assessment.
*Maintaining deceleration until stop is assured and an appropriate runway exit speed is reached.
To autoland or not?
The BA policy is explicitly that any approach in minima lower than Cat I must be followed by an autoland and auto-rollout if possible. It should be noted BA does not have authorisation to conduct manual landings from LTS Cat I or Cat II approaches.
With the removal of runway status information from the Performance Manuals, crew may only attempt to autoland on a runway for which LVO minima are published (i.e LTS Cat I or below), even in Cat I conditions.
Is the stop-end RVR relevant?
‘Relevant’ in this context means that part of the runway used during the high-speed phase of the landing down to a speed of approximately 60 kt.
If the crew deems the stop-end to be relevant, it is controlling and the required RVR is always 75 m.
What constitutes operations in LVOs?
Take-off RVR of less than 400m and landing in RVR of less than 550m.
Visual reference for CAT II and CAT III A?
Not less than a 3 light segment of the centerline of the approach lights or runway centerline or touchdown zone lights or runway edge lights is obtained.
Visual reference for CAT IIIB (with DH)?
At least one centerline light
Visual reference for CAT IIIB with NO DH?
None
What is the approach ban?
The decision-making at 1000 ft above aerodrome level, whether or not to continue the approach, is referred to as the Approach Ban concept. It applies for every instrument, visual or circling approach, not just those made in Low Visibility.
What is the alert height?
The height above which an autoland should be discontinued and a missed approach initiated if a failure occurs in either the aircraft automatic landing system or the relevant ground equipment.
The autoland can be continued with a failure below alert height. It is 100 ft for the A320.
Are CAT 2 and CAT 3 SINGLE fail passive?
Yes
Is CAT 3 DUAL fail operational?
Yes
