Engine response time

[Guest]

43 minutes ago, skelsey said:

A good summary as usual.

I don't know that much about the airline in question's procedures, but I would imagine that the gates above are most likely guidelines  - in other words, if you're missing them, alarm bells should start ringing -- and the actual 'hard' gate at which the criteria must be met else the SESMA goes off etc will be a little further down (ie 1000/500 aal).

 

Said Operators Stabilised Approach criteria (Landing gate of 1000ft IMC/ 500ft VMC) is to ensure we cross the runway threshold at a safe altitude and at a appropriate speed and thrust setting so we can touchdown as close to the aiming point as possible.

To continue past the landing gate we must meet the following criteria otherwise a Go-Around is mandatory unless a report is filed detailing the circumstances behind the decision to continue the approach.

1. VREF to VREF + 15 (VREF + 20 MAX)

2. +/- One Dot Glide or x3 Reds/ x3 Whites on PAPI (x4 Red or White = Go Around)

3. +/- One Dot Loc

4. Thrust Appropriate to conditions

5. Landing Checklist Complete (with exception of landing lights)

All Approaches for said operator, if flown accurately, can safely achieve the landing gate criteria by configuring Gear Down Flap 15 at  4nm in VMC and 5nm in IMC and is the latest point at which you can configure. On all approaches the point at which the landing configuration commences may be modified (eg tailwind, ATC Speed Restrictions, HEA) 

There are other criteria dependent on the type of approach flown, for example for an ILS we must have G/S capture by 5nm. 

 

10 hours ago, ALF1 said:

Because when it comes to flying a fleet of airplanes airlines need to be consistent. The less you leave to subjectivity the better and safer everyone will be. SOPs are an absolute necessity.

 

100% correct and to reinforce the point the Captain will always have the final authority for all actions performed and for the operation and safety of the aircraft.

Again, as I always state, other operators may vary!

Happy Landings!