Parellel R/y

Question 1

2 modes of aprch to parallel r/ys

Answer 1

Independent

Dependant

Both based on radar separation

Question 2

Parallel r/y ops req

Answer 2

A/c must have ILS/MLS

Must be radar monitored, regardless of wx

Only straight in aprch

Track reversals prohibited

Question 3

Mode 1 - independent parallel aprch

Answer 3

Intercept angle = 30*

A/c need to be 2nm straight and level min prior to interception of the GS

Missed aprch tracks diverge by at least 30*

Question 4

Mode 2 dependant parallel aprch

Answer 4

Different from mode 1 by
3nm min separation on the same loc
2nm min separation on diff loc
Not less than 915m between the 2 r/y centrelines

Question 5

Mode 3 - simultaneous inst departures req

Answer 5

Not less than 760m from centreline of the r/y

Tracks must diverge by 15*

A/c must be identified by 1nm from ATC

Question 6

Mode 4 segregated dep and arrivals req - parallel r/y

Answer 6

Intercept the loc by 45* - max turn

Not less than 760m unless staggered by 150m and can reduce by 30m

Absolute min = 300m from the centreline of each r/y

Question 7

Diff between NOZ ant NTZ

Answer 7

NOZ (Normal operating zone) extends from the threshold out to the point where the a/c joins the extended centreline - mode 1 ops - 1/2 scale deflection will keep you within this

NTZ (normal transgression zone) extends from r/y threshold closest to the nearest descent point where 1,000ft vertical separation is lost - must be at least 610m - penetration by an a/c, req ATC intervention

Question 8

When must wake turbulence separation be applied to parallel r/y ops

Answer 8

If r/y spacing is less than 760m
Or
Flight paths of dep and arriving traffic cross at the same alt (within 1,000ft)