Other Helpful Information Flashcards
CAT I ILS minima:
DH: IF OCH < DH system minima, then DH required = 200ft (always the higher of the two)
DA: IF OCH < DH system minima, then DA = 200 – OCH + OCA = DA required
CAT I ILS minima:
DH: IF OCH < DH system minima, then DH required = 200ft (always the higher of the two)
DA: IF OCH < DH system minima, then DA = 200 – OCH + OCA = DA required
So just remember: IMC 1000ft and VMC 500ft
If you were wondering why the examiner has supplied us with a weather code, it is so that we can determine whether it is VMC or IMC.
FNLU 041200Z 10014KT 3000 HZ FEW075 SCT110 30/09 Q1028=
Min Visibility for VMC is 5000m. Visibility is 3000m, therefore conditions are IMC and our minimum stabilization height is 1000ft.
We need to calculate if we are in fact below the minimum stabilization height:
We can use the 1 in 60 rule for this:
Height = Glideslope Angle x Distance to go (in ft) / 60
Height = 3 x 2.5 x 6080/60 Height = 760ft
We can also approximate the answer by using the following rule of thumb for a 3° glideslope:
If the glideslope angle is 3°, the estimated height is 300 ft per nm from touchdown. (If the distance is measured from the threshold, add 50ft)
In this case, 300 x 2.5 = 750ft
This is below the Minimum Stabilization Height for IMC conditions. We also have a GPWS alert “SINK RATE”. Therefore we must initiate a go-around.
GPWS warns crew of:
- unsafe terrain clearance with flaps not in landing configuration
- unsafe terrain clearance with landing gear not down
- excessive descent rate
- windshear
- excessive terrain closing rate
- Altitude loss after take-off or go-around
- Downward glideslope deviation
According to ICAO, the Minimum Stabilization Heights are as follows:
a) in instrument meteorological conditions (IMC), all flights shall be stabilized by no lower than 300 m (1 000 ft) height above threshold
b) all flights of any nature (VMC included) shall be stabilized by no lower than 150 m (500 ft) height above threshold
So just remember: IMC 1000ft and VMC 500ft
If you were wondering why the examiner has supplied us with a weather code, it is so that we can determine whether it is VMC or IMC.
FNLU 041200Z 10014KT 3000 HZ FEW075 SCT110 30/09 Q1028=
Min Visibility for VMC is 5000m. Visibility is 3000m, therefore conditions are IMC and our minimum stabilization height is 1000ft.
We need to calculate if we are in fact below the minimum stabilization height:
We can use the 1 in 60 rule for this:
Height = Glideslope Angle x Distance to go (in ft) / 60
Height = 3 x 2.5 x 6080/60 Height = 760ft
We can also approximate the answer by using the following rule of thumb for a 3° glideslope:
If the glideslope angle is 3°, the estimated height is 300 ft per nm from touchdown. (If the distance is measured from the threshold, add 50ft)
In this case, 300 x 2.5 = 750ft
This is below the Minimum Stabilization Height for IMC conditions. We also have a GPWS alert “SINK RATE”. Therefore we must initiate a go-around.
GPWS warns crew of:
- unsafe terrain clearance with flaps not in landing configuration
- unsafe terrain clearance with landing gear not down
- excessive descent rate
- windshear
- excessive terrain closing rate
- Altitude loss after take-off or go-around
- Downward glideslope deviation
Stabilized Approaches:
An approach is considered stabilized only if all the following elements are achieved before or when reaching the applicable stabilization height:
- The aircraft is on the correct lateral and vertical flight path (based on navaids guidance or visual references)
- Only small changes in heading and pitch are required to maintain this flight path
- The aircraft is in the desired landing configuration
- The thrust is stabilized, usually above idle, to maintain the target approach speed along the desired final approach path
- The landing checklist has been accomplished as well as any required specific briefing
GBAS is a -
Precision Approach
According to ICAO, the Minimum Stabilization Heights are as follows:
a) in instrument meteorological conditions (IMC), all flights shall be stabilized by no lower than _____ft height above threshold
b) all flights of any nature (VMC included) shall be stabilized by no lower than ____ft height above threshold
Stabilized Approaches:
An approach is considered stabilized only if all the following elements are achieved before or when reaching the applicable stabilization height:
- The aircraft is on the correct lateral and vertical flight path (based on navaids guidance or visual references)
- Only small changes in heading and pitch are required to maintain this flight path
- The aircraft is in the desired landing configuration
- The thrust is stabilized, usually above idle, to maintain the target approach speed along the desired final approach path
- The landing checklist has been accomplished as well as any required specific briefing
According to ICAO, the Minimum Stabilization Heights are as follows:
a) in instrument meteorological conditions (IMC), all flights shall be stabilized by no lower than 300 m (1 000 ft) height above threshold
b) all flights of any nature (VMC included) shall be stabilized by no lower than 150 m (500 ft) height above threshold
Stabilized Approaches:
An approach is considered stabilized only if all the following elements are achieved before or when reaching the applicable stabilization height:
- The aircraft is on the correct lateral and vertical flight path (based on navaids guidance or visual references)
- Only small changes in heading and pitch are required to maintain this flight path
- The aircraft is in the desired landing configuration
- The thrust is stabilized, usually above idle, to maintain the target approach speed along the desired final approach path
- The landing checklist has been accomplished as well as any required specific briefing
