if Flashcards
What is QDM and QDR?
QDM - bearing
QDR - radial
One dot on the deviation bar equals?
5 degrees
What is the 1 in 60 rule?
At 60nm, 1 degree = 1 nm
Purpose of a hold?
To position the aircraft at the appropriate start point for a procedural instrument approach, and to induce a delay if required for ATC management.
4 segments of a hold?
Inbound leg
Outbound end
Fix end
Outbound end
Leg timings above and below FL140?
Up to and including FL140 - 1 min
Above FL140 - 1.5 min
3 types of hold entry?
Sector 1 - parallel (110 degs on the holding side of the inbound cse)
Sector 2 - offset/teardrop (70 degs on the non-holding side of the inbound cse)
Sector 3 - direct ( remaining 180 deg)
Explain a sector 1 entry
On reaching the fix, start timing and turn to track parallel to the Inbound Course, but in a reciprocal direction.
Fly for 1 minute, or until reaching DME limit, and turn towards the holding side to intercept the inbound track to return to the fix.
Explain a sector 2 entry
On reaching the fix turn onto a heading (on the holding side) to make good a track 30 deg off the reciprocal of the inbound course.
Fly for 1 min, or until reaching DME limit.
Turn to intercept the inbound track to the fix.
Holding speed for the Prefect?
140 KIAS
Rate 1 turn?
19 deg AOB
3 deg per sec
What is the ‘gate’ in the hold?
The gate is a QDM or QDR that is 30 deg off the inbound track.
What is the ‘abeam’
Position 90 deg off the inbound track at the appropriate QDR or QDM
Drift corrections for inbound and outbound leg?
Inbound 1x drift
Outbound 3x drift (up to a maximum of 30 degs)
Timing corrections in hold?
Turn early/late
Time is adjusted by 1 second per knot of headwind or tailwind component.
Tail up -
Tail down -
Numbers up
Numbers down
Should you fly a continuous curved path on a DME arc?
No - as this will induce errors in the flight instruments
Radius of a rate one turn in miles = ?
Speed (nm per min) / 3.142