Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
1NM to meters |
1852m |
|
|
1NM to feet |
6080ft |
|
|
LSS formula |
38.94 x ✔️temp in degrees K |
|
|
Mach No formula |
TAS/LSS |
|
|
GNSS reference |
WGS84 |
|
|
Oceanic altimeter setting |
1013.25 Except when within island QNH zone or When below 3000’ within 10nm of shoreline of an island a Dept/are AD is on. |
|
|
Oceanic cruise levels |
180-359 Even FLs up to 400 then every 4000’ 000-179 Odd FLs up to 390 then every 4000’ “Even the best fly west” Entering, Leaving or Transiting the NZFIR may plan using W-E rather then NoSe method used in NZFIR |
|
|
ISA vs JSA |
ISA = 1.98degC/1000 to 36,090’ JSA = 2degC/1000 (no tropopause) |
|
|
MCT ECT |
MCT starts when centre of sun is 6deg below sensible horizon ECT ends when centre of sun is 6deg below sensible horizon |
|
|
Increasing latitude = increase or decrease in twilight? |
Increase |
|
|
LMT vs UTC |
Longitude east UTC least Longitude west UTC best |
|
|
Arc to time formula |
(Longitude x4)/60 |
|
|
RVR |
Below 1500m vis 0-400m reported in 25m steps 400-800m reported in 50m steps 800-1500m reported in 100m steps |
|
|
Mercator properties |
Cylindrical projection Poles not projected Rhumb lines straight GCs convex to nearest pole Not widely used in aviation MRS CONVEX POLE |
|
|
Lambert’s properties |
Conic projection Cuts earth at 2 points - upper and lower standard parallels Rhumb lines convex to equator GCs are straight Constant scale Widely used in aviation |
|
|
Auckland oceanic charts |
Lambert’s projection with standard parallels 0deg and 25degS |
|
|
Calculating distances when changing lat (same meridian) |
1deg = 60nm 1min = 1nm |
|
|
Calculating distances when changing long (same parallel) |
Departure formula = Change in long (mins) x cos lat |
|
|
Calculating earth’s convergency |
Change in long(degrees) x sin mean lat. |
|
|
Add or subtract earths convergency? |
Northern hemisphere W-E ADD E-W SUB Southern Hemisphere W-E SUB E-W ADD |
|
|
Convergency diagrams |
1) draw lines of long and plot points A and B 2) transfer the line of long 3) use formula change in long(degrees)x sin mean lat |
|
|
Conversion angle (when plotting radio waves on Mercator) |
Angular difference between rhumb line and GC track, between any two points. 1/2 x change in long (deg) x sin mean lat |
|
|
NDB bearing to VOR bearing from So.... |
Mercator Calculate variation and conversion angle and apply at A/C when working with NBDs Calculate variation and conversion angle and apply at station when working with VORs Lambert Variation from AC when working with NDBs Variation from station when working with VORs |
|
|
Radio bearing question answering |
1) draw a grid with station and ACs lat/longs 2) draw rhumb line and GC 3) calculate true bearing (grid line to GC line (AC NDB, Station VOR) 4) calculate conversion angle 1/2 x change in long (deg) x sin mean lat * if it asks from NDB/to VOR then remember to change to reciprocal |
