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How does MC compute delta T?
Current GS and conditions to the next waypoint. Adds VPF ETE thereafter (1-664)(-2)
What is the Speed Hierarchy?
- 1. Configuration Limit (never command >VMAX -10 or < VMMA)
- 2. SPEED LIMIT on a performance page (250/10000)
- 3. MAX SPD on the SPD CSTR AT WAYPOINT (Climb/Descent Only)
- 4. AT SPD (prior to waypoint) [FPLAN only]
- 5. F-PLAN Calculated Speeds to make time constraints [FPLAN only]
- 6. SPD (after waypoint) on Waypoints Page[FPLAN only]
- 7. Tech Order Speed
What is the Wind hierarchy? (-2, 1-648)
- Current Data* (Atmospheric Model) =>200 nm or 4000 feet
- Spot Winds (Define Review Waypoint Page)
- Climb/Descent Winds
- Wind Factors on RTE Data Page
*Current Data: MC uses ADC/IRS data for temp, temp dev, PA, hdg, drift, GS, and wind.
What is the Altitude hierarchy? (-2, 1-648)
- AT Altitude (At Before)
- AT/ABOVE, AT/BELOW
- CRZ FL (At After)
- CRZ Alt on RTE Data Page
Gaining / losing time to Low level / AR (3-3, 4.5.2)
- - Timing Triangles
- - Orbit points (<10K, 360=2.4 min / >10k, 1% TAS = # mins for 360)
- - 10% rule: Inc/dec IAS by 10% for 10 min to gain/lose 1 min
- - Incremental Method: IAS/6=x. Inc/dec IAS by x for 1 min to gain/lose 10 sec.
- - Proportional Method: Inc/dec IAS by # sec early/late. Hold for #secs = to original IAS.
- - Change TOT
- - 10 knot ROT: will lose/gain 1 sec/NM traveled for each 10 knots of GS faster/slower than planned GS
Difference between FPLAN/TECH/MAN?
FPLAN: Cruise phase only. Uses user-entered airspeeds or calculates speeds based on time constraints
TECH: Used when engine out performance is confirmed. Provides ETE/ETA, bur no time control. Used for Direct To/Intercept Legs and as default when FPLAN speeds are selected, but none are manually entered and no time constraints exist.
MAN: Manually entered. Provides ETE/ETA, but no time control.
When is 1+00 per 10000 technique accurate? (3-3, 220.127.116.11.3)
When there is no intervening hard waypoint