Crew Training Supplement Flashcards
Standard takeoff minimums for the A320
Standard takeoff minimums for 2 engine aircraft are 1sm or 5,000 RVR
Are we allowed to operate with lower than standard takeoff minimums?
What provides authorization to do so?
Yes
Ops spec C056: IFR takeoff minimums, part 121 airplane operations
What are we allowed to reduce our takeoff minimums to?
Ops spec C078: IFR lower than standard takeoff minima
Lowest authorized takeoff RVR:
TDZ RVR 500
MID RVR 500
ROLLOUT RVR 500
What are the runway requirements when operating at RVR 500/500/500?
HIRL + CL
Is reported visibility or RVR for the takeoff runway controlling?
RVR reports, when available for a particular runway, shall be used for all takeoff operations on that runway.
If reported RVR is 500/400/500, are we allowed to takeoff?
If reported RVR is 500/inop/500, are we allowed to takeoff?
No
Yes
If RVR is more than 1,600 RVR:
The TDZ RVR if available is _______
The MID RVR may be substituted for ________
Controlling
An unavailable TDZ report
If RVR is less than 1,600 RVR:
A minimum of ___________ are required
All reporting _________
2 operative RVR’s
RVR’s are controlling
When is a takeoff alternate required?
If the current departure airport weather is lower than the landing minimums published for the airport
What is required to list an airport as a takeoff alternate?
Must be within 1 hour from the departure airport at normal cruising speed in still air with one engine inoperative
Must meet the criteria in ops spec C055 for filling as an alternate.
What is the weather requirement at our destination airport to dispatch?
Weather must be at or above the authorized minimums at the ETA
The main body of the TAF for our destination airport is reporting visibility at the ETA of 1/2 sm, however there is a TEMPO for 1/4 sm. Can we depart?
Yes, exemption 20118 can be applied
Requires a second alternate
The main body of the TAF for our destination airport is reporting visibility at the ETA of 1/4 sm. Can we depart?
No, the main body of the report is controlling
When is a destination alternate required (domestic)?
An alternate must be designated unless the appropriate weather reports or forecasts, or any combination of them, indicates that the visibility will be at least (3) miles with a ceiling of at least 2,000 feet for at least one (1) hour before and one (1) hour after the ETA at the destination airport.
When is a second alternate required to be on the release?
When exemption 20118 is used
When weather at the destination and first alternate is marginal.
How is marginal weather defined?
A ceiling of less than 500 feet above DA(H) or MDA(H) or
A visibility of less than 1/2 mile above the lowest operational approach minimum
How do you determine that the alternate listed on the release is legal?
Reference ops spec C055: alternative airport IFR weather minimums
We use the 1 navaid/2 navaid rule to derive alternate weather minimums
1 navaid: for airports with at least 1 operational navigational facility providing a straight in NPA, or category 1 precision approach, or, when applicable, a circling maneuver from an IAP
•add 400 ft to MDA(H) or DA(H), as applicable
•add 1 sm to the landing minimum
2 navaid: for airports with at least 2 operational navigational facilities, each providing a straight in approach procedure to a different suitable runway
•add 200 ft to higher of the DA(H) or MDA(H) of the 2 approaches used
•add 1/2 sm to the higher authorized landing minimum of the 2 approaches used.
Would we use a different method to determine if the takeoff alternate or second alternate weather is legal?
No. An alternate is an alternate. We always reference C055.
Can we apply exemption 20118 to a destination or second alternate?
Yes
First alternate: the main body of the TAF must forecast a ceiling and visibility at the ETA equal to or greater than the C055 derived alternate weather minimum ceiling and visibility. A conditional statement must not forecast a ceiling or visibility, at the first alternate ETA, that is less than half of the derived alternate weather minimum ceiling or visibility
Second alternate: forecast must indicate in the main body and conditionals that the forecast ceiling and visibility, at the second alternate ETA, will be at or above the C055 derived alternate weather minimum ceiling and visibility
With 2 alternates listed on the release, what is the required minimum fuel (domestic)?
Fuel at the time of takeoff:
•fly to and land at the airport the flight was dispatched or released, and then
•fly to and land at the most distant alternate airport, and then
•fly for 45 minutes at normal cruising consumption
You are planning for an ILS with published minimums of 1/2 sm-1800 RVR. Prevailing visibility is 3/4 sm and TDZ RVR for that runway is 1600 RVR. Can you start the final approach segment? Can you continue if inside the FAF?
No, whenever the RVR is reported for a particular runway, it becomes the controlling visibility measurement for operations on the runway
Yes, if inside the FAF the weather is reported below minimums you can continue the approach.
Which RVR report(s) is controlling for approach and landing?
Reference C052
TDZ reports, when available for a particular runway, are controlling for all approaches and landings for that specific runway. The MID RVR and ROLLOUT RVR reports (if available) provide advisory information to the pilots
Note: the MID RVR report may be substituted for the TDZ RVR report in the event TDZ RVR report is not available
If you are flying an NPA what do you enter in the MCDU PERF approach page for minimums?
DDA: Derived Decision Altitude
How is DDA determined for an RNAV (GPS) approach?
DDA is derived by adding 50 ft to the appropriate LNAV MDA(H)