Standard Operating Procedures - PRO-NOR-SOP-15 Cruise Flashcards
106- When and How to Perform a Fuel Check?
PRO-NOR-SOP-15 P1
- A Fuel Check must be Performed:
When Overflying the Waypoint, or Every 30 Min
- Check that the Sum of FOB + F Used is Consistent with
the FOB at DEP.
* If the Sum is Unusually Greater than the FOB at DEP
Suspect a Frozen Fuel Quantity Indication.
Maintenance Action is due Before the Next Flight.
* If the Sum is Unusually Smaller than the FOB at DEP
or if it Decreases, Suspect a Fuel Leak.
107- In which unusual situation a Fuel Check is Necessary?
PRO-NOR-SOP-15 P1
In case of FUEL IMBALANCE.
108- For A321
B-HTG –> B-HTK
What to do if the Fuel Used Indication on the FUEL SD Page is Frozen at 9990 KG?
PRO-NOR-SOP-15 P2
Simply Refer to the 5 digit Fuel Used Indication on the
ENG SD Page to Obtain the Fuel Used Data.
109- When NAV Accuracy Check Must be Performed in Cruise?
PRO-NOR-SOP-15 P2
- On Aircraft with “GPS Primary” displayed
No Navigation Accuracy Check is Required
- It Must be Performed When:
* GPS PRIMARY LOST appears on the ND
* IRS Only Navigation
* The PROG Page Displays:
“NAV ACCUR LOW”
“NAV ACCUR DOWNGRAD”.
110- How to Perform a Navigation Accuracy Check in Cruise?
PRO-NOR-SOP-15 P2
- Hard Tune a VOR/DME in the MCDU RAD NAV Page
* Displayed Bottom Right of the ND
- Compare this Value with the Calculated MCDU Value
Hard tune in the PROG Page
* Displayed Top Right of the ND
111- What are the Errors Values of a NAV Accuracy Check?
PRO-NOR-SOP-15 P2
- If Error ≤ 3 NM the Check is Positive:
* FM position is Reliable, Use ND (ARC or NAV)
and Managed Lateral Guidance.
- If Error > 3 NM the check is Negative:
* FM position is Not Reliable, Use Raw Data for
Navigation and Monitor the MANAGED NAV Mode
- If there is a Significant Mismatch between the Display
and the Real position:
* Disengage MANAGED NAV Mode and use Raw
Data NAV Switching to ROSE VOR will Prevent FM
Data Misleading scenario.
