Weather Radar Flashcards
You’re on arrival into DAL for the RNAV 13R approach. You are number 2 for the approach at 3000 feet. The airplane 5 miles in front of you goes around for windshear.
Q.8.1 Will your weather radar give you a PWS alert for that Windshear?
No: only below 1200 feet and 1.5 to 3 miles proximity to the windshear
AOM 15.5.1
You’re on arrival into DAL for the RNAV 13R approach. You are number 2 for the approach at 3000 feet. The airplane 5 miles in front of you goes around for windshear.
Q.8.2 What are your priorities? How long should you delay?
Windshear conditions often dissipate within 10 to 20 minutes
AOM 15.5.1
You’re departing south out of DAL to HOU on the CURLO6 with convective activity in the area.
Q.8.3 A cell is drifting across your departure path. At 70 kts you hear “MONITOR RADAR DISPLAY”. What would you do?
Continue the takeoff. Be prepared to execute the Windshear Escape Maneuver once airborne.
AOM 5.18.1
Q.8.4 Are there different detection parameters between PWS cautions and PWS warnings?
Cautions:
* 25 degrees lateral
* 3 NM distant
Warning:
* .5 NM lateral
* 3NM on ground
* 1.5 NM in the air
FRM B737-700/-800 15.2.7.2, FRM B737MAX 15.2.6.4
You are enroute to MCO with isolated storms building around MCO and as you turn on your weather radar, it fails.
Q.8.5 What are your options?
Your options include:
1. Call dispatch for real time weather avoidance information *
2. Request the latest thunderstorm information from ATC
3. Call the nearest FSS
4. Review the latest available weather reports, radar maps, and SIGMETs
5. Consult any other information sources regarding thunderstorm conditions
FOM 15.2.5
Q.8.6 What is the maximum distance that turbulence can be depicted on the ND for the RDR-4B and RDR-4000?
Regardless of range selected:
▪ RDR-4B: 40 NM
▪ RDR-4000: 60 NM Turbulence is displayed in magenta.
FRM GIP 5.2.5, 5.3.5, 6.3.4
Q.8.7 What is the significance of weather displayed with black stripes in the RDR-4000?
Black stripes designate “secondary” weather based on the current flight path.
FRM GIP 6.3.3
Q.8.8 You are cruising at FL 260 and your radar indicates a thunderstorm in your flight path. What is the recommended distance to avoid radar echoes at this altitude?
When flying above 23,000 ft avoid all echoes by 20 NM.
If possible, circumnavigate all echoes by flying on the upwind side.
FOM 15.2.4
Q.8.9 Radar shadows in the RDR-4000 are identified with magenta arcs via the REACT function. How would you identify a radar shadow with an RDR-4B?
They are identified by adjusting the antenna tilt down to a position showing ground return on the outer third of the indicator. Radar shadows are the black areas at the outer extremity of the displayed range.
FRM GIP 6.3.6, FOM 15.2.3
