GPS 4

Question 1

(Refer to figure 219.) You are flying the RNAV (GPS)-A approach to RIVERSIDE (RIR) in a category A airplane. During the approach, the weather has deteriorated to 1,100 foot ceiling and 3/4 SM visibility. You decide to

Answer 1

Divert because visibility minimums are not met for landing.

Riverside Wx Deteriorated, you decided to: Divert bc visibility min

Question 2

(Refer to figure 218.) ATIS is inoperative and the Tower is closed. You are cleared to circle to land from the RNAV (GPS) RWY 5 approach at Des Moines International (DSM). What is the category B minimum altitude for circling?

Answer 2

1,460 MSL.

Des Moines Circling : 1460

Question 3

A pilot should suspect the accuracy of the received GPS navigation signal

Answer 3

If the GPS receiver fails a RAIM or FDE check in flight with erroneous navigation indication.

Suspect GPS Signal: If GPS receiver fails RAIM CHK

Question 4

To combat the spoofing or interference of GPS navigation signals and maintain situational awareness inflight,

Answer 4

Tune in to legacy ground-based navigational aids.

Spoofing o/GPS,:Tune to Legacy GND Based Navaids

Question 5

(Refer to figure 249.) You are flying the RNAV (GPS) RWY 30 LNAV/VNAV approach to LBF. What is the required visibility?

Answer 5

1/2 SM.

LBF VIS.: 1/2 SM

Question 6

During IFR operation using an approved GPS system for navigation,

Answer 6

the aircraft must have an approved and operational alternate navigation system appropriate for the route.

Approved GPS: AC MUST have ALT Navigation for route