RNAV

Question 1

What is ARINC Specification 424?

Answer 1

The standard by which a navigation database is created to interface with an FMS or GPS receiver. Database provides path and termination points for the NAV computer to follow.

Question 2

If manually entering way points for procedures not in custom database what resolution must we input Lat/Long?

Answer 2

Thousandths of a minute for vertical guidance and minimums.

Question 3

What do we evaluate when flying RNAV procedures?

Answer 3

Safety, Flyability, Human Factors, Workload

Question 4

Should RNAV procedures be coupled when flown?

Answer 4

Yes, to evaluate lateral and vertical disconnects.

Question 5

What periodic flight inspection requirements are there for RNAV?

Answer 5

Obstacle verification.

Question 6

How do we evaluate RNAV ODP/SIDs?

Answer 6

Check CDI scaling (terminal). Fly from initial takeoff, low approach at 35/200ft depending on low-close in obstacles.

Question 7

If a navaid is used as a feeder route origin on a RNAV procedure, must we evaluate the navaid signal?

Answer 7

No, fly the track using the sensor indicated per type of approach.

Question 8

When must we confirm RADAR coverage on RNAV routes?

Answer 8

RNAV Routes supported by DME/DME require radar coverage to mitigate DME gaps. RNAV routes that are GNSS only do not require RADAR coverage, unless specified.

Question 9

On what RNAV approaches must we evaluate VDA?

Answer 9

LNAV/LP approaches without LNAV/VNAV or LPV minimums.

Question 10

How do we evaluate the missed approach segment on commissioning? Periodic?

Answer 10

Commissioning: Fly the segment as depicted. Periodic: Fly to a point where any potentially hazardous obstacles can be identified.

Question 11

What are course and distance tolerances for all RNAV procedures?

Answer 11

+/- 1 degree and .1 nm Procedure Design vs. FMS/AFIS calculated values.

Question 12

What is the VNAV tolerance?

Answer 12

.1 degree

Question 13

What distinguishes RNP from RNAV?

Answer 13

Monitoring and alerting

Question 14

How is procedural data compared?

Answer 14

Compare the approach segment procedural WP data to the flight plan WP data calculated by the FMS. Ensure course, distances, and glidepath angle accurately reflect procedural design.

Question 15

What is FAS data?

Answer 15

LPV Final Approach Segment Data that contains the parameters that define a single straight-in PRECISION approach. Found on the 8260-10

Question 16

When must the aircraft be on course and on path during an LPV inspection?

Answer 16

The AC shall be on course/onpath during the FAS segment.

Question 17

How soon must the data logger be started for FAS data block analysis? How soon prior to the FAF should we be on course?

Answer 17

1 nm prior to the PFAF (Pseudo), 2 nm prior to the FAF

Question 18

Where do we evaluate obstacles on RNP/RNAV approaches?

Answer 18

We evaluate rectangular areas extending the length of the approach segment and have a width value of 2 X RNP for that segment.