ATPL Instrument Flight Rules and Approaches

Question 1

Decision Altitude (DA) differs from Decision Height (DH) in that:

Accepted Answer

DA is referenced to mean sea level while DH is referenced to threshold elevation

Answer

DA is used for non-precision approaches only

Answer

DH is used for CAT I only, DA for CAT II/III

Answer

DA and DH are identical terms

Question 2

The ILS glide slope nominal descent angle is:

Accepted Answer

3.0°

Answer

2.0°

Answer

2.5°

Answer

3.5°

Question 3

Minimum Descent Altitude (MDA) is used on which type of approaches?

Accepted Answer

Non-precision approaches (VOR, NDB, LNAV)

Answer

Precision approaches (ILS, GLS)

Answer

CAT II/III approaches

Answer

Visual approaches

Question 4

What does 'LNAV/VNAV' on an RNAV approach chart indicate?

Accepted Answer

Lateral navigation with vertical guidance using barometric altitude — a precision-like approach

Answer

Localizer-only approach with barometric altitude

Answer

A fully augmented GPS approach equivalent to CAT III

Answer

An approach requiring ILS and RNAV simultaneously

Question 5

Required Navigation Performance (RNP) AR approach procedures require:

Accepted Answer

Advanced FMS with on-board monitoring and alerting capability meeting specific RNP values

Answer

Standard GPS receivers certified to TSO-C129

Answer

Dual VOR receivers with DME

Answer

ILS Cat II equipment and certification

Question 6

When established on the ILS localizer, what does a full-scale localizer deflection indicate?

Accepted Answer

The aircraft is approximately 2.5° from centerline

Answer

The aircraft is on the centerline

Answer

The aircraft is outside the protection area

Answer

The aircraft has intercepted the glide slope