Radio Navigation — Sample Paper 2

FMC navigation database update cycle:

DME squitter purpose:

If the VOR auto-monitor detects bearing error >±1°:

Above 84° latitude, a twin FMS/triple IRS system goes to de-coupled operations because:

Flying directly over a VOR station, the indications are:

MLS UK usable range:

Time from DME interrogation to receipt of reply = 1290 µs. Slant range:

The wavelength corresponding to a frequency of 15,625 MHz is:

VDF — which emergency frequency most commonly used for position fix?

On a standard CDI, angular value of one dot deflection:

GPS Week Number rollover issue — period:

SSR operates on frequencies:

What is the frequency band used by VOR?

When the induced signals from the loop and the sense antenna are combined in an ADF receiver, the resultant polar diagram is:

SBAS integrity monitoring provided by:

ILS number of channels (40-channel system):

PRF 500 pps. Max range:

Which PRN codes does GPS L1 carry?

A primary radar has a PRF of 275 pps. Time interval between leading edges of successive pulses:

An aircraft at altitude 9000 ft wishes to communicate with a VHF/DF station situated at 400 ft AMSL. What is the maximum range at which contact is likely to be made?

AWR is an example of ___ radar at frequency ___ in the ___ band:

ILS glidepath signal: DDM = 0.175 at:

AWR MAN mode beam:

When a DME co-located with VOR is selected, the DME channel is:

An aircraft has to communicate with a VHF station at a range of 300 NM. If the ground station is situated 2500 ft AMSL, which of the following is the lowest altitude at which contact is likely to be made?

GPS geoid reference:

VORTAC: military aircraft uses:

Range arcs on the EHSI are displayed in:

An aircraft at 19,000 ft wishes to communicate with a VDF station at 1400 ft AMSL. What is the maximum range at which contact is likely?

GPS orbital period:

EHS (Enhanced Surveillance) adds:

NDB frequency band:

In order to resolve the 180° directional ambiguity of a directional LOOP aerial its polar diagram is combined with that of a SENSE aerial _____ to produce a _____ whose single null ensures the ADF needle moves the shortest distance to indicate the correct _____:

A VOR station antenna is at 100 ft; aircraft at 3,600 ft. Using coefficient 1.25, maximum LOS range is:

Number of VOR channels in the 108–112 MHz band:

AWR scalloped edges on return indicate:

VOR cone of confusion unreliable signals begin at approximately:

P-RNAV required accuracy:

DME acquisition phase rate:

The position used by the FMC in the B737-400 is:

Concerning HF communications, which of the following is correct?

RNAV erratic: aircraft beyond LOS of reference VOR/DME:

An all-in-view receiver:

Which RMI statement is correct?

Super-refraction effect on radar:

RNAV erratic most likely cause:

DME search phase pulse rate:

AWR WEA colour for no precip:

MTI removes:

Selective Availability (SA):