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Which indication may be recieved when a VOR is undergoing maintenance and is considered unreliable?
Coded identification T-E-S-T
What is the maximum permissible variation between the two bearing indicatiors on a dual VOR system when checking one VOR against the other?
4 degrees on the ground and in flight.
During a VOT check of the VOR equipment, the course deviation indicator centers on 356° with the TO/FROM reading FROM.  This VOR equipment may
be used during IFR flights, since the error is within limits.
If an airborne checkpoint is used to check the VOR system for IFR operations, the maximum bearing error permissible is
plus or minus 6°
Which entry shall be recorded by the person performing a VOR operational check?
Date, place, bearing error, and signature.
What record shall be made by the pilot performing a VOR operational check?
The date, place, bearing error, and signature in the aircraft log or other record.
Which checks and inspections of flight instruments or instrument systems must be accomplished before and aircraft can be flown under IFR?
VOR within 30 days and altimeter systems and transponder within 24 calendar months.
When is DME or suitable RNAV required for an instrument flight?
At or above 24,000 feet MSL if VOR navigational equipment is required.
What DME indications should a pilot observe when directly over a VORTAC site at 12,000 feet?
2 DME miles
Where does the DME indicator have the greatest error between the ground distance and displayed distance to the VORTAC?
High altitudes close to the VORTAC
While arcing left on the IAH 20 DME Arc, the pilot experiences a left crosswind component.  Where should the bearing pointer be referenced relative to the 90° (wingtip) position to maintain the 10 DME range?
Ahead of the left wingtip reference.
When an air carrier flight is operated under IFR or over-the-top on "victor airways," which navigation equipment is required to be installed in duplicate?
VOR
An air carrier operates a flight in VFR over-the-top conditions.  What radio navigation equipment is required to be a dual installation?
VOR
If an air carrier airplane is flying IFR using a single ADF navigation receiver and the ADF equipment fails, the flight must be able to
proceed safely to a suitable airport using VOR aids and complete an instrument approach by use of the remaining airplane radio system.
If the middle marker for a Category I ILS approach is inoperative,
the airplane must have sufficient fuel to proceed, by means of one other independent navigation system, to a suitable airport and complete an instrument approach by use of the remaining airplane radio system.
When must an air carrier airplane be DME/suitable RNAV system equipped?
Whenever VOR navigation equipment is required.
While on an IFR flight in controlled airspace, the failure of which unit will precipitate an immediate report to ATC?
DME
The moving map below reflects a loss of
position information.
Which publication includes information on operations in the North Atlantic (NAT) Minimum Navigation Performance Specifications Airspace?
FAR Part 91
How may an aircraft operate in North Atlantic (NAT) Minimum Navigation Performance Specifications Airspace with less than the minimum navigation capabilities required by FAR Part 91, Appendix C?
By requesting a deviation from the Administrator.
What type navigation system is Inertial Navigation System (INS)?  A navigation computer which provides position
by signals from self-contained gyros and accelerometers.
Routes that require a flight navigator are listed in the
Air Carrier's Operations Specifications.
Where is a list maintained for routes that require special navigation equipment?
Air Carrier's Operations Specifications.
A flight navigator or a specialized means of navigation is required aboard an air carrier airplane operatied outside the 48 contiguous United States and District of Columbia when
the airplane's position cannot be reliably fixed for a period of more than 1 hour.
An air carrier that elects to use an Inertial Navigation System (INS) must meet which equipment requirement prior to takeoff on a proposed flight?
Only one INS is required to be operative, if a Doppler Radar is substituted for the other INS.
Which equipment requirement must be met by an air carrier that elects to use a dual Inertial Navigation System (INS) on a proposed flight?
Only one INS is required to be operative, if a Doppler Radar is substituted for the other INS.
Within what frequency range does the localizer transmitter of the ILS operate?
108.10 to 111.95 MHz
What functions are provided by ILS?
Guidance, range, and visual information.
What aural and visual indications should be observed over an ILS inner marker?
Continuous dots at the rate of six per second.
What aural and visual indications should be observed over an ILS middle marker?
Alternate dots and dashes identified as a low-pitched tone.
What aural and visual indications should be observed over an ILS outer marker?
Continuous dashes at the rate of two per second.
If installed, what aural and visual indications should be  observed over the ILS back course marker?
A series of two dot combinations, and a white marker beacon light.
Which component associated with the ILS is identified by the last two letters of the localizer group?
Middle compass locator.
Which component associated with the ILS is identified by the first two letters of the localizer identification group?
Outer compass locator.
Which facility may be substitued for the middle marker during a Category I ILS approach?
Compass locator.
If the middle marker for a Category I ILS approach is inoperative,
the inoperative middle marker has no effect on straight-in minimums.
When is the course deviation indicator (CDI) considered to have a full-scale deflection?
When the CDI deflects from the center of the scale to full-scale left or right.
Which "rule of thumb" may be used to approximate the rate of descent required for a 3° glidepath?
5 times groundspeed in knots
The rate of descent for a 3.5° angle of descent glideslope is
740 ft/min at 120 knots groundspeed.
Which displacement from the localizer and glideslope at the 1.9 NM point is indicated?
710 feet to the right of the localzer centerline and 140 feet above the glideslope.
What does the tri-color VASI consist of?
One light projector with three colors; red, green, and amber.
Which color on a tri-color VASI is a "high" indication?
Amber
Which color on a tri-color VASI is an "on course" indication
Green
Which color on a tri-color VASI is a "low" indication?
Red
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