L7 Communications Failure

Flashcards about communication failure in aviation, covering procedures after failure, troubleshooting steps, and alternative contact methods.

What characteristics of the aircraft are not affected by communications failure?

The lack of voice communications does not alter them.

What might change with a loss of voice communications?

Choice of airfields and airspace, and integration with existing traffic.

What should be the first action in the event of an unexpected loss of voice communications?

Troubleshooting to see if communications can be restored.

What is the first radio check to perform when troubleshooting loss of communication?

Is the correct frequency selected?

What is a basic radio control check to perform when troubleshooting loss of communication?

Is the volume set correctly?

What is an important check regarding the headset when troubleshooting loss of communication?

Is the headset operating properly?

What panel switch should be checked when troubleshooting loss of communication?

Has the Avionics Master Switch been turned off accidentally?

What are the pilot's priorities when troubleshooting a communications problem?

Aviate, Navigate, Communicate.

Besides the aircraft radio, what other radio could a pilot use to establish contact?

A hand-held radio.

What is a limitation of using a hand-held radio compared to the aircraft's radio?

Less power and less range.

In what situation could a pilot use a mobile phone during flight?

A mobile phone.

Following a communications failure, what weather conditions should the pilot try to maintain?

Remaining in VMC if at all possible.

Following a communication failure, when should you plan too land?

Plan to land before sunset.

Following a communications failure, what squawk code should be used if the transponder is operating?

7600

When should the radio failure squawk be used?

If the transponder is operating.

After a communication failure, what question you should ask yourself about fuel?

What is the fuel/range/endurance remaining?

After a communications failure, and if possible, what kind of airfield should be selected for landing?

An airfield outside controlled airspace.

What information should be included in radio calls made 'transmitting blind'?

Stating your situation, position and intentions.

What phrase should prefix each radio call when you believe your radio is transmitting but not receiving?

"Transmitting blind".

According to ICAO, what is a Blind Transmission?

A transmission from one station to another where two-way communication cannot be established.

What action is involved in the Speechless Code?

Pressing the 'Press To Talk' (PTT) button to make a short transmission.

In the Speechless Code, what does one short 'dash' mean?

Yes

In the Speechless Code, what do two short 'dashes' mean?

No

In the Speechless Code, what do three short 'dashes' mean?

Say Again

In the Speechless Code, what do four short 'dashes' mean?

Request Homing or Request Assistance

What is the recommendation about responding to a transmission by clicking the PTT button twice?

It is non-standard and should be avoided.

If you expect to receive light signals at an airfield following communications failure, where should you position the aircraft?

Position on the 'dead side' of the circuit, close to the tower at circuit altitude/height.

What does a steady green light signal mean to an aircraft in flight?

Cleared to land

What does a steady red light signal mean to an aircraft in flight?

Give way to other aircraft and continue circling

What does a series of green flashes mean to an aircraft in flight?

Return for landing

What does a series of red flashes mean to an aircraft in flight?

Aerodrome unsafe, do not land

What does a series of white flashes mean to an aircraft in flight?

Land at this aerodrome and proceed to apron

What does a steady green light signal mean to an aircraft on the ground?

Cleared for take-off

What does a steady red light signal mean to an aircraft on the ground?

Stop

What does a series of green flashes mean to an aircraft on the ground?

Cleared to taxi

What does a series of red flashes mean to an aircraft on the ground?

Taxi clear of landing area in use

What does a series of white flashes mean to an aircraft on the ground?

Return to starting point on the aerodrome

What non-radio signal acknowledges a light signal during daylight?

Rock aircraft's wings

What non-radio signal acknowledges a light signal during nighttime?

Flash on and off aircraft's landing lights twice

What non-radio signal can be used to acknowledge a light signal when an aircraft is on the ground during daylight?

Moving the aircraft's ailerons or rudder

What non-radio signal can be used to acknowledge a light signal when an aircraft is on the ground during nighttime?

Flash on and off the aircraft's landing lights twice

When experiencing difficulty with radio, what does How do you read mean?

What is the readability of my transmission?

When experiencing difficulty with radio, what does I say again mean?

I repeat for emphasis or clarity

When experiencing difficulty with radio, what does Say again mean?

Repeat all, or a specific part of your last transmission

When experiencing difficulty with radio, what does Speak slower mean?

Reduce your rate of speech

When experiencing difficulty with radio, what does Words twice mean as a request?

Transmit every word, or group of words, twice

When experiencing difficulty with radio, what does Words twice mean as information?

Every word, or group of words, in this message will be transmitted twice

When would the phrase Words twice be used?

Because communications are difficult, every word, or group of words, in this message will be transmitted twice

What is the saying to remember when managing radio communications?

If in doubt, shout.

What wider problem could cause a communications failure?

Electrical failure

During preflight checks, what radio and electrical checks should a pilot perform to avoid communications failure?

Correct frequency, radio controls correctly set, headset operating properly, avionics master switch on.

What type of airspace should be avoided after communication failure?

Controlled airspace should be avoided.

What are the alternative ways to communicate if the aircraft's radio has failed?

Hand-held radio, mobile phone.

What is an example of a specific type of airspace that should be avoided after communications failure?

Radio Mandatory Zones (RMZ)

In a non-standard situation with communications failure, what should the pilot's approach be?

A flexible approach, taking into account the circumstances.

Following communications failure, what weather conditions should the pilot remain in if possible?

Visual Meteorological Conditions (VMC)

What factors will impact the chances of establishing a mobile signal from within the cockpit?

The aircraft's altitude and the terrain being overflown.

Why is it important to keep an especially good lookout and be prepared to 'give way' to other traffic near an airfield after a communications failure?

The airfield and traffic around it may not be expecting your arrival.

What does PTT stand for regarding radio communications?

Press To Talk

What headset checks should be performed to solve communications failure during flight?

Headset volume controls, headset plugged in, headset power, headset wireless system

If the pilot experiences communication failure during flight, what corrective actions should be taken?

Correct frequency selected, radio controls set, headset operating properly, Avionics Master Switch on, no wider electrical problem.

When troubleshooting loss of communication, what should you check for system-wide?

Is there a wider problem, such as electrical failure?

If you receive a series of white flashes, what is given in due course?

Clearances to land and to taxi will be given in due course.

What does RMZ stand for?

Radio Mandatory Zone

After a communication failure, why is it important to determine fuel/range/endurance remaining?

To determine the fuel available and the aircraft's flight time limitations.

If the radio signal fails, what is the recommended way to position on approach to the tower?

To position on the ‘dead side’ of the circuit, close to the tower at circuit altitude/height

After confirmed radio failure, what factors should be taken into consideration for the remainder of the flight?

How much daylight remains

What weather conditions should be maintained and when you should the flight be planned to land after loosing radio communication?

Remain in VMC if possible and land before sunset if possible

When the transponder is operating, what squawk code should be selected after a radio communication failure?

Radio failure squawk (7600)

After suffering radio communication failure, what measures can be adopted to improve communication, while using it?

Speak slower; Words twice

Check for correct frequency set up of the aircraft for communication

Is the frequency selected to 'active' (as opposed to 'standby’)?

Check that aircraft avionins and radio are turned on before flight and use

Are the radio controls set-up?

Check if plane is receiving a signal

Is the radio turned on?

Why should you give way to aircraft when approaching to land after have lost the plane's radio signal?

Give way to other aircraft unware of loss of communicaton

What factors can impact establishing a mobile signal from in plane?

Aircraft's altitude, terrain

When your radio dies what action is not affected ?

Not alter the flying characteristics of the aircraft

One of the radio controls question

Is you correct frequency?

Priority Action Checklist

Aviate:Navigate:Communicate

Caution that aircraft must follow when entering controlled airspace

The aircraft must not enter controlled airspace without permission

Check frequency is working when trouble shooting

Check hours of operation on frequency

What can pilots use as a back-up

Hand-held radio

What type of signal rocks the wings

Non-radio signal

When to land when the coms are down

Land before sunset

Squawk 7600

Radio failure

What to do when you think they can hear you but they cant respond

Transmit blind

Last ditch com

Mobile phone

What is the priority of tasks?

Aviate:Navigate:Communicate

Trouble Shooting measure?

Check volume on radio

Where to land following failure

Outside controlled airspace

Three short dashes

Say Again

Aircraft consideration

Give way

What can you do with the transponder to signal failure?

Squawk the code

What is the non radio signal for acknowledge light signal

Rock aircraft's wings

What second radio do pilot carry

A hand-held

Pilots Priorities?

Aviate : Navigate : Communicate

Landing location

Airfield outside Controlled Airspace

Failure Squawk?

7600

For Radio Transmission call

Speechless Code

Speechless code

Radio Transmission Call

Unknown meaning

AIE