Aeronautical Telemetry Ref: PTFS-ATC-V4

ATC Phraseology Compendium

Standardized pilot-to-controller readback protocols, radio frequency taxonomies, and emergency distress procedures calibrated for Singapore Airlines flight operations.

Guard Channel121.500 MHz
Standard IFRSquawk 2000
SHOWING:9OF 9 PROTOCOLS
IFR Departure
Standard Instrument Departure (SID) Clearance
FREQ: 121.650 MHz
SQUAWK: 4215
AIR TRAFFIC CONTROLLER (TX)

"Singapore 211, Cleared to Hong Kong via KEXEN 2A departure, climb and maintain FL140, squawk 4215."

SINGAPORE CREW READBACK (RX/TX)

"Cleared to Hong Kong via KEXEN 2A departure, climb and maintain FL140, squawk 4215, Singapore 211."

Phonetic Articulation & Delivery

KEXEN pronounced KEY-ZEN. Emphasize destination Hong Kong and assigned transponder code clearly.

Flight Safety Critical Caution

Always read back altitude assignments, squawk codes, and departure waypoint routes in full verbatim.

Approach
ILS Intercept & Landing Clearance
FREQ: 119.300 MHz
SQUAWK: 4215
AIR TRAFFIC CONTROLLER (TX)

"Singapore 211, Turn right heading 200, descend and maintain 3000, cleared ILS Runway 20R, report established."

SINGAPORE CREW READBACK (RX/TX)

"Right heading 200, descend 3000 feet, cleared ILS Runway 20R, will report established, Singapore 211."

Phonetic Articulation & Delivery

Confirm runway identifier TWO-ZERO RIGHT to prevent wrong-surface approach attempts.

Flight Safety Critical Caution

Do not descend below 3,000 ft until glide slope capture or cleared by approach controller.

VFR Pattern
VFR Transition & Airspace Transit
FREQ: 118.100 MHz
SQUAWK: 1200
AIR TRAFFIC CONTROLLER (TX)

"Singapore 88, Cleared through Class Bravo airspace, maintain VFR at or below 2,500, altimeter 29.92."

SINGAPORE CREW READBACK (RX/TX)

"Cleared through Class Bravo, maintain VFR at or below 2,500, altimeter 29.92, Singapore 88."

Phonetic Articulation & Delivery

Bravo pronounced BRAH-VOH. Verify altimeter setting two-niner niner-two.

Flight Safety Critical Caution

Entry into controlled airspace is strictly prohibited without explicit 'Cleared through' call.

Push & Start
Pushback and Engine Startup
FREQ: 121.900 MHz
SQUAWK: Stand B4
AIR TRAFFIC CONTROLLER (TX)

"Singapore 211, Pushback and start approved facing South, tail East, QNH 1013."

SINGAPORE CREW READBACK (RX/TX)

"Push and start approved facing South, QNH 1013, Singapore 211."

Phonetic Articulation & Delivery

Confirm push orientation direction precisely relative to ramp apron guide markings.

Flight Safety Critical Caution

Ensure ground crew clear interphone link and chocks removed before applying breakaway thrust.

Taxiway Operations
Progressive Taxi & Runway Hold Short
FREQ: 121.900 MHz
SQUAWK: Stand B4
AIR TRAFFIC CONTROLLER (TX)

"Singapore 211, Taxi to Runway 20C via Alpha, cross Taxiway Echo, hold short of Runway 20R at November."

SINGAPORE CREW READBACK (RX/TX)

"Taxi to Runway 20C via Alpha, cross Echo, hold short of Runway 20R at November, Singapore 211."

Phonetic Articulation & Delivery

Alpha (AL-FAH), Echo (ECK-OH), November (NO-VEM-BER). Spell intersecting taxiways clearly.

Flight Safety Critical Caution

Mandatory readback: all hold short instructions and runway crossings must be spoken completely.

Line Up & Wait
Runway Conditional Entry
FREQ: 118.100 MHz
SQUAWK: 4215
AIR TRAFFIC CONTROLLER (TX)

"Singapore 211, Runway 20C, line up and wait, traffic landing on 20R."

SINGAPORE CREW READBACK (RX/TX)

"Runway 20C, line up and wait, Singapore 211."

Phonetic Articulation & Delivery

Acknowledge runway conditional designation. Never assume immediate takeoff clearance.

Flight Safety Critical Caution

Turn on strobe lights upon crossing the hold short line to ensure visibility on radar/visual feed.

Distress Call
Mayday Declaration (Engine Fire / Control)
FREQ: 121.500 MHz (Guard)
SQUAWK: 7700
AIR TRAFFIC CONTROLLER (TX)

"Singapore 211, Mayday acknowledged. State nature of emergency, souls on board, and fuel remaining. Radar contact."

SINGAPORE CREW READBACK (RX/TX)

"MAYDAY MAYDAY MAYDAY, Singapore 211, Engine number 1 fire, request immediate right turn return to Changi, 280 souls, 4 hours fuel."

Phonetic Articulation & Delivery

Repeat MAYDAY three times. Clearly state callsign, aircraft type, souls on board (SOB), and endurance.

Flight Safety Critical Caution

Squawk 7700 immediately if advised or pilot flying determines total system emergency priority.

Urgency Call
Pan-Pan Protocol (Medical / Fuel Priority)
FREQ: 119.300 MHz
SQUAWK: 4215
AIR TRAFFIC CONTROLLER (TX)

"Singapore 211, Pan-Pan acknowledged, direct vector heading 040 for priority approach Runway 02L."

SINGAPORE CREW READBACK (RX/TX)

"PAN-PAN PAN-PAN PAN-PAN, Singapore 211, Passenger medical emergency, request priority landing and medical on stand."

Phonetic Articulation & Delivery

Pronounced PAHN-PAHN. Indicates urgency concerning safety of aircraft/person without immediate life risk.

Flight Safety Critical Caution

Keep transmissions brief. Confirm ambulance/medical dispatch readiness with controller.

NORDO Protocol
Lost Communications / Transponder Loss
FREQ: 121.500 MHz
SQUAWK: 7600
AIR TRAFFIC CONTROLLER (TX)

"[Visual light gun: Steady Green = Cleared to land; Flashing Red = Airport unsafe, do not land]"

SINGAPORE CREW READBACK (RX/TX)

"Transmitting in blind: Singapore 211, experiencing COM1/COM2 receiver failure, squawking 7600, proceeding via standard STAR."

Phonetic Articulation & Delivery

Squawk Seven-Six-Zero-Zero. Maintain last assigned altitude or minimum sector altitude, whichever is higher.

Flight Safety Critical Caution

Squawk 7600 immediately. If in VMC, remain VFR and land at nearest suitable aerodrome observing tower light signals.

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