Introduction to Headset Communication:
Communication between the ground and flight deck is essential for many operations such as push-back, fuelling and a variety of maintenance and servicing operations.
Headset man must exercise extreme caution and be constantly aware of his position relative to the aircraft, its movement and position himself accordingly. Headset man must also ensure that the interphone cord remains clear of moving aircraft and ground equipment.
AIRCRAFT PUSHBACK
Prior to departure the headset man will make a final walk around to ensure that all doors and servicing panels are closed and secured. Also that no visible damage is apparent after the completion of loading process
• The following will be confirmed before the pushback commences. 1. Pitot covers and gear pins removed
2. Steering bypass pin installed where applicable 3. Chocks in position
• The headset man must be fully aware that any distraction by non essential personnel is not to be entertained during the pushback operation
• Once the aircraft is almost ready for departure, the headset man will remain on headset waiting for Captain’s call.
CAUTION: Chocks must be removed prior to push back when all equipment are clear off the aircraft. Communication with the pushback operator will be with standard hand signals.
COMMUNICATION BETWEEN GROUND AND COCKPIT
• Crew: Ground cockpit
• Tech: Cockpit Ground - Go Ahead
• Crew: Clear for pushback facing (direction or runway will be advised.)
• Tech: Cockpit Ground- Clear for pushback facing (direction to be repeated.) Confirm parking
brakes off.
• Crew: Ground cockpit- Brakes off Chocks off time (time will be advised)
• Signal to the pushback operator that the aircraft brakes are released and to commence pushback by touching nose and pointing to the direction that the aircraft nose is required to face.
• Tech.: Cockpit Ground -Pushing back.
• After the aircraft has been pushed to the correct position and the pushback operator has applied the brakes, he will signal to the head set person for the aircraft brakes to be applied using standard hand signals.
• Tech: Cockpit Ground -Pushback is complete. Set Parking brake. • Crew: Brakes are set.
• Tech: Roger, Stand by
Warning: Tow bar must be disconnected from tractor before disconnecting from aircraft. • Once all the equipment is clear from the aircraft remove steering bypass pin
• Tech: Ground cockpit- Steering bypass pin removed, all ground equipment is clear look for hand signal from (RH /LH) side
• Crew: Clear to disconnect and standing by for hand signal.
Disconnect headset close and secure panel. The technician will walk to the indicated side and give a thumb up signal by holding steering bypass that can be clearly seen by the crew until taxi out has been established safely.
Note:
• Captain – Flash landing Lights continuously if Headset Man is required to return to the aircraft • Headset Man – If the Headset Man requires returning to the aircraft to communicate to the
cockpit, wave the headset /marshalling torch in the air to attract the attention of the flight crew. This signals intention to return to the aircraft. When the flight deck crew have acknowledged Headset Mechanic’s signal by flashing landing lights continuously, the Headset Mechanic will approach the aircraft with caution and carryout the appropriate communication
PUSH BACK ABNORMALITIES
• As the tug pushes back the aircraft, the mechanic will monitor and advise the pilot of any abnormalities and maintain communication with the pushback operator either verbal or visual to maintain control of any abnormal situation.
Tow bar shear pin failure
• Instructs the pushback operator to halt the push back and bring the aircraft to a halt slowly. Inform the flight crew.
• TECH.: Cockpit Ground - set Park Brakes. Tow Bar shear pin failure. • CREW: Ground cockpit- Roger, park brakes are set.
• TECH.: Cockpit Ground - Standby for replacement tow bar • Crew: Standing by
• Once the tow bar has been replaced continue with the pushback as per standard pushback procedure
Tow bar breakage/ separation from the aircraft • TECH.: Cockpit Ground - Tow bar failure Apply brakes
• WARNING: Inform the pushback operator to move clear of the moving aircraft as quick as possible and the headset man needs to move clear to safe distance.
• CREW: Brakes are set
• TECH.: Cockpit Ground - Standby for replacement tow bar
• CAUTION: Should any damage be apparent, then a licensed engineer should assess the damage before the aircraft is released.
• CAUTION: The headset may become detached or unplugged when a tow bar fails, do not try to approach a moving aircraft. Move clear and using hands signals indicate for the crew to apply brakes. Only when the aircraft has halted, reconnect the headset to the aircraft.
ENGINE START
• Before, during or after push back the flight crew advises the mechanic of when and where they will start the engines. Standard phrases will be used during engine start
• CREW: Ground cockpit-Clear to start engines
• TECH.: Cockpit Ground - Clear to start (as specified) or stand by if area is not clear.
• When the clearance is given to start engines by the mechanic, he will monitor engine rotation and any abnormalities.
• CREW: Ground cockpit-Starting (as specified) engine..
• Crew: Ground cockpit- Ground, we have good starts; you are clear to disconnect and signals from the LH or RH side.
ENGINE START ABNORMALITIES
• All abnormalities require instant response and clear reports to the flight deck crew as to the nature of the abnormality.
Tailpipe fire
• This type of fire will normally extinguish as the engine rotation increases up to stabilized rpm. The normal cause is residual fuel in the engine. The crew should only be advised and updated as to the status, but no request should be made to shut the engine down. Communication will be as
follows:-• TECH.: Cockpit Ground - you have a tailpipe fire • CREW: Ground cockpit-Roger keep me informed. • Once the fire has gone out
• TECH.: Cockpit Ground - Tailpipe fire has extinguished.
• If the engine reaches idle and the fire has not gone out, the crew will increase the throttle to try and blow out the fire.
• CREW: Ground cockpit-Confirm status
• TECH.: Cockpit Ground - Fire is out, standby for inspection by the engineer
• If starter is still engaged then the Flight deck Crew operate fuel start-cut off lever to close and allow engine to dry cycle , repeat until tailpipe fire extinguished.
• CREW: Ground
cockpit-• TECH.: Cockpit Ground - Go ahead
• CREW: Ground cockpit-Advise status of tailpipe fire
• After tailpipe fire extinguished the ground engineer will assess the area (from safe distance) for any signs of scorching or burning of the strut or wing area and confirm status to flight crew.
Under cowl fire
• Is potentially more hazardous than the tailpipe fire, the mechanic and crew should proceed as follows:
• CREW: Ground cockpit-Clear to start engine (as specified) • TECH.: Cockpit Ground - Engine (as specified) clear • CREW: Ground cockpit- Starting engine (as specified)
• TECH.: Cockpit Ground - Engine (as specified) on fire, shut down engine, (as specified) I repeat engine (as specified) on fire, shut down number engine as specified
• The flight crew will immediately call the tower for fire services. The ground crew will monitor the engine. If the fire extinguishes advice the flight crew as follows.
• TECH.: Cockpit Ground
-• CREW: Ground cockpit- Go Ahead
• TECH.: Cockpit Ground - Engine (as specified) Fire extinguished. • CREW: Ground cockpit-Copied
• At this point the Ground Engineer will assess the situation and action accordingly and confirm status to flight crew.
• If the fire continues after engine shutdown and or if the flight deck engine fire warming remains then the normal Flight deck fire drill will be observed.
• The mechanic will advise the flight crew as follows: • TECH.: Cockpit Ground –
• CREW: Ground cockpit-Go ahead
• TECH.: Cockpit Ground - Engine (as specified) still on fire • CREW: Ground cockpit- Copied
• The Ground Engineer at this point would tackle the fire with the portable fire extinguisher positioned at the stand. The mechanic must not leave the headset . The ground crew will ensure the area is clear for the arrival of the fire services. The ground crew should be aware that a passenger evacuation may be initiated by the flight crew.
Ingestion of foreign objects
• If the ground crew spot a potential foreign object, Waste bin liner or personnel in the vicinity of the engine then immediately inform the flight crew as follows.
• TECH.: Cockpit Ground - shut down engine (as specified); I repeat shut down engine (as specified), possible ingestion in engine (as specified)
• CREW: Ground cockpit-Engine (as specified) possible ingestion, standby • CREW: Ground cockpit-Standby
• At this point the Ground Engineer will assess the situation and clear the area of foreign objects or action accordingly if the engine has ingested a foreign object.
Engine start with defective APU
• Assuming the APU is unserviceable, ground power (electric) and the Air Start Unit already connected
• TECH.:.: Cockpit Ground -• CREW: Ground cockpit-Go ahead
• TECH.:.: Cockpit Ground - The air start unit & GPU are connected, standing by for engine start
• CREW: Ground cockpit-Ready to start engines, please provide pneumatic pressure • The mechanics will advice the equipment handler accordingly.
• TECH.:.: Cockpit Ground -, pneumatics is now supplied
• CREW: Ground cockpit-Pressure confirmed, starting engine (as specified) • TECH..: Cockpit Ground - Clear to start engine (as specified)
• Upon completion of engine start, the crew will advice to disconnect all ground equipment. Keep the cockpit standby and hand signal the equipment operator to disconnect and remove all GSE. Once equipment are clear
• TECH.: Cockpit Ground - All Ground Equipment clear and stand by for push back • The push back procedure to be followed.
PHRASEOLOGY
• According to International regulations and rules (ICAO), radio communication must be done in a certain fashion using phraseology with correct terminology in order to avoid
misunderstanding and misinterpretations when used in multilingual environments. • Following paragraph will handle necessary phraseology used at an airport.
STANDARD SPEECH ABBREVIATIONS
Phrase Meaning
• Affirm Yes (permission granted)
• Approved Permission for proposed action granted • Negative No (Permission not granted or not correct) • Correct That is correct
• Go ahead Proceed with your message (it does not mean proceed) • Report Pass me the following information
• Roger I have received and understood all your last transmission • Say again Repeat all, or the following part of your last transmission • Standby Wait – I will call you
• Speak slower Reduce your rate of speech 0 1 2 3 4 5 Ze-Ro Wan Too Tree Fow-Er Fife
6 7 8 9 Six Sev-En Ait Nin-Er
Thousand Tou-Sand Hundred Hun-Dred Decimal Day-See-Mal Examples: 10 Wun Zero 100 Wun Zero Zero (Wun Hundred) 853 Ait Fife Tree 90 Nin-er Zero 3000 Tree Tou-Sand
PHONETIC ALPHABET
The ICAO phonetic alphabet is given below.A Alpha Al-Fah B Bravo Bra-Vo C Charlie Char-Lee D Delta Dell-Tah E Echo Ech-Oh F Foxtrot Foks-Trot G Golf Golf H Hotel Hoh-Tell I India In-Di-Ah J Juliet Jew-Lee-Ett K Kilo Key-Loh L Lima Lee-Mah M Mike Maik N November No-Vem-Ber O Oscar Oss-Car P Papa Pah-Pah Q Quebec Keh-Beck R Romeo Row-Meh-Oh S Sierra See-Airrah T Tango Tang-Goh U Uniform You-Nee-Form V Victor Vik-Tah W Whiskey Wiss-Key X Xray Ecks-Ray Y YankeeYang-Key Z Zulu Zoo-Looh
