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De-Icing Procedures


FS2Crew for the PMDG 737 NGX models de-icing procedures both at the stand and at remote pads.

Notes:

You should radio the de-icing coordinator at least 15 minutes prior to engine start to coordinate de-icing.

IMPORTANT (REQUIRED COMM RADIO FREQ):

To communicate with the de-icing crew on the radio, you must set COMM RADIO 1 or COMM RADIO 2 to 121.65.



To initiate the conversation with the de-icing crew, using the following trigger phrase, which must be spoken separately and clearly from any other phrases so the speech recognition system can easily detect the phrase..

 “REQUESTING DE-ICING”.

Example:  "De-Ice Coordinator, it's American Flight 24... requesting de-icing."



You will then tell the De-Ice Coordinator what your requirements are for de-icing and your estimated departure time in 'Zulu' time.

The trigger speech phrase to close the conversation is “ZULU TIME”.

Just prior to de-icing and if you want to de-ice at the gate prior to engine start, command the FO to prepare for de-icing by speaking:
“PREPARE FOR DE-ICE”.

Note that if you are de-icing at a remote pad, you would speak “PREPARE FOR DE-ICE” just prior to the start of de-icing procedures.

The FO will then perform his de-ice prep flow: 

  1. APU Bleed Off. 
  2. Engine Bleeds Off.

As Captain, you are responsible for:

  1. Setting the stab trim full nose down.
  2. Ensuring the flaps are up.  Ask the FO to raise the flaps.  Use the speech command: "FLAPS UP".
  3. Ensuring idle thrust.

The FO will leave the APU running if it is already on.  If you wish to have the APU off during de-icing, you must manually shut-it down, however, ensure the ground power is connected or you will lose power.  If you’re at a remote pad, leave the engines running.  Make sure Wing Anti-Ice is 'off'.

After the FO has completed his de-icing flow, speak: “DE-ICE COORDINATOR WE ARE READY FOR DE-ICING” to tell the De-Ice coordinator that you’re ready to start the de-icing.

The de-icing team will then de-ice the aircraft.  This procedure takes approximately 3 minutes.



When de-icing is complete, the De-Ice Coordinator will radio you, and provide you with his employee number, the start and end time, etc.

Speak “THANK YOU FOR YOUR HELP” to disconnect the De-Ice Coordinator; that phrase is also the trigger for the FO to configure the aircraft after the de-icing. 

Note that the FO will wait one before before turning the bleeds back on to prevent de-icing fumes from being ingested into the aircraft.  Please be patient during this period.

As Captain, you need to:

  1. Reset the Stabilizer trim to the takeoff setting.
  2. Move the control column full forward/aft  three times to drain any residual fluid from the elevator balance bays.