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HF test on 737

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HF test on 737

Old 5th Jan 2011, 03:17
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HF test on 737

can anybody tell me the HF test procedure on 737-NG,test during the preflight .

thank you

Last edited by b744FPEK; 7th Jan 2011 at 01:48.
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Old 5th Jan 2011, 07:38
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Can you ask more precisely?
Do we talk about a 737 jurassic, classic or new generation?
Operational test or communication test?
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Old 7th Jan 2011, 01:49
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thanks, ifixplanes
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Old 7th Jan 2011, 05:48
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You are welcome.
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Old 7th Jan 2011, 07:29
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One company's SOP...

b744FPEK,

A couple of points:

1. Don't transmit on HF during refueling.
2. Not a good idea to transmit on HF when ground personnel are close by.
3. To test, use an LDOC frequency. (One that is not necessarily used for ATC.) For example, a company frequency, or an ARINC frequency that is used for company traffic...phone patches, etc. If unavailable, then use a frequency that works.


Tune both HFs to the same frequency (as selected above). Hit the mic for a moment to get the auto-tune going. (Do this for each HF.)

Call your station on HF1. Wait for reply.

When reply is received, go to HF2 and ask for a SELCAL check. Give your SELCAL code.

Wait for SELCAL on each/both HF receivers.

This method tests the transmitters for both HFs, the receivers for both HFs, and the SELCAL function for both HFs.


Fly safe,

PantLoad
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Old 7th Jan 2011, 07:53
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hmm

Do not do a preflight on your HF! "understanding ifixplanes sarcasim"....
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Old 7th Jan 2011, 08:39
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Do not do a preflight on your HF!
- care to expand on this? It is often a requirement.
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Old 7th Jan 2011, 09:43
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Yes, it is a requirement when...

While I can't quote specific, individual airline SOPs, I can cite Airbus FCOM 3.03.06 P6.

Yes, if the HFs are to be used for that flight, they need to be checked before departure.

At my old airline (from which I retired), it was a requirement (both on Airbus and Boeing aircraft) to do so....if the HFs were to be used for that flight.

By the way, while you're screwing with the HFs, you can set your watch and the aircraft clock (if necessary). This requirement is basic instrument flying......(setting the clock...or checking for accuracy). This was, again, not only my old airline's SOP, but the Airbus and Boeing SOP, as well.


Fly safe,

PantLoad
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Old 7th Jan 2011, 10:15
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The clock on newer 737s is automaticly slaved to GPS, on our older ones we have to press a button to switch between MAN and UTC (which is slaved to GPS). Time is not a big issue nowadays anymore with GPS, HF on the other hand still might be.
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