Transmitter Test

In general, follow these precautions:

· Tell the control tower of your plan to test the ELT

· Do the tests only within the first 5 minutes after the hour

· Turn on the ELT for less than 15 seconds.

The satellite receivers ignore any ELT transmission that is less than 15 seconds. If the ELT transmits more than 15 seconds, the satellite receivers process the transmissions as an emergency signal.

To do a test of the 121.5/243.0 MHz transmitter, use one of the VHF transceivers to listen to the ELT transmission.

When you put the ELT control switch to ON, you hear three sweeps of the emergency audio.

The ELT light on the control panel and the master caution lights come on immediately when you put the switch to ON. The ELT light goes off when you put the switch back to ARM.

You use special test equipment to test the 406 MHz transmitter.

The test equipment shows the digital data that the ELT sends.