Precautions when handling the ice detectors

Effectivity: Global aircraft (except Global 7500)

ATA 30

The purpose of this ice detection system article is to provide useful information to operators and tips to prevent damage to the ice detector.

It should be noted that a “SQUEEZE” test of the ice detector is not an approved method of testing the ice detector. The caution against using the “SQUEEZE” test is contained in AMM task 30-81-00-710-801. The action of squeezing or pinching the ice detector probe may result in a change of the probe frequency, with a consequence of false ice readings or faults linked to the probe frequency.

In addition, several returned probes were received with damage requiring the replacement of the base assembly. As per the Standard Practice Manual (SPM) for sealant removal (51−23−00−100−801), no metallic tool should be used, and the paint should be properly cut during removal. The following ice detection AMM removal task will be revised by adding a note to prevent damage to the probe during removal:

• Removal of the Ice detectors TASK 30-81-01-000-801

The ice detector probe is a sensitive device; precautions should always be taken when maintenance is performed in the surrounding area. Also note that when the aircraft is parked, the ice detector covers should be installed to prevent damage and increase the life of the probe.