Squawk Box

August 1999 Issue

ELTs Blowing Fuses

ELTs on new Cessnas and others may not work because of improper handling

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts. Click here to view "Airworthiness Directives."


An FAA avionics inspector in the Scottsdale, Ariz., FSDO reported that he has found the ELT remote switch circuits to be defective on two separate new Cessna 172s.

The Pointer 3000-11 model ELTs were both factory installed as original equipment by Cessna. An investigation by the manufacturer determined that the internal fuse had failed, but the manufacturer claimed the problem had been traced to Cessna’s post-production test procedure several years ago.

The problem was fi...

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