139 electrical bonding check
You may want to check with your maintenance department and see if your fleet has a problem like this with the starter / Gen, we have it in more than one aircraft. It is a possible fire hazard. I suspect Agusta will notify users regarding this soon.
We are preparing the repair Scheme. Please ship back to AW the removed parts (the Grounding Bracket + the Bonding Block + the Bonding Cable + the DC Transformer)for further investigation.
Grounding Cable Installation inspection and a continuity check on the whole assembly is requested.
Please refer to the drawings already provided by XXXX and check for continuity between the logeron and point GS301 and then from GS301 and the starter generator.
We request just an additional check:
Before the first flight perform a test engine start with the baggage compartment open and the baggage compartment liner removed in order to inspect the bonding plate for electrical arches.
If continuity check is succesfully performed and no arches are visually detected during the test engine start restore the baggage compartment liner and consider the A/C flyable.