Service difficulty report · Warning Light · Urocop EC135P2

Difficulty date
July 14, 2017
Submitted
July 17, 2017
Operation
Air carrier
Aircraft
N135HN
Make and model
Urocop EC135P2
Aircraft serial
0839
Aircraft time
4,820 hours, 14,206 cycles
Part
Warning Light
Condition
Illuminated
Location
Transmission
Part time
8,241 hours, 2,210 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CLIMB-OUT, EXPERIENCED A MASTER CAUTION ILLUMINATION WITH A CORRESPONDING TRANSMISSION CHIP IN THE MISCELLANEOUS SECTION OF THE CAD. AFTER 3X ACTIVATION OF THE CHIP BURN SWITCH IAW THE CHIP PULSE PROVISIONS OF THE FMS, THE TRANSMISSION CHIP CAUTION LIGHT REMAINED ILLUMINATED. COMPLIED WITH THE APPLICABLE EMERGENCY PROCEDURE LOCATED IN THE BASIC HELICOPTER FLIGHT MANUAL AND LANDED AS SOON AS PRACTICABLE. THE CHIP DETECTOR WAS INSPECTED AND CLEANED. THE AIRCRAFT RETURNED TO SERVICE WITHOUT FURTHER TRANSMISSION CHIP ILLUMINATIONS. MAINTENANCE INSPECTED CHIPS IAW WITH AMM. DURING INSPECTION IT WAS DETERMINED THAT THE MAGNETIC DEPOSITS ON THE CHIP DETECTOR WERE CATEGORY A AND WITH NO OTHER CHIP EVENTS WITHIN THE LAST 100 FH THE CHIP DETECTOR WAS CLEANED AND THE AIRCRAFT WAS RETURNED TO SERVICE PER THE AMM.

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