Service difficulty report · Chip Detector · Bolkms BK117A4

Difficulty date
May 20, 2016
Submitted
May 24, 2016
Operation
Air carrier
Aircraft
N911MZ
Make and model
Bolkms BK117A4
Aircraft serial
7098
Aircraft time
13,488 hours
Engine
Lyc LTS101*
Engine time
10,319 hours, 20,719 cycles
Part
Chip Detector
Condition
Contaminated
Location
Nr 2 Engine
Stage of operation
AA
How discovered
O
Nature of condition
J
Precautionary procedure
E

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

What was found

NUMBER 2 ENG CHIP LIGHT IN CRUISE, WOULD NOT EXTINGUISH WITH 3 ZAPS. SHUTDOWN NR 2 ENG IAW ACFT EMER PROCEDURE CHECKLIST. UPON ARRIVAL, INSPECTED THE CHIP DETECTOR FOR DEBRIS. COLLECTED & PRESERVED THE DEBRIS COLLECTED & TOOK A SOAP SAMPLE FOR ANALYSIS WITH ADVICE FROM LEAD, RMM, & TECH SUPPORT.. DETERMINED DEBRIS ACCUMULATION TO BE CLASSIFIED AS MINOR. HE THEN PERFORMED A DRAIN & FLUSH FILTER CHANGE OF MOTOR. THE PILOT CONDUCTED A 15 MINUTE PENALTY GND RUN & THEN THE MECHANIC RE-INSPECTED THE CHIP DETECTOR FOR DEBRIS POST GND RUN WITH NO DEBRIS FOUND. ANNOTATED PROCEDURES & FINDINGS IN ACFT LOGBOOK & RELEASED ACFT FOR NO MORE THAN 50 FLIGHT HOURS PENDING RESULTS OF SOAP SAMPLE.