Service difficulty report · Monitor · Bell 212

Difficulty date
December 20, 2010
Submitted
September 14, 2015
Operation
General aviation
Make and model
Bell 212
Aircraft time
17,957 hours
Engine
Pwa PT6T3B
Part
Monitor
Part number
212040122101
Condition
Misinstalled
Location
Oil Debris
Component
Transmission · Bell
Component part number
212540002103
Stage of operation
CR
How discovered
O
Nature of condition
W
Precautionary procedure
B

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

What was found

(CAN) IN-FLIGHT THE MASTER CAUTION THE TRANSMISSION OIL PRESSURE LIGHT ILLUMINATED AND THE TRANSMISSION OIL PRESSURE WAS RAPIDLY FALLING. THE ACFT WAS LANDED IMMEDIATELY IN A SAFE ZONE. UPON LANDING, OIL WAS CONFIRMED LEAKING FROM THE TRANSMISSION. TRANSMISSION INSPECTED AND LEAKAGE FOUND FROM DEBRIS MONITOR. NOTED THAT MONITOR WAS INCORRECTLY ORIENTED AND TRANSMISSION OIL LINE BRACKET, PN 205-040-123-101 HAD CRACKED, ALLOWING DEBRIS MONITOR TO LIFT ON STUDS. THIS RESULTED IN THE FAILURE OF THE DEBRIS MONITOR O-RING AND ALLOWED OIL LEAKAGE FROM M/R TRANSMISSION PRESSURE SYS. DEBRIS MONITOR WAS INSPECTED, O-RING, PN M25988-037, REPLACED AND MONITOR INSTALLED IN CORRECT ORIENTATION, CONNECTOR PLUG AT BOTTOM, ID TAG AT TOP. BRACKET, PN 205-040-123-101 REPLACED, GROUND RUN AND LEAK CHECK C/O WITH NO LEAKAGE NOTED.

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