Service difficulty report · Motor · Beech C99

Difficulty date
April 24, 2014
Submitted
April 30, 2014
Operation
Air carrier
Aircraft
N131GP
Make and model
Beech C99
Aircraft serial
U225
Aircraft time
21,499 hours, 32,578 cycles
Part
Motor
Part number
1153800025
Part serial
619
Condition
Failed
Location
Mlg
Part time
1,029 hours, 1,044 cycles
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

DURING VISUAL APPROACH, SELECTED MLG DOWN, LANDING GEAR FAILED TO EXTEND WHICH RESULTED IN GEAR UNSAFE LIGHT ILLUMINATING. RECYCLED GEAR WITH SAME RESULT, FURTHER TROUBLESHOOTING REVEALED THE GEAR RELAY CIRUCIT BREAKER TRIPPED. RESET CIRCUIT BREAKER & TRIED TO RECYCLE GEAR WITH SAME RESULTS. MANUALLY EXTENDED GEAR WITH THREE GREEN DOWN & LOCK INDICATOR LIGHTS ILLUMINATED. LANDED WITHOUT FURTHER INCIDENT. TROUBLESHOOTING REVEALED FAULTY LANDING GEAR MOTOR. R & R MOTOR ASSEMBLY & PERFORMED OPS CHECK IAW MM 32-31-00, NOTED CHECKED WERE NORMAL.

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