Service difficulty report · Duct · Beech B300

Difficulty date
November 12, 2018
Submitted
November 19, 2018
Operation
Air carrier
Aircraft
N839UP
Make and model
Beech B300
Aircraft serial
FL984
Aircraft time
3,589 hours, 3,090 cycles
Part
Duct
Condition
Cracked
Location
Lt Wing Ram Air
Part time
1,196 hours, 1,036 cycles
Stage of operation
CL
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

LANDING GEAR CONTROL CIRCUIT BREAKER EXTENDED ON GEAR RETRACTION. MAINTENANCE REPAIRED CHAFFED WIRES FOUND UNDER LEFT WING LEADING EDGE RAM AIR DUCT THAT WAS FOUND CRACKED AND CAUSING THE GEAR CONTROL BREAKER TO EXTEND. LEFT MAIN GEAR SAFETY SWITCH WAS ALSO REPLACED. GEAR SWINGS AND A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. AIRCRAFT WAS RETURNED TO SERVICE.

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