Service difficulty report · Connector · Boeing 7374B7

Difficulty date
June 14, 2011
Submitted
June 16, 2011
Operation
Air carrier
Aircraft
N460UW
Make and model
Boeing 7374B7
Aircraft serial
25024
Part
Connector
Part number
BACC45FN2255S
Condition
Shorted
Location
E&E Bay
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

CLT - DURING APPROACH INTO CLT, CAPTAIN ADVISED THE FLAPS WOULD NOT RESPOND. DECLARED AN EMERGENCY AND LANDED AT FLAPS 15 USING ALTERNATE FLAP EXTENSION. THE FLIGHT LANDED AND TAXIED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT AND FOUND THE E3-2 RACK CONNECTOR D04518J SHORTING INTERNALLY BETWEEN PINS 25 AND 11 (REF WDM 27-53-11), CAUSING INTERMITTENT OPERATION OF FLAP ASYMMETRY RELAY R123 TO ENERGIZE, CAUSING TRAILING EDGE FLAP BYPASS VALVE TO DRIVE TO BYPASS. REPLACED CONNECTOR D04518J, REF SWPM 20-61-11. ALL REQUIRED OPS CHECKS ACCOMPLISHED SATISFACTORY ON AFFECTED SYSTEMS. AIRCRAFT OK FOR SERVICE.

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