Service difficulty report · Line · Gulstm 690B

Difficulty date
December 21, 2011
Submitted
September 14, 2015
Operation
General aviation
Make and model
Gulstm 690B
Aircraft time
6,894 hours
Engine
Garrtt TPE3315251K
Propeller
Hartzl HCB3TN5
Part
Line
Condition
Misinstalled
Location
Fuel System
Stage of operation
IN
How discovered
9
Nature of condition
W
Precautionary procedure
K

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

What was found

(CAN) UPON DISCONNECTING COMPONENTS TO REMOVE THE CENTER SECTION BLADDERS, SOME COMPONENTS WERE FOUND TO BE CONNECTED INCORRECTLY. UPON CONSULTING MM TO VERIFY WIRING, FOUND THE FOLLOWING: THE RT ENGINE FUEL LINE WAS CONNECTED TO THE LT FUEL SHUTOFF AND THE RT FUEL BOOST PUMP. THE LT ENGINE FUEL LINE WAS CONNECTED TO THE RT FUEL SHUTOFF AND THE LT FUEL BOOST PUMP. THE FUEL LINES WERE SWAPPED UPON PREVIOUS INSTALLATION AND THE BOOST PUMP WIRING WAS SWAPPED. THIS IS EVIDENCE THAT A FIX FOR THE PROBLEM WAS PREVIOUSLY MADE WITH SWAMPING THE WIRING TO MAKE THE SYS FUNCTION NORMALLY. HOWEVER THE TRUE ROOT CAUSE WAS NOT DISCOVERED IN THAT THE FUEL SYS PLUMBING ERROR WAS NOT RECTIFIED.