SDR SWIA95537

Service difficulty report · Bypass Valve · Swrngn SA227AC

Difficulty date
March 5, 1995
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N176SW
Make and model
Swrngn SA227AC
Aircraft serial
AC591
Engine
Garrtt TPE33111U
Part
Bypass Valve
Condition
Malfunctioned
Location
Nr 2 Engine
Stage of operation
CL
Nature of condition
J
Precautionary procedure
C, D

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

What was found

NR 2 ENG BYPASSED AT 610 TEMP ON TO. AFTER ABORTING, RAN UP THE ENGINE TO DUPLICATE AND COULD NOT. DECIDED TO TRY TO POWER TO 615 ON NEXT TO AND UNTIL ABOUT 800 FT DID IT BYPASS FUEL AGAIN, HOWEVER, THE BYPASS VALUE WAS STUCK OPEN AND WOULD NOT STOP THE BYPASSING. RAN RIGHT ENG FOR BY PASS PROBLEM. ENG BYPASSES AT 650 DEG WITH SRL ON PERFORMED CHECK SEVERAL TIMES, NO DEFECTS NOTED. LEFT AND RIGHT FF THE SAME ON BOTH SIDES. INSPECTED RIGHT BY PASS VALUE AND WIRES. NO DEFECTED NOTED. COULD NOT DUPLICATE ON THE GROUND.