Service difficulty report · Pressure Switch · Boeing 767424ER

Difficulty date
September 26, 2023
Submitted
September 27, 2023
Operation
Air carrier
Aircraft
N76054
Make and model
Boeing 767424ER
Aircraft serial
29449
Aircraft time
88,636 hours, 12,614 cycles
Part
Pressure Switch
Part number
21SN04466
Part serial
CFL5717B
Condition
Faulty
Location
Rh Eng
Part time
76,404 hours, 11,113 cycles
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

HAD R ENG FUEL BYPASS ON MULTIPLE OCCASSOINS W HIGH PWR SETTING IN CLIMB PERFORMED FIM 73-11 FAULT TREE 803 INSPECTED FUEL FILTER NO CONTAMINATION NOTED R&R FUEL FILTER REF AMM 73-11-03-404-009-H00 LEAK CHECK STILL REQUIRED NEXT STEP IN TO REPLACE THE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH. NIS IAD REPLACED R FUEL FILTER DIFFERENTIAL PRESSURE SWITCH. REQIRES IDLE RUN FOR OPS TEST & LEAK CK. REF AMM 73-34-01. PERFORMED ENGINE IDLE RUN (TEST 2&3). OPS CK NORMAL NO LEAKS NOTED.