Service difficulty report · Relay · Boeing 767306

Difficulty date
April 25, 2019
Submitted
May 2, 2019
Operation
Air carrier
Aircraft
N1321A
Make and model
Boeing 767306
Aircraft serial
27957
Aircraft time
83,939 hours, 19,688 cycles
Part
Relay
Part number
BACR13CF2A
Condition
Faulty
Location
Fuel System
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

LT FWD FUEL LOW PRESS LIGHT INOP.(<P>TRANSFERRED TO DMI 110717. PERFORMED MX PROCEDURES PER DDG 28-42-01-01, SYS OPS NORMAL AT THIS TIME PER DDG.</P><P>LP 1058397 - M7: PERFORMED FIM 28-25 FT807. PASSES STEP 1 . BUT SUSPECT PROBLEM WITH RELAY K176 PER WDM 49-15-11. MCC NOTIFIED . DMI REMAINS OPEN.</P><P>LP 1058344 - 1: PERFORMED MAINTENANCE ACTIONS FOR LEFT FWD FUEL BOOST PUMP EICAS MESSAGE FOR PRESSURE LIGHT ILLUMINATION PER MEL # 28-42-01-01. OPS CHECK GOOD. DMI # 110717 REMAINS OPEN. </P><P>LP 1058346 - M7: PERFORMED TROUBLESHOOTING ON DMI 110717 LT FWD FUEL PUMP PSI LIGHT STAYS ILLUMINATED DURING APU START IAW FIM 28-25 FAULT TREE 807 AND SUSPECT BOOST PUMP PSI SWITCH S70. REF LP 1058344/M3</P><P>LP 1058356 - M4: REMOVED AND REPLACED RELAY K176 IAW WDM 49-15-11. OPS CHECK IAW AMM 28-22-00, NORMAL AT THIS TIME. THIS CLOSES DMI 110717. PLACARDS REMOVED. </P>)