Service difficulty report · Relay · Boeing 767328

Difficulty date
March 11, 2019
Submitted
March 18, 2019
Operation
Air carrier
Aircraft
N1499A
Make and model
Boeing 767328
Aircraft serial
27428
Aircraft time
77,600 hours, 16,865 cycles
Part
Relay
Part number
BACR13CD2
Condition
Failed
Location
Ac System
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AFTER ENGINE START FWD EQPT VALVE EICAS AND ASSOCIATED VALVE OVERHEAD LIGHT ILLUMINATED (<P>TRANSFER TO MDDR 108533 IAW DDG 21-58-06 CAT D </P><P>LP 1014012:PERFORMED THE FIM 21-58 FAULT TREE 986, FOUND FAULTY RELAY IN P-36 PANEL (FIM CALLS FOR REPLACEMENT ON INBOARD SUPPLY VALVE IND RELAY - K1007). COULDN'T FIND RELAY AS A/C HAS UNDERGONE CONVERSION.</P><P>LP 1040414: REMOVED AND REPLACED EQUIP COOLING CARD IAW AMM 21-58-24 (P/N: 285T0095-8, S/N: D00628). NO HELP, MDDR # 108533 REMAINS OPEN. </P><P>DURING A-CHECK, REF NR 00002 & LP 1040426; <SPAN>REPLACED K1007 AND K1008 RELAYS. GROUND TEST FAILED. REPLACED K1006 AND K1011 ON P136 PER </SPAN>WD 21-58-12 AND 21-58-11. OPS CHECKED V90,V178,V178, AND V12. GROUND TEST EQUIP COOLING OK PER AMM 21-58-00. </P><P>MDRR 108533 CLEARED AND PLACARD REMOVED. </P>)