Service difficulty report · Relay · Boeing 767322

Difficulty date
December 12, 2019
Submitted
December 13, 2019
Operation
Air carrier
Aircraft
N672UA
Make and model
Boeing 767322
Aircraft serial
30027
Aircraft time
73,594 hours, 15,706 cycles
Part
Relay
Part number
XD4L015
Condition
Intermittent
Location
Overwing Slide
Stage of operation
IN
How discovered
V
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

SUPPORT TASK - FX DURING ACTIVATE OFF WING SLIDE SYSTEM, FOUND D OOR LATCH ACTUATOR FIRE REF NR LP 9131316 UPDATE PART CHANGE ADD EMP:V896895 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1107307 SN OFF 2146 TT # 1202506 SN OFF 1037 IPC REFERENCE # ACTUATOR, ASSY- OFF 76-2565-9-0002 2146 ON 76-2565-9-0002 2914 IPC REFERENCE # ACTUATOR, ASSY- OFF 76-2565-9-0002 1037 ON 76-2565-9-0002 1185 ADD EMP:V906404 4026798 RH OFF-WING LATCH ACTUATOR REPLACED, PART TRANSACTION REFER ELB RH DOOR ACTUATOR FIRED, OFF WING ESCAPE SYSTEM CHECKED FOUND 7DC VOLTAGE EXIST ON RH OFF-WING SLIDE CONNECTOR D1128 PIN POS A&B. CONFIRMED ALL ARM/FIRE SWITCHES ARE IN ARM POSITION.WIRING CHECK BETWEEN R WING SLIDE DOOR SQUIB AND R OFF WING ESCAPE SYSTEM EQ M1136 CARRIED OUT RESULT NORMAL PER WDM 25-65-12. WIRING CHECK ADD EMP:V897815 NORMAL PER WDM 25-65-12. ESCAPE SYSTEM MODULE EQ M1136 & SWITCH PANEL EQ P73 WIRING CHECK CARRIED OUT RESULT NORMAL PER WDM25-65 -12. SYSTEM BACK TO NORMAL FOUND NO POWER EXIST IN SLIDE CONNECT OR D1128 PIN POS A & B. SUSPECT SWITCHES S621, S625 AND RELAY K1 BETWEEN MODULE M1136 AND SWITCH PANEL EQ P73 CARRIED OUT RESULT & K3 FAILURE INTERMITTENT. SWITCH EQ S621 AND S625 REPLACED AND WING SLIDE COMPT LATCHES REPLACED PER AMM 25-65-09. LATCH OPENIN 65-12. BOTH DOOR OPENING ACTUATOR REPLACED PER AMM 25-65-10. OFF SLIDE DOOR SQUIB RELAY K1 AND TEST RELAY K3 REPLACED PER WDM 25- WIRING CHECK CARRIED OUT NORMAL PER AMM 25-65-15. RH OFFWING ESC ACTUATOR REPLACED (RE