Service difficulty report · Sense Line · Boeing 7673Y0

Difficulty date
June 14, 2021
Submitted
June 15, 2021
Operation
Air carrier
Aircraft
N642GT
Make and model
Boeing 7673Y0
Aircraft serial
26207
Aircraft time
81,485 hours, 22,626 cycles
Part
Sense Line
Part number
S322T10033
Part serial
1202
Condition
Loose
Location
Rt Engine
Stage of operation
IN
How discovered
9
Nature of condition
N
Precautionary procedure
K

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

What was found

RIGHT FIRE LOOP 1 IS DISPLAYED(<P>LP 1299616, ITEM M22: FOR TROUBLESHOOTING SWAPPED LEFT FIRE DETECTOR LOOP 1 CIRCUIT CARD M681 WITH RIGHT FIRE DETECTOR LOOP; 1 CIRCUIT CARD M683, EICAS MSG DID NOT FOLLOW TO LEFT FIRE DETECT LOOP 1. SWAPPED BACK TO ORIGINAL POSITIONS FOR THE L/H AND R/H FIRE DETECT LOOP 1 CIRCUIT CARDS IAW AMM 26-10-01. RIGHT FIRELOOP 1 IS DISPLAYED ON EICAS.</P> / <P>ITEM M23: SLAVED IN LOOP 1 FROM REMOVED ENG. NO FIX. RETURNED BACK TO ORIGINAL CONFIGURATION AND PARTS IAW AMM 26-11-02.</P> / <P>ITEM M24: FOUND SENSE LINE ON RIGHT ENGINE UPPER AFT FIRE LOOP BROKEN, REMOVED AND REPLACED RIGHT UPPER LOOP IAW 26-11-02. OPS CHECK GOOD.</P>)

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