Service difficulty report · Sensing Element · Boeing 747481

Difficulty date
May 3, 2019
Submitted
May 3, 2019
Operation
Air carrier
Aircraft
N263SG
Make and model
Boeing 747481
Aircraft serial
29263
Aircraft time
52,356 hours, 6,412 cycles
Part
Sensing Element
Part number
356412400
Condition
Faulty
Location
Fire Warning
Stage of operation
IN
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

FOUND EICAS MSG "FIRE WHEEL WELL" DISPLAYED. (<P>PERFORMED WIRING CHECK IAW FIM 26-17 TASK 807 REV.95 AND FOUND SENSING ELEMENT M691A, M692A, M692B, M691B, M694A, M694B RESISTANCE LOW. REPLACED SENSING ELEMENT IAW AMM 26-17-02-004-001, 26-17-02-404-012 REV. 95 AND WDM 26-17-11 REV.44. PERFORMED OPERATIONAL TEST IAW AMM 26-17-00-705-001 REV. 93 AND THE RESULT WAS SATISFACTORY. </P>)