Service difficulty report · Drain · Boeing 7474R7F

Difficulty date
November 14, 2024
Submitted
November 15, 2024
Operation
Air carrier
Aircraft
N581UP
Make and model
Boeing 7474R7F
Aircraft serial
25866
Aircraft time
127,627 hours, 21,489 cycles
Part
Drain
Condition
Clogged
Location
Zone 100
Stage of operation
CR
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

**DIVERSION**MASTER WARNING LIGHT AND BELL COME ON INTERMITTENTLY. BUT NO EICAS MESSAGE. FOUND CLOGGED DRAIN ABOVE FIRE/SMOKE CARD FILE. CLEARED DRAIN PER AMM 51-41-01. RERACKED CARDS IN FIRE/SMOKE CARD FILE PER AMM 26-10-01. PERFORMED FIRE OVHT GROUND TEST PER AMM 26-11-00 TEST PASSED. PERFORMED SMOKE DET TEST PER AMM 26-14-00. TEST PASSED. PERFORMED MAWEA TEST PER AMM 31-52-00 TEST PASSED. ALL TEST HAVE PASSED AND NO DEFECT NOTED AT THIS TIME A/C IS OK FOR SERVICE.

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