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SDR TWAA0007102

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Service difficulty report · Generator · Boeing 727231

FAA SDR system

Difficulty date
May 7, 2000
Submitted
May 8, 2000
Operation
Air carrier
Aircraft
N54350
Make and model
Boeing 727231
Aircraft serial
21969
Aircraft time
49,764 hours, 32,637 cycles
System (JASC)
2420 · AC Generation System
Part
Generator
Part number
SEETEXT
Condition
Failed
Location
Electrical
Stage of operation
DE
How discovered
V
Nature of condition
H, J
Precautionary procedure
O

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

What was found

IN DESCENT WITH NUMBER 3 ENGINE GENERATOR PLACARD INOPERATIVE PER MEL, EXPERIENCED AC POWER LOSS WHEN NUMBER 1 AND 2 GENERATORS HAD UNDEREXCITATION AND UNDERVOLTAGE. HAPPENED AT THE SAME TIME THAT NUMBER 2 ''B'' HYD PUMP WAS TURNED ON. FIELD RESET ON NUMBER 2 GENERATOR. FLIGHT WAS COMPLETED USING NUMBER 2 GENERATOR. NUMBER 1 GENERATOR (P/N 976J498-1), AND CSD (P/N 100842A) WERE REPLACED. NUMBER 3 ENGINE CSD WAS ALSO REPLACED. CHECK-C 1-7-00 MCI.