SDR NOCA19206

Service difficulty report · Computer · Boeing 75728A

Difficulty date: November 1, 2006
Submitted: November 10, 2006
Operation: Air carrier
Aircraft: N752NA
Make and model: Boeing 75728A
Aircraft serial: 28174
System (JASC): 7711 · Engine Pressure Ratio (EPR)
Part: Computer
Part number: 948E416G1
Part serial: 99C2149
Condition: Malfunctioned
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

LEFT COMMAND EPR SECTOR CONSTANTLY IN VIEW, ACTUAL EPR NEVER CAUGHT UP TO COMMAND THRUST LEVEL. N1, N2, N3 EICAS INDICATIONS AND STANDBY N1 INDICATIONS OPS NORMAL. REPLACED THE THRUST MANAGEMENT COMPUTER PERFORMED ENGINE RUN, OPS CHECKED NORMAL.

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