Narrative:

Aircraft equipped with penny & guiles engine instruments and are very sensitive to RPM (N1) and egt exceedances at high altitude (8355 ft) and high gross weights (309.7 kilos). When workload permitted, we checked the afm and found that exceedances were such that just a reduction of power to reduce exceedances and continue flight!

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Original NASA ASRS Text

Title: A B747-200 RPTS N1 INDICATORS AND EGT INDICATORS OVERLY SENSITIVE TO ACFT GROSS WT AND HIGH FIELD ELEVATION.

Narrative: ACFT EQUIPPED WITH PENNY & GUILES ENG INSTS AND ARE VERY SENSITIVE TO RPM (N1) AND EGT EXCEEDANCES AT HIGH ALT (8355 FT) AND HIGH GROSS WTS (309.7 KILOS). WHEN WORKLOAD PERMITTED, WE CHKED THE AFM AND FOUND THAT EXCEEDANCES WERE SUCH THAT JUST A REDUCTION OF PWR TO REDUCE EXCEEDANCES AND CONTINUE FLT!

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.