Service difficulty report · Transmitter · Boeing 75733N

Difficulty date
May 8, 2017
Submitted
May 8, 2017
Operation
Air carrier
Aircraft
N78866
Make and model
Boeing 75733N
Aircraft serial
32591
Aircraft time
49,503 hours, 14,573 cycles
Part
Transmitter
Condition
Faulty
Location
Nr 1 Engine
Part time
15,394 hours, 3,128 cycles
Stage of operation
CR
How discovered
O
Nature of condition
R
Precautionary procedure
A

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

What was found

AT CRUISE 34K FLIGHT LEVEL. EPR COMMAND TO 1.78 EPR ACTUAL NR1 EPR= 1.41 N1=78.7 EGT=545 N2=77 F/F=3.2, NR 2 EPR =1.74 N1=97 EGT=678 N2=89 F/F=5.7, A/T ON/OFF NO CHANGE, EEC ON/OFF NO CHANGE,ALTITUDE CHANGE TO 28K FLT NO CHANGE, NOT ABLE TO ACCELERATE NR 1 ENG. ABOVE EPR=1.41. ANY THROTTLE POSITION. EMERGENCY DECLARED. REPLACED THE FUEL FLOW GOVERNOR IAW AMM 73-21-01. REPLACED THE NR 1 ENGINE EPR TRANSMITTER IAW AMM 77-11-01-404-007-R00.

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