Service difficulty report · Eec · Boeing 7673CB

Difficulty date
November 5, 2017
Submitted
November 6, 2017
Operation
Air carrier
Aircraft
N588HA
Make and model
Boeing 7673CB
Aircraft serial
33466
Aircraft time
55,908 hours, 10,192 cycles
Engine
Pwa PW4060
Part
Eec
Part number
7911004111
Part serial
40002826
Condition
Malfunctioned
Location
Rt Engine
Part time
8,244 hours, 1,637 cycles
Stage of operation
CR
How discovered
O
Nature of condition
R
Precautionary procedure
K

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

What was found

AFTER 3 MINUTES AT CRUISE, 11,000' MSL. RT ENGINE HAD APPROX 5 SURGES WITH ASSOCIATED HPSOV CYCLING, WHEN ADDITIONAL THRUST APPLIED, DUE TO LOSS OF AIRSPEED. RT ENGINE UNABLE TO ACHIEVE MORE THAN 2,600 LBS FUEL FLOW, NO EPR/N1/N2 RESPONSE. AFTER APPROX 30 SECONDS, RT ENGINE OPERATED NORMALLY. ACCOMPLISHED FIM 73-21 FAULT TREE 804. PIMU BITE GAVE "EEC CHB REVERSER RNG FAIL, EEC CHA/B REVR CR-CK FAIL, AND EEC CH-B FAULT CAT2. ACCOMPLISHED FIM 71-01, 71-01 809, 71-01 848, AND 71-01 864. SIM BOX PROC GAVE PROBLEM WITH LVDT. PERFORMED RESISTANCE CHECK FROM T/R LVTD TO EEC WIRING HARNESS. RESISTANCE CHECK GOOD, PER FIM 71-01 864. REMOVED AND REPLACED #2 ENG EEC PER AMM 73-21-04, OPS CHECK GOOD.

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