Service difficulty report · Hmu · Boeing 7878

Difficulty date
January 9, 2020
Submitted
January 21, 2020
Operation
Air carrier
Aircraft
N784AV
Make and model
Boeing 7878
Aircraft serial
37506
Aircraft time
16,571 hours, 2,393 cycles
Engine
Rroyce TRENT1000D
Engine time
2,984 hours, 368 cycles
Part
Hmu
Condition
Malfunctioned
Location
Engine
Part time
2,392 hours, 394 cycles
Stage of operation
AP
How discovered
O
Nature of condition
O
Precautionary procedure
E

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

What was found

DURING APPROACH SET AN ENG CONTROL MESSAGE AND SHORTLY AFTERWARDS RAN DOWN (IFSD). AIRCRAFT CONTINUED AND LANDED SAFELY. PILOT REPORT WO 15723064 " ENG EEC C1L DURING DESCENT. THIS ITEM WAS CONTROLLED BY JIC B78-72-00213 UNDER WO 102011632. A/C WAS APPROVED FOR RETURN TO SERVICE. PILOT REPORT WO 15723065 " ENG FAIL L DURING APPROACH REACHING 12000 FT APPROXIMATELY. IN ACCORDANCE WITH AMM DMC B787-A-R73-12-11-00A-520A-A AND AMM DMC B787-A-R73-21-13-00A-520A-A THE FUEL PUMP AND THE HMU WERE REMOVED. IN ACCORDANCE WITH AMM DMC-B787-A-R73-12-11-00A-520A-A THE FUEL PUMP WAS REMOVED. CONTINUE PAGE 157230-29. IN ACCORDANCE WITH AMM DMC B787-A-R73-12-11-00A-720A-A FUEL PUMP WAS INSTALLED. THIS ITEM WAS CONTROLLED BY JIC B78-72-00213 UNDER WO 102011632. A/C WAS APPROVED FOR RETURN TO SERVICE. PILOT REPORT WO 15723066 ENG CONTROL L STATUS. THIS ITEM WAS CONTROLLED BY JIC B78-72-00213 UNDER WO 102011632. & A/C WAS APPROVED FOR RETURN TO SERVICE. ISSUED TO BE ACCOMPLISHED UNDER WO 102011632. LT ENGINE REMOVAL AND INSTALLATION. IN ACCORDANCE WITH AMM DMC-B787-A-R71-00-00-44A-720A-A AND JIC-B78-72-00213 THE LH ENGINE S/N 10451 WAS INSTALLED AND OPERATIONAL TEST IN ACORDANCE WITH JIC B78-72-00213 WERE SATISFACTORY. A/C WAS APPROVED FOR RETURN TO SERVICE.

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