Service difficulty report · Wire Harness · Doug MD11F

Difficulty date
April 3, 2012
Submitted
April 9, 2012
Operation
Air carrier
Aircraft
N253UP
Make and model
Doug MD11F
Aircraft serial
48439
Part
Wire Harness
Part number
224W99305
Condition
Shorted
Location
Nr 2 Fire Loop
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

NR 2 ENGINE FIRE LEVEL 3 INDICATION AT FLAP RETRACTION. NO FAULT IN CFDS FOR B LOOP. THE LAST 4 LEGS A LOOP WAS FAULTED. RT UPPER TURBINE DH4 (SEE BOW 2021, REV 992) FOUND UPPER HARNESS FOR A LOOP INTERMITTENT. DH4 TO DH23 R & R IN REF TO 71-50-04-4. OPS CHECKED GOOD IAW 26-11-02-5. BITE TEST.

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