Service difficulty report · Fire Loop · Doug MD11F

Difficulty date
April 7, 2021
Submitted
April 8, 2021
Operation
Air carrier
Aircraft
N612FE
Make and model
Doug MD11F
Aircraft serial
48605
Aircraft time
85,271 hours, 20,965 cycles
Part
Fire Loop
Part number
355333255
Condition
Shorted
Location
N/A
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

ON TAKEOFF PASSING 3000 FT, MOMENTARY LEVEL 3 MANF 3 FAIL ALERT FOR ABOUT 3 SECONDS ALERT WENT AWAY AND #2 BLEED VALVE CLOSED. REF WDM 36-23-02 PG 1 SH 1, REMOVED MFC REF AMM 36-23-01-4. CONTINUITY CHECKED GOOD AT R5-1054A BETWEEN PINS 5C AND 6C. FROM ANY OF THOSE PINS, FOUND A 1.5K OHMS SHORT TO GROUND. ISOLATED D1-125 AND SHORT WENT AWAY. REPLACED D1-125 REF AMM 36-23-07-4. INSTALLED MFC REF AMM 36-23-01-4. ALL TEST PASS.

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