SDR FDEA201503070706

Service difficulty report · Relay · Doug MD11F

Difficulty date: March 7, 2015
Submitted: March 9, 2015
Operation: Air carrier
Aircraft: N584FE
Make and model: Doug MD11F
Aircraft serial: 48436
Aircraft time: 751 hours, 16,395 cycles
System (JASC): 2421 · AC Generator-Alternator
Part: Relay
Condition: Faulty
Location: Electrical Sys
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

LEVEL 1 EMER POWER ON, CYCLED EMER POWER SWITCH TO OFF & BACK TO ARM, NO HELP. ADG TO PREVENT BATTERY FROM DISCHARGING. WHEN EMER POWER SWITCH OFF, HAD LT EMER DC LIGHT. STOWED THE ADG IAW AMM 24-25-01-2. REPLACED RELAY R2-5411 & R2-5157. EMER POWER TESTED OK. NO HISTORY FOR 30 DAYS.

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