SDR DLM88081375

Service difficulty report · Relay · Doug MD88

Difficulty date: October 18, 2008
Submitted: October 23, 2008
Operation: Air carrier
Aircraft: N949DL
Make and model: Doug MD88
Aircraft serial: 49880
Aircraft time: 49,880 hours, 38,278 cycles
System (JASC): 2450 · AC Power Distribution System
Part: Relay
Condition: Failed
Location: Electrical
Stage of operation: TX
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

DUE TO LONG HISTORY OF BREAKERS POPPING AND SOME ELECTRICAL ODOR IN CABIN, WE LOOKED FOR AND FOUND CONNECTORS AND CURRENT LIMITERS ON THE T1,T2,AND T3 SIDE OF THE AC BUSS TIE RELAY WITH SEVERE HEAT DAMAGE. REPLACED AC BUSS TIE RELAY TWO FEEDER WIRES AND CURRENT LIMITERS ON THE T1,T2 AND T3 SIDE. POWER CHECKS GOOD IN ALL MODES.

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