SDR 2012F00121

Service difficulty report · Relay · Doug DC983

Difficulty date: July 2, 2012
Submitted: July 3, 2012
Operation: Air carrier
Aircraft: N120MN
Make and model: Doug DC983
Aircraft serial: 53120
Aircraft time: 39,573 hours, 40,878 cycles
Engine: Pwa JT8D219
System (JASC): 2150 · Cabin Cooling System
Part: Relay
Condition: Malfunctioned
Location: Lt A/C
Stage of operation: TX
How discovered: O
Nature of condition: H
Precautionary procedure: D

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

What was found

LEFT AC FAILED TO POWER AFTER ENGINE START, FAILED INSTRUMENTS AND INDICATIONS ON CAPTAIN FMA, LEFT ENGINE PARAMETERS AND PFD , AC CROSSTIE NOTED BUT FAILED TO RESET. MX PERFORMED THE FOLLOWING: RESET AC CROSSTIE RELAY IAW AMM 71-00-00, C/W AC CROSS TIE. OPS CHECK AND GENERATOR LOADS CHECK IAW AMM 24-20-06, OPS CHECKED NORMAL.

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