SDR UIEA200700260

Service difficulty report · Unknown · Boeing 7472D7B

Difficulty date: July 8, 2007
Submitted: July 12, 2007
Operation: Air carrier
Aircraft: N528MC
Make and model: Boeing 7472D7B
Aircraft serial: 22472
Aircraft time: 80,389 hours, 16,014 cycles
System (JASC): 2120 · Air Distribution System
Part: Unknown
Condition: Odor
Location: Cockpit
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

AT DEPARTURE SMOKE AND BURNING ODOR IN COCKPIT, ELECTRICAL ODOR. PULLED C/BS FOR T/R UNITS, SMOKE AND ODOR STOPPED. WIRE BUNDLES AND AREA BELOW F/E PANEL (4) INSPECTED NO SIGN OF SHORTING OR CHAFING FOUND. PULLED T/R UNITS, PULLED AND INSPECTED FOUND NR 1 T/R UNIT VERY HOT AND WITH BURNED ODOR. NR 1 T/R TRANSFERRED TO DMI M07-134 IAW MEL 24-8. DDPG MAINT STEPS C/W ALL TEST PASS.

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