SDR WRNA200800007

Service difficulty report · Connector · Boeing 7472U3B

Difficulty date: March 15, 2008
Submitted: March 25, 2008
Operation: Air carrier
Aircraft: N923FT
Make and model: Boeing 7472U3B
Aircraft serial: 22769
Aircraft time: 84,045 hours, 20,537 cycles
System (JASC): 2197 · Air Conditioning System Wiring
Part: Connector
Condition: Dirty
Location: Nr 1 Pack
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: A

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

What was found

AFTER TAKEOFF FROM MIA, NR 1 PACK INOP, UNABLE TO MAINTAIN PRESSURIZATION WITH NR 3 PACK. RETURNED TO FIELD FOR A SAFE LANDING. WHILE TROUBLESHOOTING, FOUND CONNECTOR FOR NR 1 PACK DIRTY, CLEANED AND REINSTALLED CONNECTOR IAW 747 MM 21-51-01 PAGE 401. OPS CHECKED GOOD IAW 747 MM 21-51-01 PAGE 404. A/C RELEASED TO SERVICE.

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