SDR SWAA2014031025869

Service difficulty report · Wire Harness · Boeing 7377H4

Difficulty date: March 6, 2014
Submitted: March 10, 2014
Operation: Air carrier
Aircraft: N230WN
Make and model: Boeing 7377H4
Aircraft serial: 34592
Aircraft time: 29,026 hours, 17,059 cycles
Engine: Ge CFM567B24
System (JASC): 2197 · Air Conditioning System Wiring
Part: Wire Harness
Part number: 715W5813509
Condition: Shorted
Location: Cabin Pressure
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

DECLARED EMERGENCY, PRESSURIZATION EVENT CRUISING AT FL 400. STARTED CRUISE DESCENT AT 1000' PER MIN, AT FL 380. CABIN ALTITUDE CLIMBING +2000' PER MIN, CABIN ALT INDICATED 8500', AT FL 360. CABIN ALTITUDE SLOWLY CLIMBED ABOVE 10,000', ACTIVATION OF CABIN ALTITUDE WARNING HORN. R & R HARNESS ASSEMBLY IAW MM.

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