SDR UPS07550454

Service difficulty report · Controller · Boeing 75724APF

Difficulty date: August 17, 2007
Submitted: August 20, 2007
Operation: Air carrier
Aircraft: N402UP
Make and model: Boeing 75724APF
Aircraft serial: 23724
System (JASC): 2131 · Cabin Pressure Controller
Part: Controller
Condition: Malfunctioned
Location: Cabin Pressure
Stage of operation: DE
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

INSPECTION TYPE:N/A CRUISING AT FL370 WITH LEFT PACK OFF AND RIGHT PACK ON, PRESSURIZATION AUTO CONTROLLER WAS IN AUTO 2 WITH DESTINATION SET AT 10 FT. ON INITIAL DESCENT PASSING THROUGH FL330, THE CABIN ATLITUDE EICAS WARNING LIGHTS CAME ON AND INDICATED 10,000 FT. REMOVED AND REPLACED # W AUTO PRESS CONTROLLER AS PRECAUTION, BITE CHECKS GOOD. CLOSED ON M356854.

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