SDR UIEA2015090700469

Service difficulty report · Controller · Boeing 74747UF

Difficulty date: September 6, 2015
Submitted: September 8, 2015
Operation: Air carrier
Aircraft: N497MC
Make and model: Boeing 74747UF
Aircraft serial: 29258
Aircraft time: 67,476 hours, 10,808 cycles
System (JASC): 2131 · Cabin Pressure Controller
Part: Controller
Part number: 7968842007
Part serial: C92039009
Condition: Malfunctioned
Location: Cabin Pressure
Part time: 37,313 hours, 6,287 cycles
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

REFERENCE SDR DOCUMENT UIEA2015090700467 & EICAS MSG, CABIN ALT AUTO, CABIN ALT AUTO B, & CABIN ALT AUTO A, AT FL 320, 3 HOURS INTO CRUISE, DIVERTED. R & R CABIN PRESS CONTROLLER B IAW AMM 21-31-02 401. OPERATIONS CHECKED GOOD IAW SAME AMM REFERENCE.

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