SDR UALA2009111803588

Service difficulty report · Switch · Airbus A320232

Difficulty date: November 17, 2009
Submitted: November 18, 2009
Operation: Air carrier
Aircraft: N440UA
Make and model: Airbus A320232
Aircraft serial: 702
Aircraft time: 41,524 hours, 16,286 cycles
Engine: Iae V2527A5
System (JASC): 3440 · Independent Position Determining System
Part: Switch
Condition: Malfunctioned
Location: Cockpit
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

LOST ADR1, FLIGHT DIVERTED. ALL INSTRUMENTS NORMAL UNTIL POWER UP. LOST ADR1...NAV. ADR 1 FAULT DISCOVERED ADR 1 SWITCH. HAS NO DETENT POSITION. SUSPECT SWITCH CAME OUT OF NAV POS ON ITS OWN. REPLACED ADIRU PANEL, ACCOMP CFDS ADIRU INTERFACE TEST. A/C OKAY FOR SVC.

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