# SDR HALA2011042400169

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2011
- Submitted: April 26, 2011
- Operation: Air carrier
- Aircraft: [N581HA](https://openairdocs.org/aircraft/N581HA), registered now
- Make and model: Boeing 767-33A
- Registry model: [Boeing 767-33A](https://openairdocs.org/model/boeing-767-33a) (OpenAirDocs)
- Aircraft serial: 28141
- Aircraft time: 35,407 hours, 6,676 cycles
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Indicator
- Part number: HG150AKM1
- Part serial: 5399
- Condition: Slow
- Location: Attitude
- Part time: 10,561 hours, 1,888 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HALA2011042400169

## Discrepancy

ETOPS SIGNIFICANT SYS - IN LEVEL FLIGHT (2.5 ANU), THE STANDBY ATTITUDE INDICATOR SLOWLY PRECESSES - 20 DEG RT BANK/10 DEG ANU AT THIS TIME.  INSTRUMENT IS ILLUMINATED.  NO FLAGS, CAGED IT AND IT HAPPENED AGAIN.  REPLACED STBY ATT INDICATOR OPS CHECK OK IAW MM 34-25-01.

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