# SDR CALA2024081300410

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2024
- Submitted: August 13, 2024
- Operation: Air carrier
- Aircraft: [N17312](https://openairdocs.org/aircraft/N17312), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 64609
- Aircraft time: 3,989 hours, 1,412 cycles
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Adiru
- Part number: HG2050BC04
- Part serial: 56121048
- Condition: Faulty
- Location: Cockpit
- Part time: 3,970 hours, 1,407 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024081300410

## Discrepancy

IRS-R FAULT LIGHT IS ON CHECKED FAULT MASSAGE: ADIRU-R INTERNAL FAULT. ADDED PARTS USED. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1522004  SN OFF 1048  UNIT, ADIRU, AI  OFF 42-3421-9-0001 1048 ON 42-3421-9-0001 5385 REMOVED & REPLACED RT ADIRU (M1752) REF AMM 34-21-01, PERFORMED OPS TEST REF AMM 34-21-00-710-801 TESTS OK.

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