# SDR NACA2025081000002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2025
- Submitted: August 15, 2025
- Operation: Air carrier
- Aircraft: [N405YK](https://openairdocs.org/aircraft/N405YK), registered now
- Make and model: Boeing 737436
- Aircraft serial: 25267
- Aircraft time: 62,371 hours, 47,080 cycles
- System (JASC): [3441 · Inertial Guidance System](https://openairdocs.org/jasc/3441)
- Part: Iru
- Part number: HG1050AD15
- Part serial: 160201
- Condition: Failed
- Location: Nr 1
- Part time: 1 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA2025081000002

## Discrepancy

NUMBER 1 IRU FAULT ILLUMINATED, IRU FAILED. REMOVED AND REPLACED NR 1 IRU IAW AMM 34-28-31, OPS CHECK GOOD.

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