# SDR HNAA2026082400745

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 23, 2026
- Submitted: August 24, 2026
- Operation: Air carrier
- Aircraft: [N939AE](https://openairdocs.org/aircraft/N939AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500923
- Aircraft time: 46,527 hours, 42,940 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Pcu
- Part number: 3603001001
- Part serial: 0960
- Condition: Illuminated
- Location: Rudder Sys
- Part time: 46,528 hours, 42,942 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2026082400745

## Discrepancy

DURING CLIMB RUDDER SYSTEM 1-2 INOPERATIVE MESSAGE ON EICAS.  R & R PRESSURE SWITCH IAW AMM 27-23-04-000/400-801-A. FOUND SYS 1 SOLENOID IN PCU MAKING BUZZING SOUND WHILE HYD SYS 1 ENGAGED. R & R PCU IAW AMM 27-22-03-000/400-801-A. OPS CHECKED GOOD. LEAK CHECKED GOOD. OK FOR SERVICE.

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