# SDR AALA202504226310

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2025
- Submitted: April 22, 2025
- Operation: Air carrier
- Aircraft: [N300UB](https://openairdocs.org/aircraft/N300UB), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 44506
- Aircraft time: 591 hours, 227 cycles
- System (JASC): [2760 · Drag Control System](https://openairdocs.org/jasc/2760)
- Part: Control Unit
- Part number: 115E6352G3
- Part serial: F01629
- Condition: Faulty
- Location: Zone 100
- Part time: 2,802 hours, 1,033 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202504226310

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING FLIGHT AT CRUISE AT FL 210 USING ALL AUTOMATION CONTROL, WHILE REDUCING SPEED THE AUTO THROTTLE REDUCES THE POWER THEN THE GEAR HORN GOES OFF AND THE 3 GEAR RED LIGHTS COME ON.  REMOVED AND REPLACED SPOILER CONTROL UNIT (AALA202504176310), PER AMM 27-61-45. ACCOMPLISHED PSEU CHECK AND TEST PER AMM 32-09-10. ACCOMPLISHED LMP TEST PER GPM 16-10. ACCOMPLISHED TSI MIC 0113390. ALL TEST PASSED. REMOVED AND REPLACED PSEU (AALA202504226211), PER AMM 27-61-45. ALL TEST PASSED.

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