# SDR AALA202507313384

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2025
- Submitted: July 31, 2025
- Operation: Air carrier
- Aircraft: [N815NN](https://openairdocs.org/aircraft/N815NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33208
- Aircraft time: 45,533 hours, 19,148 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hose
- Condition: Low Pressure
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202507313384

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ON TAKEOFF WITH GEAR RETRACTION, MASTER CAUTION HYDRAULIC ILLUMINATED. SYSTEM-A ENGINE 1 LOW PRESSURE ILLUMINATED. SYSTEM-A ELECTRIC NUMBER 2 LOW PRESSURE ILLUMINATED. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT IAD. PERFORMED FIM TASK 29-30-00-810-812. REMOVE AND REPLACED PRESSURE HOSE (AALA202507316372), SUPPLY HOSE (AALA202507310712), UPPER (AALA202507313384) AND LOWER (AALA202507316684) HYDRAULIC CASE RETURN HOSES. PER AMM 29-11-11, AMM 29-11-61, AMM 20-10-52 AND AMM 20-10-52 ON ENGINE NUMBER 1. LEAK CHECK GOOD. ACCOMPLISHED HYDRAULIC SYSTEM-A AND B-SYSTEM TEST, PER AMM 29-11-00. ALL TEST PASSED.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.