# SDR CALA2026022614078

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2026
- Submitted: February 26, 2026
- Operation: Air carrier
- Aircraft: [N37274](https://openairdocs.org/aircraft/N37274), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31592
- Aircraft time: 74,267 hours, 26,614 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Part number: 849589
- Part serial: MX847899
- Condition: Damaged
- Location: Zone 400
- Part time: 8,116 hours, 3,732 cycles
- 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/CALA2026022614078

## Discrepancy

LOST NR 1 ENG, HYD SYS IN FLT.   PILOTS REPORTED NR 1 ENG  EDP & ELEC PUMP LIGHTS ILLUMINATED DURING FLT.  THE EDP REMAINED ILLUMINATED WHILE  ELEC LIGHT SWITCHED OFF.  PRESSURIZED HYD SYS -A- IAW FIM 29-30 TASK 812. CONDUCTED NR 1 ENG DRY MOTOR PROCEDURE IAW AMM 71-00-00-700-821-F00.   NOTICED HYD SYS -A- PRESSURE REMAINING INOPERATIVE.  DETERMINED NR 1 ENG EDP TO BE INOPERATIVE. FOLLOWED FIM 29-30 TASK 812.  FOUND PRESSURE LINE AT PYLON PULLED OUT. INSPECTED LINE & NIPPLE. FOUND TOP TOOTH SHEARED OFF ON NIPPLE & PRESSURE LINE SEPARATED FROM INSIDE THREADS.   REMOVED THE PRESSURE LINE.   CONNECTED HOSE TO EDP & INSTALLED LOWER TWO CLAMPS. ONCE NEW NIPPLE IS INSTALLED IAW CMM 72-30-01 & AMM 70-20-02-400-801-F00.   INSPECTED AND REPLACED EDP CASE DRAIN FILTER AS A PRECAUTION. NO DEBRIS FOUND. R & R FILTER,  REMOVED PRESSURE HYD LINE NIPPLE FITTING IAW AMM 54-51-01

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