# SDR CALA2024093000715

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 26, 2024
- Submitted: September 30, 2024
- Operation: Air carrier
- Aircraft: [N57857](https://openairdocs.org/aircraft/N57857), registered now
- Make and model: Boeing 757324
- Aircraft serial: 32816
- Aircraft time: 60,041 hours, 19,162 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Switch
- Part number: 1122364
- Condition: Faulty
- Location: Nr 1 Engine
- Stage of operation: CR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024093000715

## Discrepancy

LEFT ENG HYD OVERHEAT LIGHT WITH PUMP SWITCHED OFF. WAS STARTING FIM 29-11 FAULT TREE 812, BUT WAS STIFFLED BY LADDERS AT GATE NOT REACHING THE LOCATION. MOVE TEAM ARRIVED SO FIM PROCESS UNTOUCHED. ACCOMPLISHED FIM 29-11 TASK 812. COULD NOT DUPLICATE ILLUMINATION OF #1 ENG HYD PUMP OVERHEAT LIGHT. VERIFIED LIGHT COMES ON WHEN JUMPING S100006 POSITION 1 TO 2. SHOOK WIRE BUNDLE NEAR SWITCH: CIRCUIT NOT EFFECTED. RAN ENGINE FOR 10 MINUTES AND MOVED FLIGHT CONTROLS, OVERHEAT LIGHT DID NOT ILLUMINATE. S100006 IS IN AREA. LOCKED OUT #1 REVERSER IN PREP FOR SWITCH REPLACEMENT. NEED HYDRAULICS DEPRESSURIZED. REF AMM 29-11-17-004-001 REMOVED AND REPLACED E1 EDP TEMPERATURE SWITCH REF AMM 29-32-01-424-009. OPS CHECK LEAK TEST GOOD.

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