# SDR CALA2026060116714

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2026
- Submitted: June 1, 2026
- Operation: Air carrier
- Aircraft: [N64844](https://openairdocs.org/aircraft/N64844), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 42184
- Aircraft time: 34,542 hours, 12,735 cycles
- System (JASC): [2997 · Hydraulic Power System Wiring](https://openairdocs.org/jasc/2997)
- Part: Elec Connector
- Part number: BACC63CB18A8SN
- Condition: Faulted
- Location: Zone 100
- Stage of operation: CR
- 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/CALA2026060116714

## Discrepancy

ELEC HYD PUMP A OVERHEAT INFLIGHT ON DEPARTURE REMOVED AND REPLACED HYDRAULIC SYSTEMS A ELECTRIC MOTOR-DRIVEN PUMP (EMDP) ACOUSTIC FILTER IN REF TO AMM 29-11-27. REMOVED AND REPLACED ELECTRIC MOTOR-DRIVEN PUMP (EMDP) SYS A IN REF TO AMM 29-11-21.  REMOVED AND REPLACED SYS A CASE DRAIN FILTER IN REF TO AMM 29-11-51. NO DEBRI FOUND. PERFORMED OPS CHECK OF THE EMDP IN REF TO AMM 29-11-21-860-007-001. NO HELP, OVERHEAT LIGHT STILL DISPLAYED ALSO SLAVED IN NEW SERVICEABLE OVERHEAT SWITCH (S798), NO HELP. WHEN SYSTEM A ELECTRIC 2 SWITCH ON OVERHEAT LIGHT SWITCH COMES ON RIGHT AWAY. RECONNECTED OVERHEAT SWITCH TO ORIGINAL SWITCH. NEEDS MORE TROUBLE SHOOTING REF FIM 29-30 TASK 806. SLAVED IN NEW HYDRUALIC CONTROL PANEL REF AMM 29-11-91, NO HELP. CHECKED FOR SHORT TO GROUND FROM PIN 6 OF D642 TO PIN B OF D2688 AND FOUND NO SHORT. REMOVED CONNECTOR D2664 FROM ELC HYD PUMP A AND FOUND INSULATION OF PLUG DETERIORATED. REPLACED CONNECTOR D2664 REF SWPM 20-61-11. OPS CHECK GOOD. OVERHEAT LIGHT NO LONGER ILLUMINATES WITH ELC HYD PUMP A ON.

---
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.