# SDR CALA2026100820220

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2026
- Submitted: October 8, 2026
- Operation: Air carrier
- Aircraft: [N17432](https://openairdocs.org/aircraft/N17432), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64451
- Aircraft time: 2,342 hours, 803 cycles
- System (JASC): [2497 · Electrical Power System Wiring](https://openairdocs.org/jasc/2497)
- Part: Pin
- Condition: Loose
- Location: Nr 1 Generator
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026100820220

## Discrepancy

GEN 1 AMBER DRIVE LIGHT BURNED OUT,  ACCOMPLISHED FIM 24-11 TASK 803, STEP C: FAULT ISOLATION UP TO STEP 2(D). RELAMPED, RE-RACKED GCU1, SWAPPED GCU FOR TROUBLESHOOTING PURPOSE, GENERATOR / STBY POWER MODULE, ALL NO HELP. REINSTALLED GCU TO ORIGINAL POSITIONS. VISUALLY CHECK IDG FOR PROPER OIL LEVEL & ELECT CONNECTORS. RAM ENG NR 1 TO VERIFY,  NR 1 ENG HAS PROPER VOLTAGE AND FREQUENCY BOTH SHOWED GOOD ON OVERHEAD ELECT PANEL,  NR 1 ENG GEN WAS SELECTED ON & NR 1 ENG GEN HELD POWER.SELECTED ON & OFF WHILE RUNNING, CAME ON AND OFF WITH SWITCH SELECTION.    FOUND LOOSE WIRE ON TB502 PIN A9 RIEINSERTED LOOSE PIN.  ALL P5 -4 PANEL AC SYS PANEL P5-5 GENERATOR DRIVE PANEL LIGHTS CHECKED GOOD.

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