# SDR O9IR2018071000001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2018
- Submitted: July 11, 2018
- Operation: General aviation
- Filed by: [Aero Air LLC, repair station O9IR003Y](https://openairdocs.org/faa-repair-station/O9IR003Y/aero-air-llc.md) (OpenAirDocs)
- Aircraft: [N293EA](https://openairdocs.org/aircraft/N293EA), registered now
- Make and model: Doug DC-9-87
- Registry model: [Doug DC-9-87](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87) (OpenAirDocs)
- Aircraft serial: 53209
- Aircraft time: 36,192 hours, 29,560 cycles
- Engine: Pwa JT8D219
- System (JASC): [2497 · Electrical Power System Wiring](https://openairdocs.org/jasc/2497)
- Part: Wire Harness
- Condition: Chafed
- Part time: 424 hours, 567 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/O9IR2018071000001

## Discrepancy

ON DEPARTURE,  THE COPILOTS PANEL WENT DARK, NO INFORMATION DISPLAYED.  LEFT GENERATOR HAD FAILED AND A NUMBER 17 OF CIRCUIT BREAKERS TRIPPED. PILOTS REFERRED TO QRH AND RETURNED TO DEPARTURE SAFELY.   DURING THE INSTALLATION OF STC STC02507LA , FAILED TO ACCOUNT FOR CLEARANCE BETWEEN UPPER TANK SYSTEM AND EXISTING AIRCRAFT WIRING BUNDLE, OVER THE COURSE OF THE LAST 567 CYCLES (SINCE INSTALLATION)CHAFING OCCURRED TO A POINT WHERE ON 07/09/2019 A SELECTION OF 8 GAUGE WIRES THAT INCLUDE A/C FLOW CONTROL VALVE, A/C REGULATOR VALVE L&R, PRIMARY TRIM MOTOR HEATER, RAM AIR VALVE, L/H ENG IGN, R/H ENG IGN, R/H FUEL FLOW, R/H ENG ANTI ICE COWL, APU DOOR CONTROL, R&L HEAT EXCHANGERS, PHASE A&C  GROUNDED OUT AND CAUSED A PARTIAL ELECTRICAL FAILURE. SOME ODOR WAS NOTED AFTER LANDING AND CHARRED WIRE BUNDLE NOTED.

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