# SDR 2007UALA00577

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2007
- Submitted: March 6, 2007
- Operation: Air carrier
- Aircraft: [N401UA](https://openairdocs.org/aircraft/N401UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 435
- Aircraft time: 44,457 hours, 16,244 cycles
- Engine: Iae V2527A5
- System (JASC): [2497 · Electrical Power System Wiring](https://openairdocs.org/jasc/2497)
- Part: Wire
- Condition: Shorted
- Location: Unknown
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA00577

## Discrepancy

FOUND SHORTED WIRE BETWEEN SEC AND ACTUATOR.  [SUP 05-16-07]  FLT RTBL WITH EFCS TEST 1 FAILURE MESSAGE. EFCS FAULTED SEC 2. INITIALLY SWAPPED SEC 2 WITH SEC 3 TO DETERMINE IF FAULT WAS WITH THE SEC UNIT ITSELF. POST SWAP OPS CHECK FAILED, SO STARTED TO PERFORM RESISTANCE CHECKS ON CONNECTORS PER TSM. FOUND SEC 2 PIN 15D HAD 8 OHM RESISTANCE WITH GROUND AND TSM SPECIFIES THAT SHOULD HAVE HAD AT LEAST 100 MEGAOHM. UNWRAPPED WIRING BUNDLE FOR RT ELEVATOR OUTBOARD SERVO AND FOUND RED WIRE 5954-PF20 TO BE SHORTING UNDERNEATH THE CARGO COMPARTMENT FORWARD MOST FLOORBOARD. REPAIRED WIRE WITH ENVIRONMENTAL SPLICE.

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