# SDR FDEA201909062113

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2019
- Submitted: September 9, 2019
- Operation: Air carrier
- Aircraft: [N590FE](https://openairdocs.org/aircraft/N590FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48505
- Aircraft time: 86,758 hours, 20,036 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Relay
- Part number: B499
- Condition: Faulty
- Location: Ac System
- Stage of operation: CR
- 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/FDEA201909062113

## Discrepancy

TEST FLIGHT - WHEN CHECKING THE ADG, YOU PULL L EMER AC BUS C/B (UPPER MAIN B-14) TRIPPING THE EMER PWR SWITCH FROM ARM TO ON. DOES NOT AUTOMATICALLY SWITCH TO ON. CAPT LOSES HIS 3 DISPLAY. YOU CAN SELECT EMER PWR SWITCH TO ON & REPOWERS CAPT'S DISPLAYS. LEFT EMERGENCY CONTROL RELAY R2-17 REMOVED AND REPLACED AS PER AMM 24-2400-4. TEST OF THE LEFT EMERGENCY CONTROL RELAY CARRIED OUT AS PER AMM 24-24-0-700-802 SATISFACTORY. ADG DEPLOYED AND STOWED AS PER AMM 24-25-01. ADG ADJUSTMENT/TEST CARRIED OUT AS PER AMM 24-25-00-5 SATISFACTORY.

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