# SDR ASAA2019010627695

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2019
- Submitted: January 9, 2019
- Operation: Air carrier
- Aircraft: [N530AS](https://openairdocs.org/aircraft/N530AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36578
- Aircraft time: 34,337 hours, 10,160 cycles
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019010627695

## Discrepancy

AFTER ENGINE START ATTEMPTED TO PUT GEN1 ON THE BUS WE COULD NOT ESTABLISH ELECTRIC W/ GEN 1 AND SAW THE TR UNIT LIGHT WAS ILLUMINATED. GROUNDED - YES. INTERROGATED CREW FOUND EXTERNAL POWER HAD AN INTERRUPTION RESET TRU 1,2,3 C/BS AFTER SHUTTING DOWN POWER, REINITIALIZED POWER, REF AMM 24-32-11 TRU INSTALLATION TEST WITH APU POWER. TESTED GOOD ALL 3 TRU'S OPS TESTED. IDG NR 1 AND NR 2 WITH NR 1 AND NR 2 ENGINE UNDER GROUND POWER OPS TEST REF 24-11-00 LOAD TESTED GOOD, OPS TESTED GOOD.

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