# SDR DALA20190402084

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2019
- Submitted: April 2, 2019
- Operation: Air carrier
- Aircraft: N923DN
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53585
- Aircraft time: 49,834 hours, 33,112 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Lt Wing
- 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/DALA20190402084

## Discrepancy

REAR SPAR LOWER CHORD / BS 161 / LEFT WING / CORROSION REMOVAL PSE 57.11.02.2 - PERMANENT REPAIR ACCOMPLISHMENT. CURRENT REVISION OF ER/A 525623-14AD IS REV. C. RESULTS OF STAGE II DTE/DTA HAVE BEEN COMPLETED AND INCORPORATED AT THIS REVISION LEVEL. ACCOMPLISH SECTION IV: PERMANENT REPAIR : REMOVED TANK PLATES 520CB & 520DT REF. MD90AMM 28-00-00(426619) INSTALLED TANK PLATES 520CB & 520DT REF. MD90AMM 28-00-00 PERFORMED LEAK CHECK. NO LEAKS NOTED REF. MD90AMM 28-00-00 (933739) C/W ERA 525623-14AD REV D SECTION IV. NO DEFECTS NOTED. (LP#0972552)

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