# SDR DL72S972574

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N401DA
- Make and model: Boeing 727232
- Aircraft serial: 21145
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Light Box
- Condition: Corroded
- Location: Bs 720
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL72S972574

## Discrepancy

LIGHT BOX CORRODED AROUND EDGES STA 720B AND 720C BETWEEN STRINGERS 16R TO 14R.  REMOVED LIGHT BOX.  REMOVED CORROSION PER SRM 51-10-6 NOT WITHIN ALLOWABLE LIMITS PER SRM 53-30-1 FIG 7.  COMPLETED DRILLING DOUBLER PER SRM 53-30-3 FIG 22.  INSTALLED DOUBLER PER SRM 53-30-3 FIG 22.  LIGHT BOX PER SRM 53-30-3.

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