# SDR AALA991536

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N720AA](https://openairdocs.org/aircraft/N720AA), registered now
- Make and model: Boeing 727227
- Aircraft serial: 20613
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Doubler
- Condition: Corroded
- Location: Bs 1166-1183
- 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/AALA991536

## Discrepancy

TUL - EXFOLIATED CORROSION ON INTERNAL SKIN DOUBLER STR 22L, STA 1166 - STA 1183.  INSTALLED DOUBLER REPAIR PER SRM 53-30-2, FIG 3A, AARD 51-20-01-5.  TST:  73,038 HOURS.  CYCLES:  48,641.  (X)

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