# SDR AALA991520

- 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: Forging
- Condition: Cracking
- Location: Bs 870
- 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/AALA991520

## Discrepancy

TUL - FOUND CORROSION AND A CRACK ON THE OUTBOARD FLANGE AND INBOARD.  OUTBOARD WEB OF THE LEFT BS 870 FORGING UPPER PORTION AT SPLICES ANGLES ABOVE STRINGER 96.  INSTALLED REPAIR DOUBLER PER ESO 11697 DATED 9/29/99.  (M)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.