# SDR 97FDEA00409

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N143FE](https://openairdocs.org/aircraft/N143FE), registered now
- Make and model: Boeing 727-21
- Registry model: [Boeing 727-21](https://openairdocs.org/model/boeing-727-21) (OpenAirDocs)
- Aircraft serial: 19136
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 65402714
- Condition: Corroded
- Location: Bs 1010
- 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/97FDEA00409

## Discrepancy

CORROSION ON LOWER FLANGE OF FLOORBEAM BS 1010, RBL 28 TO 48, WL 200 BETWEEN STRAP AND UNDER NUTPLATES.  *S/D*  REMOVED LOWER FLANGE OF FLOORBEAM BS 1010, RBL 19 TO RBL 70.5 AND REPLACED WITH T-CHORD 7075T73511, FABRICATED 2 ANGLES FROM 15-5 PH CRESS STEEL .071, 1 STRAP FROM 15-5 PH CRESS STEEL .100, 2 RADIUS FILLS - 100 FROM 7075 T-6, 1 STRAP 7075-T6 .130.  ALL IAW EA NR 7-5310-34978 AND SRM 53-10-8 AND M/M 51-20-121 FED-EX.

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