# SDR AT9900678

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N831AT](https://openairdocs.org/aircraft/N831AT), registered now
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47674
- System (JASC): [5321 · Fuselage Floor Panel](https://openairdocs.org/jasc/5321)
- Part: Floor
- Condition: Corroded
- Location: Bs 680-756
- 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/AT9900678

## Discrepancy

CABIN FLOOR PANEL (NR 75) HAD CORROSION AROUND THE ATTACHMENT DURING A SCHEDULED INSPECTION AT TIMCO IN LAKE CITY FL, THE HOLES.  REMOVED CORROSION AROUND FASTENER HOLES OF FLOOR PANEL NR 75.  CHECKED WITH CALIPER NR A-2542 IAW DC9 SRM 53-01 AND FOUND TO BE OUT OF LIMITS.  FABRICATED NEW FLOOR PANEL WITH 7075 T-6 .025 21 X 76 7/8 AND NEW HAT CHANNELS TREATED AND PRIMED FLOOR PANEL AND HAT CHANNELS IAW DC9 SRM 51-10-03, IAW DC9 SRM 57-10-03, IAW DC9 SRM 51-10-02 AND 53-21-0 FIG 4.

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