# SDR T17A20200811043

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2020
- Submitted: November 23, 2020
- Operation: Air carrier
- Aircraft: [N477TM](https://openairdocs.org/aircraft/N477TM), registered now
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK519
- Aircraft time: 5,919 hours, 4,558 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 45A33606005
- Condition: Cracked
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/T17A20200811043

## Discrepancy

ALL THREE STIFFENERS UNDER THRESHOLD FLOOR PANEL CRACKED.   REMOVED AND REPLACED STIFFENERS (2 EA) 45A33606-005 AND (1 EA) 45A33606-006, IAW SRM 51-41-00.

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