# SDR CA970820015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Cessna 550
- Registry model: [Cessna 550](https://openairdocs.org/model/cessna-550) (OpenAirDocs)
- Engine: Pwa JT15D4
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 55120106
- Condition: Cracked
- Location: Fs 456.5
- Part time: 2,410 hours
- 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/CA970820015

## Discrepancy

(CAN) WHILE REPLACING DORSAL FIN PER SB 550-53-24, A 2" CRACK WAS FOUND IN THE R/H SKIN ABOUT HALF WAY BETWEEN THE FRESH AIR DUCT FLANGE AND THE FRAME AT FS456.50 TRAVELLING CIRCUMFERENTIALLY FROM THE TOP EDGE TOWARDS THE R/H SIDE. AREA IS BEING REPAIRED BY INSERTING A PATCH AND OVERLYING A DOUBLER. ASSB 856-0047 REPAIR TO FUSELAGE SKIN UNDER DORSAL FIN AT FS 456.50.

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