# SDR 99ZZZX2045

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Duncan Aviation Inc, repair station JGVR194F](https://openairdocs.org/faa-repair-station/JGVR194F/duncan-aviation-inc.md) (OpenAirDocs)
- Aircraft: N15TW
- Make and model: Amd FALCON50MYST
- Aircraft serial: 073
- System (JASC): [5610 · Flight Compartment Windows](https://openairdocs.org/jasc/5610)
- Part: Frame
- Part number: F50B261001110
- Condition: Corroded
- Location: Windshield
- Part time: 6,302 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/99ZZZX2045

## Discrepancy

AFTER REMOVAL OF CENTER COCKPIT WINDSHIELD, PN MY20261-10-4, WHICH WAS BEING REPLACED DUE TO EDGE DELAMINATION BY CUSTOMER REQUEST (NOTE:  EDGE DELAMINATION WAS WITHIN LIMITS PER MANUFACTURER'S MM), LOWER WINDSHIELD SEAL AREA OF FRAME HAD SEVERE INTERGRANULAR CORROSION CAUSING EDGE OF FRAME TO FLAKE.  WHILE BLENDING OUT CORROSION, TRAILS, BLENDING PROTRUDED THROUGH FRAME AT LOWER SEAL AREA RADIUS TO UNPRESSURIZED SIDE OF FRAME.  (APPROXIMATELY 1 INCH LONG HOLE).  ALSO, SEVERAL OTHER AREAS OF CORROSION BLENDED THROUGH APPROXIMATELY 50 PERCENT TO 65 PERCENT OF MATERIAL THICKNESS.  CORROSION CANNOT BE VISUALLY SEEN WITHOUT REMOVAL OF WINDSHIELD.

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