# SDR MK1Y20220429008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2022
- Submitted: April 29, 2022
- Operation: General aviation
- Filed by: [Bedek Aviation Group, repair station MK1Y325K](https://openairdocs.org/faa-repair-station/MK1Y325K/bedek-aviation-group.md) (OpenAirDocs)
- Aircraft: [N391CM](https://openairdocs.org/aircraft/N391CM), registered now
- Make and model: Boeing 767323
- Aircraft serial: 32975
- Aircraft time: 51,520 hours, 21,336 cycles
- System (JASC): [5700 · Wing Structure](https://openairdocs.org/jasc/5700)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: V
- Nature of condition: Z
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MK1Y20220429008

## Discrepancy

L/H WING, OUTBD TRAILING EDGE FLAP (P/N: 113T3100-95G, S/N: 000251): DURING MAINTENANCE INSPECTION AT IAI, AN UNDOCUMENTED REPAIR WITH LIGHT CORROSION WAS FOUND ON THE LOWER SKIN PANEL OF THE FLAP AT APPROXIMATELY OTEF 300.88. AFTER THE REPAIR WAS DIMANTLED, A BLEND OUT WAS FOUND ON THE LOWER SKIN PANEL AND ITS MINIMUM REMAINING THICKNESS WAS FOUND 0.092” (0.008”, 8% REMOVED). SEE RFTA 02815-0225 FOR THICKNESS GRID PERFORMED BY NDT. BLEND OUT SIZE: 8” X 1.5”.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.