# SDR UIEA200200029

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2002
- Submitted: August 14, 2002
- Operation: Air carrier
- Aircraft: N526MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 22337
- Aircraft time: 80,028 hours, 16,287 cycles
- System (JASC): [5411 · Nacelle/Pylon, Frame/Spar/Rib](https://openairdocs.org/jasc/5411)
- Part: Tee Chord
- Part number: 65B941071
- Condition: Cracked
- Part time: 80,028 hours, 16,287 cycles
- 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/UIEA200200029

## Discrepancy

Internal inspection of #4 pylon found aft horizontial flange of R/H Tee Chord cracked at NC 270 Bulkhead in area of upper link fitting.  Crack is located at the end fastener hole.

---
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.