# SDR U2RA201211120003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2012
- Submitted: November 14, 2012
- Operation: Air carrier
- Aircraft: [N176CA](https://openairdocs.org/aircraft/N176CA), registered now
- Make and model: Boeing 757-28A
- Registry model: [Boeing 757-28A](https://openairdocs.org/model/boeing-757-28a) (OpenAirDocs)
- Aircraft serial: 24543
- Aircraft time: 67,065 hours, 20,179 cycles
- Engine: Rroyce RB211535E4
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Blades
- Part number: UL28556
- Part serial: GB88504
- Condition: Debonded
- Location: Nr 1 Engine
- Part time: 10,902 hours, 5,971 cycles
- Stage of operation: IN
- How discovered: U
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/U2RA201211120003

## Discrepancy

NR 1 ENGINE, NR 14 FAN BLADE FOUND TAP DISPLAY MORE THAN 600 DB AT SEC "C" OUT OF LIMITS IAW SB RB211-72-9660. GENERATED FROM TASK CARD 72-136-01-01.

---
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.