# SDR CA001020009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2000
- Submitted: January 22, 2001
- Operation: General aviation
- Engine: Rroyce RB211535E4
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Drum
- Part number: UL16758
- Condition: Cracked
- Location: Compressor
- Part time: 38,465 hours, 1,664 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/CA001020009

## Discrepancy

(CAN) INTERMEDIATE PRESSURE COMPRESSOR ROTOR DRUM P/N UL16758 S/N 36651 EX ESN 30534 & MODULE 02 DM3560 WAS SNAGGED AT INIT INSP DURING OVERHAUL OF THIS MODULE AT RRC DUE TO CRACKING FOUND IN D OVE TAIL OF BLADE SLOTS OF STAGE 6 & STAGE 3. CRACKS CAN BE DETECTED BY VISUAL INSP ALONE. STAGE 6 DOVE TAIL SLOTS FEATURE CRACKS IN PRESSURE FACE TO RUNOUT RADIUS OF DOVE TAIL SLOTS. WORST AFFECTED DOVE TAIL AT NR 7 POS WHICH FEATURES AN OPEN CRACK APROX 0.410 LONG & EXTENDS ONTO FWD FACE. ROTOR WILL BE SENT BACK TO ROLLS ROYCE, DERBY, UK FOR INVESTIGATIO N. NO RPTS FROM OPERATOR OF ANY ABNORMAL MODE OF OP.2000-11-06TC:  FOLOW-UP DETAILS REQD

---
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.