# SDR ASAA2021031234297

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2021
- Submitted: March 30, 2021
- Operation: Air carrier
- Aircraft: [N514AS](https://openairdocs.org/aircraft/N514AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35193
- Aircraft time: 45,016 hours, 13,374 cycles
- Engine: Cfmint CFM567B27
- Engine time: 45,016 hours, 13,374 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Guide Vane
- Condition: Damaged
- Location: Lt Engine
- Part time: 45,016 hours, 13,374 cycles
- Stage of operation: IN
- How discovered: B
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021031234297

## Discrepancy

REF DEFECT NO. 11988672 ENG #1 ESN 896796 BSI NGV AIRFOIL HAS MISSING MATERIAL. GROUNDED - YES. FOUND DAMAGE TO NGV AIRFOIL HAD PROPAGATED. THE HOLE/MISSING MATERIAL NOW MEASURES 0.0225 IN.SQ. REQUIRES ENGINE REMOVAL IN 25 CYCLES IAW B737-800 AMM 72-00-00-200-811-F00 FIGURE 635 SHEET 4.

---
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.