# Incident 20110203002419I: Raytheon Ai BAE 125-800, Chesterfield, MO, February 3, 2011

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: February 3, 2011, 07:00 local time
- Place: Chesterfield, MO
- Airport: Spirit Of St. Louis Airport
- Damage: No damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: Air taxi and commuter (Part 135)
- Operator: UVCA
- Location: 38.6621° N, 90.6520° W: Placed by OpenAirDocs at SPIRIT OF ST LOUIS (SUS), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.6621&lon=-90.6520&mi=10
- Aircraft: N705BB, a cancelled registration (https://openairdocs.org/deregistered/N705BB-2017-03-29) (OpenAirDocs)
- Registry model: Raytheon BAE 125-800A (registry code 7150040, https://openairdocs.org/model/raytheon-bae-125-800a) (OpenAirDocs)
- Registry engine: Garrett TFE731 series (registry code 29001, https://openairdocs.org/engine/garrett-tfe731-series) (OpenAirDocs)
- Reported make and model: RAYTHEON AI BAE 125-800
- Reported engine: GARRETT TFE731-5R
- People aboard: 6
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport, flight instructor
- Pilot flight hours: 3,800 total, 1,800 in this make and model, 120 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20110203002419I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

PILOT HEARD A LOUD BANG FROM THE LEFT ENGINE AND NOTICED ITT DECREASING. ENGINE WAS SHUT DOWN AND PILOT RETURNED TO KSUS, APPROXIMATELY 24 MILES WITHOUT INCIDENT. AMENDED 09/27/2011 AS FOLLOWS: Inspection of the engine tailpipe revealed ferrous metal particles approximately the size of large grains of sand in the tailpipe and a slight scrapping sound could be heard during manual rotation of the engine turbine. Disassembly of the engine revealed two disk posts separated from the stage 2 low pressure compressor. Examination of the disc by the engine manufacturer concluded the posts separated due to high cycle fatigue. The root cause of the disc post separations could not be determined. To address the fretting of the rotating shroud and disc the engine manufacturer is in the process of releasing Service Bulletin TFE731-72-3777.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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