# Incident 20230617021959I: Gulfstream Aerospace G-IV, Sioux City, IA, June 17, 2023

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 17, 2023, 11:00 local time
- Place: Sioux City, IA
- Airport: Sioux Gateway Airport
- Damage: Minor damage
- Phase of flight: Cruise/Level Flight
- Operating rules: Air taxi and commuter (Part 135)
- Operator: 7P9A
- Location: 42.3985° N, 96.3822° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=42.3985&lon=-96.3822&mi=10
- Aircraft: N926TT, registered now (https://openairdocs.org/aircraft/N926TT) (OpenAirDocs)
- Registry model: Gulfstream Aerospace G-IV (registry code 3980115, https://openairdocs.org/model/gulfstream-aerospace-g-iv) (OpenAirDocs)
- Registry engine: Rolls-Royce TAY-611SER (registry code 54561, https://openairdocs.org/engine/rolls-royce-tay-611ser) (OpenAirDocs)
- Reported make and model: GULFSTREAM AEROSPACE G-IV
- Reported engine: ROLLS-ROYC TAY
- People aboard: 9
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport
- Pilot flight hours: 8,564 total
- NTSB investigation: [NTSB ENG23LA030](https://openairdocs.org/ntsb/ENG23LA030) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20230617021959I

## Narrative

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

PIC STATED THAT TAKEOFF AND DEPARTURE WERE NORMAL. DURING CRUISE FLIGHT CONTINOUS LIGHT CHOP AND MODERATE TURBULANCE WERE EXPERIENCED. HE REQUESTED AND RECEIVED CLEARANCE TO FL430. AFTER 30-40 SECONDS HE REPORTS HEARING "A MASSIVE EXPOSION SOUNDING NOISE." ATC WAS NOTIFIED OF ENGINE FAILURE. PILOT REQUESTED LANDING AT THE NEAREST SUITABLE AIRPORT. AIRCRAFT LANDED WITHOUT ANY FURTHER ISSUES.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ENG23LA030](https://openairdocs.org/ntsb/ENG23LA030), Jun 17, 2023: Gulfstream Aerospace G-IV (N926TT), Sioux City, IA, incident, minor damage. Probable cause: A No. 2 (right) engine failure due to a spinner fairing separation and subsequent impact with the fan blades that resulted in a midspan fracture of one fan blade. The spinner fairing separated as a…

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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