# Incident 20110521010689I: Dehavilland DHC-6-300, May 21, 2011

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: May 21, 2011, 16:00 local time
- Airport: Grand Canyon West
- Damage: Minor damage
- Phase of flight: Unknown
- Operating rules: Air taxi and commuter (Part 135)
- Operator: GCNA
- Location: 35.1978° N, 114.0544° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=35.1978&lon=-114.0544&mi=10
- Aircraft: N178GC, registered now (https://openairdocs.org/aircraft/N178GC) (OpenAirDocs)
- Registry model: Dehavilland DHC-6-300 (registry code 2802630, https://openairdocs.org/model/dehavilland-dhc-6-300) (OpenAirDocs)
- Registry engine: Pratt & Whitney PT6A-27 series (registry code 52141, https://openairdocs.org/engine/pratt-whitney-pt6a-27-series) (OpenAirDocs)
- Reported make and model: DEHAVILLAND DHC-6-300
- Reported engine: P & W PT6A-27
- People aboard: 17
- Fatal injuries: 0
- Other injuries: 0
- NTSB investigation: [NTSB ENG11IA032](https://openairdocs.org/ntsb/ENG11IA032) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20110521010689I

## Narrative

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

N178GC WAS IN CRUISE FLIGHT ON AN AIR TOUR OF THE GRAND CANYON WHEN THE FLIGHT CREW REPORTED HEARING A LOUD SQUEALING NOISE COMING FROM THE LEFT ENGINE, FOLLOWED BY A LOUD "BANG" AND LOSS OF THE LEFT ENGINE POWER.  THE FLIGHT CREW SECURED THE LEFT ENGINE FOLLOWING THE EMERGENCY PROCEDURES CHECKLIST AND MADE AN UNEVENTFUL LANDING AT THE GRAND CANYON WEST AIRPORT (IG4).  DURING A POST FLIGHT INSPECTION, THE FLIGHT CREW NOTED THE LOWER INBOARD SECTION OF THE LEFT ENGINE COWLING HAD SEVERAL HOLES CREATED BY DEBRIS CREATED WHEN THE ENGINE SUFFERED AN UNCONTAINED ENGINE FAILURE.  THERE WAS NO DAMAGE NOTED TO THE AIRCRAFT FUSELAGE OR AIRCRAFT PRIMARY STRUCTURE

## 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 ENG11IA032](https://openairdocs.org/ntsb/ENG11IA032), May 21, 2011: Dehavilland DHC-6-300 (N178GC), Peach Springs, AZ, incident, no damage. Probable cause: A quality control failure in the Sungear, Inc. manufacturing and quality control process allowed sungears with surface finishes of the root fillet radius of the spline that did not conform to the…

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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