# Accident 20091021021399A: Gulstm 690, Cedar City, UT, October 21, 2009

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 21, 2009, 10:15 local time
- Place: Cedar City, UT
- Airport: Cedar City Regional
- Damage: Substantial damage
- Phase of flight: Landing
- Operating rules: General operating rules (Part 91)
- Operator: K51A
- Location: 37.7011° N, 113.1517° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=37.7011&lon=-113.1517&mi=10
- Aircraft: N690TR, registered now (https://openairdocs.org/aircraft/N690TR) (OpenAirDocs)
- Registry model: Aero Commander 690 (registry code 0141720, https://openairdocs.org/model/aero-commander-690) (OpenAirDocs)
- Registry engine: Garrett TPE331-5 (registry code 29041, https://openairdocs.org/engine/garrett-tpe331-5) (OpenAirDocs)
- Reported make and model: GULSTM 690
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot flight hours: 3,100 total, 300 in this make and model, 50 in the last 90 days
- NTSB investigation: [NTSB WPR10LA034](https://openairdocs.org/ntsb/WPR10LA034) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20091021021399A

## Narrative

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

ON OCTOBER 21, 2009 N690TR, A TWIN COMMANDER 690, EXPERIENCED A COLLAPSE OF THE RH MAIN LANDING GEAR WHILE ATTEMPTING TO LAND AT CEDAR CITY, UT (CDC).  THE FLIGHT ORIGINATED FROM CEDAR CITY, UT AND WAS ENROUTE TO MILFORD, UT WHEN THE RH MAIN GEAR WOULD NOT EXTEND FULLY.  THE PILOT RETURNED TO CEDAR CITY, UT AND ATTEMPTED FOR APPROXIMATELY TWO HOURS TO GET THE GEAR TO EXTEND.  WHEN THE AIRCRAFT TOUCHED DOWN ON THE RUNWAY, THE RH MAIN GEAR COLLAPSED AND THE AIRCRAFT CAME TO REST ON THE RIGHT HAND SIDE OF IT'S BELLY JUST INSIDE OF THE RIGHT HAND GEAR.  THE AIRCRAFT SLID TO THE RIGHT, DEPARTED THE RUNWAY INTO THE DIRT AND CAME TO REST APPROXIMATELY TEN FEET FROM THE EDGE OF THE RUNWAY.  THERE WAS ONE PERSON ON BOARD THE AIRCRAFT WITH NO INJURIES.

## 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 WPR10LA034](https://openairdocs.org/ntsb/WPR10LA034), Oct 21, 2009: Aero Commander 690 (N690TR), Cedar City, UT, substantial damage. Probable cause: The failure of the landing gear accumulator/regulator and the installation of the improper priority valve, which precluded the landing gear from extending and locking into place.

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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