# Accident 20211011017509A: Beech 58TC, Molina, CO, October 11, 2021

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 11, 2021, 08:56 local time
- Place: Molina, CO
- Damage: Destroyed
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 39.2065° N, 108.1237° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=39.2065&lon=-108.1237&mi=10
- Aircraft: N6748V, registered now (https://openairdocs.org/aircraft/N6748V) (OpenAirDocs)
- Registry model: Beech 58TC (registry code 1152746, https://openairdocs.org/model/beech-58tc) (OpenAirDocs)
- Registry engine: Continental TSIO-520 series (registry code 17040, https://openairdocs.org/engine/continental-tsio-520-series) (OpenAirDocs)
- Reported make and model: BEECH 58TC
- Reported engine: CONT MOTOR TSIO-520 SER
- People aboard: 1
- Fatal injuries: 1
- Other injuries: 0
- Pilot certificates: Private pilot
- Pilot flight hours: 3,851 total, 1 in the last 90 days
- NTSB investigation: [NTSB CEN22FA011](https://openairdocs.org/ntsb/CEN22FA011) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20211011017509A

## Narrative

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

ON OCTOBER 11, 2021, THE PILOT DEPARTED FROM THE DELTA COLORADO AIRPORT (KAJZ) ON AN IFR FLIGHT PLAN IN MOUNTAINOUS TERRAIN IN A BEECH 58 AIRCRAFT.  REPORTED WINDS AT THE NEAREST AIRPORT, GRAND JUNCTION, FROM THE ACCIDENT SITE WAS REPORTING WINDS FROM 110 DEGREES AT 15 KNOTS AT 1453 UTC THREE MINUTES PRIOR TO THE ACCIDENT AT AN ALTITUDE OF 4,861 MSL, WITH WINDS INCREASING TO 130 DEGREES 21 GUSTING TO 27 KNOTS AT 1553 UTC.  THE PILOT CLIMBED TO A CRUISING AT AN ALTITUDE OF 15, 000 MSL WHERE THE ROAB PROGRAM DEPICTED A POTENTIAL OF MOUNTAIN WAVES, AND THE GOES-16 INFRARED AND VISIBLE IMAGERY SURROUNDING THE PERIOD DEPICTED SCATTERED MID-LEVEL CLOUDS OVER THE AREA ASSOCIATED WITH ALTOCUMULUS STANDING LENTICULAR (ACSL).  IN ADDITION PILOT REPORTS IN THE SURROUNDING AREA WERE REPORTING UP TO MODERATE TURBULENCE.

ADS-B DATA OBTAINED FROM FLIGHTAWARE INDICATES THE PILOT EXPERIENCED DRASTIC CHANGES IN THE RATES OF CLIMB AND DESCENT OVER SHORT PERIODS OF TIME.  DATA INDICATES AT 10:55:20 THE PILOT WENT FROM A 400 FPM CLIMB TO 1080 FPM DESCENT IN 30 SECONDS, FOLLOWED BY CHANGE OF 1,500 FPM CLIMB OVER 20 SECONDS THEN A RAPID DESCENT UP TO 8,600 FPM WITH A RAPID DECREASE IN AIRSPEED RESULTING IN A NEAR VERTICAL DESCENT AT APPROXIMATELY 21 KNOTS AIRSPEED.  THE AIRCRAFT IMPACTED THE TERRAIN UPRIGHT IN A NEARLY FLAT POSITION WITH ALL PARTS OF THE AIRCRAFT IN CLOSE PROXIMITY INDICATING A POSSIBLE FLAT SPIN.

## 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 CEN22FA011](https://openairdocs.org/ntsb/CEN22FA011), Oct 11, 2021: Beech 58TC (N6748V), Mesa, CO, destroyed, 1 fatal. Probable cause: The maintenance personnel’s failure to properly tighten the turbocharger oil line and the right engine propeller governor, which resulted in a loss of engine power. Contributing to the accident was…

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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