# NTSB DEN86LA195: Cessna 320C, N3030T, Cedar City, UT, July 12, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 12, 1986, 12:30 local (18:30 UTC)
- Place: Cedar City, UT
- Coordinates: 37.590744, -113.190437 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.5907&lon=-113.1904&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 17009
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA195
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17009/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA195

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - nonmechanical, approach - vfr pattern - final approach
  - weather condition - high density altitude (contributing factor)
  - mixture - improper, pilot in command (cause)
- In flight collision with terrain/water, landing - flare/touchdown
  - airport facilities,runway/landing area condition - none suitable (cause)

## Analysis

THE PLT SAID THAT WHILE ON DOWNWIND DURING HIS APCH TO LAND, HE ADVANCED THE MIXTURES TO FULL RICH AND RETARDED THE THROTTLES. ON FINAL APPROACH WHEN THROTTLES WERE ADVANCED, HE DISCOVERED THE RIGHT ENG WAS NOT RUNNING AND THE LEFT ENG WOULD NOT RESPOND NORMALLY. HE ELECTED TO LAND IMMEDIATELY AND PUT THE ACFT DOWN ON LEVEL TERRAIN. POST ACCIDENT EXAM OF THE RIGHT ENG DISCLOSED EVIDENCE OF HAVING BEEN OPERATED WITH AN EXCESSIVELY RICH MIXTURE. DENSITY ALT AT THE TIME OF THE ACCIDENT WAS CALCULATED TO BE 9,819 FT MSL.

## Aircraft

- Registration: [N3030T](https://openairdocs.org/deregistered/N3030T-1989-04-04), registration cancelled 1989-04-04, S/N 320C0030 (OpenAirDocs)
- Reported make and model: CESSNA 320C
- Registry model: [Cessna 320C](https://openairdocs.org/model/cessna-320c) (registry code 2074510) (OpenAirDocs)
- Category: Airplane
- Serial number: 320C0030
- Engines: CONTINENTAL TISO-470-D 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Robert Allen Davis
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, July 11, 1986, 2 hours before
- Departed: HMT, HEMET, CA
- Destination: CDC, CEDAR CITY, UT
- Flight plan: VFR
- Airport: CDC, Cedar City Municipal, runway 20, 7,800 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; private; airplane ratings: single-engine land, multi-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,560 total, 60 in this make and model, 22 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 7 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 108 °F, dew point 86 °F
- Altimeter: 30.00 inHg
- Observed at: CDC, 1 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19860712032249A](https://openairdocs.org/incident/19860712032249A), Jul 12, 1986: Cessna 320C, Cedar City, UT, Substantial damage. Engines lost power in pattern. Pilot elected emergency landing. Failed to lean mixture at high density altitude.

## Other investigations on N3030T (2)

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 CHI72FEI10](https://openairdocs.org/ntsb/CHI72FEI10), Jul 30, 1971: Cessna 320 (N3030T), Toledo, OH, substantial damage
- [NTSB CHI70F0225](https://openairdocs.org/ntsb/CHI70F0225), Sep 6, 1969: Cessna 320C (N3030T), Mc Clure, OH, substantial damage

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.

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