# NTSB DEN86LA159: Cessna 150L, N1739Q, Bountiful, UT, June 12, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 11, 1986, 20:30 local (Jun 12, 1986, 02:30 UTC)
- Place: Bountiful, UT
- Coordinates: 40.88021, -111.819152 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.8802&lon=-111.8192&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16980
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA159
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16980/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA159

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, approach - vfr pattern - downwind
  - fluid,fuel - exhaustion (cause)
  - aircraft preflight - inadequate, pilot in command (cause)
  - inadequate initial training, flight instructor(on ground) (cause)
- Forced landing, approach - vfr pattern - downwind
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - dirt bank/rising embankment

## Analysis

THE PLT SAID HE HAD BEEN AIRBORNE FOR ABOUT 1.25 HRS WHEN THE ENG BEGAN TO CUT OUT. EMERG PROCEDURES DID NOT REMEDY THE SITUATION AND AN OFF ARPT FORCED LANDING WAS NECESSARY. THE PLT SAID HE DID NOT LOOK IN THE FUEL TANKS PRIOR TO TAKEOFF BUT RELIED ON THE FUEL GAUGES. THE FUEL GAUGES SHOWED ONE-HALF ON THE L TANK AND ONE-QUARTER ON THE R TANK. THE AIRCRAFT WAS EXAMINED AFTER THE ACDT AND NO EVIDENCE OF FUEL WAS FOUND.

## Aircraft

- Registration: N1739Q (not matched to a registry record)
- Reported make and model: CESSNA 150L
- Category: Airplane
- Serial number: 15073039
- Airframe hours: 3861
- Engines: CONTINENTAL O-200A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Ski Park Aviation
- Registered owner: Steven H. Young
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, July 22, 1985, 170 hours before
- Airport: BTF, Skypark, runway 34, 4,700 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; student; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 9 total, 9 in this make and model, 4 as pilot in command, 9 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 7 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 50 °F
- Altimeter: 30.00 inHg
- Observed at: SLC, 5 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 19860611023619A](https://openairdocs.org/incident/19860611023619A), Jun 11, 1986: Cessna 150L, Bountiful, UT, Substantial damage. Student pilot was unable to return to the runway after engine failure. Engine failed due to fuel starvation.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.