# NTSB DEN86LA140: Cessna 172B, N6990X, Alamosa, CO, May 19, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 19, 1986, 10:15 local (16:15 UTC)
- Place: Alamosa, CO
- Coordinates: 37.460514, -105.869804 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.4605&lon=-105.8698&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16967
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA140
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16967/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA140

## Sequence of events

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

- Loss of control - in flight, landing
  - stall - inadvertent, pilot in command (cause)
- Hard landing, landing
- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (cause)
- Nose over, landing - roll

## Analysis

THE STUDENT PLT HAD SOLOED THAT MORNING. AFTER A SHORT REST PERIOD HE FLEW WITH HIS INSTRUCTOR. HE THEN FLEW A SECOND SOLO FLT. THE STUDENT PLT MADE TWO LANDINGS. ON THE THIRD APPROACH THE PLT MADE A GO-AROUND. ON THE NEXT APPROACH THE ACFT STALLED CLOSE TO THE RWY, MADE A HARD LANDING, AND OVERTURNED.

## Aircraft

- Registration: [N6990X](https://openairdocs.org/deregistered/N6990X-1989-03-03), registration cancelled 1989-03-03, S/N 17247890 (OpenAirDocs)
- Reported make and model: CESSNA 172B
- Registry model: [Cessna 172B](https://openairdocs.org/model/cessna-172b) (registry code 2072406) (OpenAirDocs)
- Category: Airplane
- Serial number: 17247890
- Airframe hours: 4277
- Engines: CONTINENTAL O-300-D 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Donald L. Ecord, doing business as Mountain View Airmotive
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 29, 1986, 61 hours before
- Airport: ALS, Alamosa Municipal/Bergman, runway 20, 8,500 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; student; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 15 total, 8 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 5 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 59 °F, dew point 28 °F
- Altimeter: 30.00 inHg
- Observed at: ALS

## 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 19860519018599A](https://openairdocs.org/incident/19860519018599A), May 19, 1986: Cessna 172B, Alamosa, CO, Substantial damage. Student on second solo flight bounced, lost control, ran off the runway and overturned.

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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