# NTSB SEA87LA015: Mooney M20D, N6625U, Hillsboro, OR, October 27, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: October 27, 1986, 11:30 local (19:30 UTC)
- Place: Hillsboro, OR
- Coordinates: 45.440963, -122.960578 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.4410&lon=-122.9606&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40559
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87LA015
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40559/pdf
- Page: https://openairdocs.org/ntsb/SEA87LA015

## Sequence of events

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

- Overrun, landing - roll
  - weather condition - tailwind (contributing factor)
  - in-flight planning/decision - inadequate, pilot in command (cause)
  - wrong runway - selected, pilot in command (cause)
  - go-around - delayed, pilot in command (cause)
- In flight collision with object, takeoff - initial climb
  - object - tree(s) (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT ELECTED TO LAND WITH A 12 TO 15 KNOT TAILWIND. AN EXCESSIVE GROUND SPEED RESULTED WITH AN OVERSHOOT. THE PILOT ELECTED TO GO-AROUND TOO LATE AND ONCE THE GO-AROUND WAS ATTEMPTED THE AIRCRAFT STRUCK TREES AT THE DEPARTURE END OF THE RUNWAY AT ABOUT 10 FT AGL. THE ACFT CAME TO REST IN A FRESHLY PLOWED FIELD.

## Aircraft

- Registration: [N6625U](https://openairdocs.org/deregistered/N6625U-1989-06-28), registration cancelled 1989-06-28, S/N 120 (OpenAirDocs)
- Reported make and model: MOONEY M20D
- Registry model: [Mooney M20D](https://openairdocs.org/model/mooney-m20d) (registry code 5870210) (OpenAirDocs)
- Category: Airplane
- Serial number: 120
- Airframe hours: 2406
- Engines: LYCOMING O-360-AID 180 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: F. Mattman & Albert Corneliusm
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 28, 1986
- Departed: HIO, HILLSBORO, OR
- Airport: 7S3, Starks Twin Oaks Airpark, runway 20, 2,100 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 64; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,139 total, 60 in this make and model, 50 in the last 90 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 20 statute miles
- Lowest ceiling: 4,500 ft broken
- Temperature: 61 °F

## 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 19861027051559A](https://openairdocs.org/incident/19861027051559A), Oct 27, 1986: Mooney M20D, Hillsboro, OR, Destroyed. The aircraft struck trees during go around. Pilot had attempted a landing with 12 to 15 knots of tailwind.

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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