# NTSB SEA88LA188: Svensson Bushby Mustang II, N7SV, Everett, WA, September 24, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Limited investigation · Final report
- Date: September 24, 1988, 13:20 local (20:20 UTC)
- Place: Everett, WA
- Coordinates: 48.559417, -122.800071 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.5594&lon=-122.8001&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report November 28, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40895
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA88LA188
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40895/pdf
- Page: https://openairdocs.org/ntsb/SEA88LA188

## Sequence of events

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

- In flight encounter with weather, unknown
  - weather condition - low ceiling (contributing factor)
  - weather condition - fog (contributing factor)
  - weather condition - drizzle/mist (contributing factor)
  - vfr flight into imc - inadvertent, pilot in command (cause)
- Loss of control - in flight, unknown
  - aircraft control - not maintained, pilot in command (cause)
  - spatial disorientation, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

JUST PRIOR TO THE ACDNT, WITNESSES SAW THE ACFT IN A STEEP, HIGH SPEED DESCENT. IMPACT OCCURRED IN SOFT, MARSHY TERRAIN & MUCH OF THE WRECKAGE WAS BURIED. NO MECHANICAL REASON WAS FOUND FOR A LOSS OF CONTROL; HOWEVER, THE ACFT WAS EXTENSIVELY DAMAGED DRG IMPACT. ABOUT 5 MI ENE AT PAYNE FIELD, THE WX WAS, IN PART: 3500' SCATTERED, 7500' OVERCAST, VISIBILITY 3 MI WITH LIGHT DRIZZLE & FOG, WIND 040 AT 5 KTS. APRX 9 MI NORTH AT CASCADE AIRPARK, THE CEILING WAS ESTIMATED TO BE 500' TO 800'.

## Aircraft

- Registration: [N7SV](https://openairdocs.org/deregistered/N7SV-1988-09-24), registration cancelled 1988-09-24, S/N 479 (OpenAirDocs)
- Reported make and model: SVENSSON BUSHBY MUSTANG II (BUSHBY MUS)
- Registry model: [Svensson BUSHBY MUSTANG II](https://openairdocs.org/model/svensson-bushby-mustang-ii) (registry code 1690613) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 479
- Engines: LYCOMING O-290 125 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Carl I. Svenson
- Airworthiness certificate: Special, Experimental (Special)
- Departed: EVERETT, WA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 750 total

## Weather

- Conditions: Day
- Wind: 40° at 5 knots
- Visibility: 3 statute miles
- Temperature: 52 °F, dew point 46 °F
- Altimeter: 29.00 inHg
- Observed at: PAE, 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 19880924040059A](https://openairdocs.org/incident/19880924040059A), Sep 24, 1988: Amtrbb MUSTANG2, Everett, WA, Destroyed, 2 fatal. Was seen to dive vertically into a marsh. Low ceiling reported in area.

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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