# NTSB SEA83LA091: Swift GC-1B, N80649, Everett, WA, April 27, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 27, 1983, 16:30 local (23:30 UTC)
- Place: Everett, WA
- Coordinates: 47.799629, -122.279304 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.7996&lon=-122.2793&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39687
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83LA091
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39687/pdf
- Page: https://openairdocs.org/ntsb/SEA83LA091

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - flare - improper, pilot in command (cause)
- Main gear collapsed, landing - flare/touchdown
  - landing gear,main gear - overload (contributing factor)

## Analysis

THE ACFTS LEFT MAIN LANDING GEAR SHEARED AND THE ACFT CAME TO REST OFF THE RUNWAY IN THE GRASS. THE PILOT SAID THAT EVENTHOUGH THE LANDING GEAR LIGHT INDICATED DOWN AND LOCKED HE DOES NOT BELIEVE THE RT MAIN GEAR WAS DOWN AND LOCKED. DURINGAN ATTEMPTED GO-AROUND THE LEFT GEAR SHEARED IN OVERLOAD DUE TO FAILURE TO MAINTAIN CONTROL. THE PASSENGER SAID THEY WERE IN AN APPROACH STALL WITH A HARD LANDING THAT COLLAPSED THE GEAR.

## Aircraft

- Registration: [N80649](https://openairdocs.org/aircraft/N80649), registered now, S/N 1054, built 1946 (OpenAirDocs)
- Reported make and model: SWIFT GC-1B
- Registry model: [Globe GC-1B](https://openairdocs.org/model/globe-gc-1b) (registry code 9230104) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1054
- Engines: CONTINENTAL C-125-2 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 91
- Registered owner: Albert M. Lavine
- Airworthiness certificate: Standard, Normal
- Departed: PAE, EVERETT, WA
- Destination: S13, ALDERWOOD MANOR, WA
- Airport: S13, Martha Lake, runway 34, 1,700 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial; airplane ratings: single-engine land; medical: unknown, expired; seat: left; flight hours: 560 total, 150 in this make and model, 560 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 12 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 59 °F, dew point 45 °F
- Altimeter: 29.00 inHg
- Observed at: PAE, 4 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 19830427043509A](https://openairdocs.org/incident/19830427043509A), Apr 27, 1983: Univac GC1B, Alderwood Manor, WA, Substantial damage. Aircraft was stalled during landing causing left gear to collapse which caused substantial damage.

## Other investigations on N80649 (1)

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 SEA67F0163](https://openairdocs.org/ntsb/SEA67F0163), Aug 21, 1966: Globe GC-1B (N80649), Vancouver, WA, 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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