# NTSB SEA83LA005: Beech C35, N5894C, Seattle, WA, October 11, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 11, 1982, 16:00 local (23:00 UTC)
- Place: Seattle, WA
- Coordinates: 47.539264, -122.30902 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.5393&lon=-122.3090&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 11, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 72586
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83LA005
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72586/pdf
- Page: https://openairdocs.org/ntsb/SEA83LA005

## Analysis

WHILE HAND PROPPING TO START, THE ENGINE WENT TO FULL POWER. THE PILOT GAINED ACCESS TO THE CONTROLS AS THE AIRCRAFT BEGAN TO MOVE AGAINST THE LOCKED BRAKES. HOWEVER, HE WAS UNABLE TO STOP THE PLANE BEFORE IT HIT A BEECH 58P, N3664G. THE PILOT REPORTED THAT HE HAD INADVERTENTLY LEFT THE THROTTLE OPEN WHILE HE WAS CLEARING THE ENGINE DURING THE START. ALSO, HE FORGOT TO PRESS THE BUTTON ON THE THROTTLE CONTROL WHILE ATTEMPTING TO REDUCE THE POWER AFTER THE ENGINE HAD STARTED. MOST OF HIS FLYING TIME HAD BEEN IN AIRCRAFT THAT HAD A DIFFERENT TYPE OF THROTTLE.

## Sequence of events

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

- On ground/water collision with object, taxi
  - electrical system,battery - output low (contributing factor)
  - proper assistance - not obtained, pilot in command (cause)
  - throttle/power control - improper use of, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (contributing factor)
  - habit interference, pilot in command (contributing factor)
  - object - aircraft parked/standing (contributing factor)

## Aircraft

- Registration: N5894C (not matched to a registry record)
- Reported make and model: BEECH C35
- Category: Airplane
- Serial number: D-2847
- Airframe hours: 4625
- Engines: CONTINENTAL E-185-11 205 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Thomas E. Mock
- Registered owner: Thomas E. Mock
- Departed: BFI, SEATTLE, WA
- Destination: S36, KENT, WA
- Airport: BFI, Boeing Field

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; flight hours: 863 total, 19 in this make and model, 746 as pilot in command, 33 in the last 90 days, 9 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 8 knots
- Visibility: 15 statute miles
- Temperature: 154 °F
- Altimeter: 30.00 inHg
- Observed at: BFI

## 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 19821011052169A](https://openairdocs.org/incident/19821011052169A), Oct 11, 1982: Beech 35BEECH, Seattle, WA, Substantial damage. Pilot hand propped aircraft with no one at controls. Aircraft crashed into another aircraft parked nearby.

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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