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Atlas / NTSB / SEA69A0061

NTSB CAROL · Event

Event SEA69A0061

1969-06-20 PASCO, Washington, United States Fatal 1 aircraft Status: Completed

Registry · N2550A

FAA Aircraft Registry record.

Make / Model

TC TRIKES INC 503 TC TRIKE

Year of manufacture

2003

Engine

ROTAX 447 (40 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

20070812

ADS-B equipped

Yes — Mode-S A26C6A

Registrant of record

LOWERY DERRICK L

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Historical record (pre-1982)

NTSB recorded this accident in the pre-1982 coded-field schema — structured fields rather than free-text narrative. Decoded codes use established NTSB single-letter taxonomies; cause factors remain verbatim pending the Form 6120.4 codebook lookup.

Aircraft

BEECH 99 · N2550A

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

Takeoff — initial climb (C1)

Operator type

Part 135 (air taxi/commuter)

Airport

TRI-CITIES

Kind of flying

CI

Weather at impact

Sky

CLEAR

Wind

250° / 20 kt

Temp

89° F

Aircraft history

Serial number

0000000U-106

Total time

85 hrs

Pilot

Certificate

Commercial

Total hours

4,280

Age

36

Probable cause (from PRE1982.MDB)

FULL NOSE UP POSITION.PIC SEAT UNLOCKED,FULL AFT.

Investigator remarks

PITCHED UP STEEPLY AFTER T/O.PITCH TRIM FOUND IN

Cause factors

  • 64/A/29 A
    PILOT IN COMMAND INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING Cause — pilot/personnel action
  • 65/A/23 A
    COPILOT Cause — pilot/personnel action
  • 65/A/16 A
    COPILOT Cause — pilot/personnel action

Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table). Each row shows the raw triplet, modifier (Cause / Factor / etc.), category, and specific code.

Source: NTSB pre-1982 historical archive. Docket 3 3710. Source file NTSB_1969_3_3710.txt. Modern CAROL record on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗