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Atlas / NTSB / SEA70D0109

NTSB CAROL · Event

Event SEA70D0109

1969-10-19 MONROE, Washington, United States None 1 aircraft Status: Completed

Registry · N18642

FAA Aircraft Registry record.

Make / Model

MONOCOUPE 110

Year of manufacture

1933 · 36 years old at event

Engine

WARNER SCARAB SERIES (125 hp)

Seats / Engines

2 seats · 1 engine

ADS-B equipped

Yes — Mode-S A159F5

Registrant of record

HISTORIC AIRCRAFT RESTORATION MUSEUM

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

MONOCOUPE 110 · N18642

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D7

Operator type

D

Kind of flying

B0

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

000000006W53

Total time

1,947 hrs

Pilot

Certificate

Flight instructor (CFI)

Total hours

547

Age

28

Probable cause (from PRE1982.MDB)

CE SPIN. CRASH LANDED IN FLD.

Investigator remarks

R HORIZ STAB TWISTED DURING RECOVERY FROM PRACTI

Cause factors

  • 70/C/D3 C
    AIRFRAME HORIZONTAL STABILIZER, ATTACHMENTS Cause
  • 64/C/09 C
    PILOT IN COMMAND EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT Cause
  • 88/C/94 C
    MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE Cause

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 4147. Source file NTSB_1969_3_4147.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 ↗