Skip to content

Atlas / NTSB / OAK68A0067

NTSB CAROL · Event

Event OAK68A0067

1968-05-13 MASON CITY, Iowa, United States Serious 1 aircraft Status: Completed

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

BOEING 720B · N7549AA

Damage

None

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Weather at impact

Sky

BROKEN

Pilot

Certificate

ZA (ZA)

Probable cause (from PRE1982.MDB)

TO POSSIBLE TURB.

Investigator remarks

CREW WARNED PAX TO KEEP SEAT BELTS FASTENED DUE

Cause factors

  • 82/A/K A
    WEATHER TURBULENCE IN FLIGHT,CLEAR AIR Cause — pilot/personnel action
  • 88/J/93 J
    MISCELLANEOUS ACTS,CONDITIONS SEAT BELT SIGN OFF Joint 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 1 0017. Source file NTSB_1968_1_0017.txt. Modern CAROL record on data.ntsb.gov ↗.