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Atlas / NTSB / SEA81DYA27

NTSB CAROL · Event

Event SEA81DYA27

1981-08-30 DRIGGS, Idaho, United States None 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

AEROSPATLE SA316B · N84850

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D4

Operator type

E

Kind of flying

CJ

Weather at impact

Sky

CLEAR

Wind

270° / 15 kt

Aircraft history

Serial number

000000002229

Total time

2,450 hrs

Pilot

Certificate

Commercial

Total hours

4,560

Age

36

Probable cause (from PRE1982.MDB)

5,WORN EXCESSIVELY.

Investigator remarks

TEETH OF SPLINED COUPLING GEAR,PN 3130-567-12-00

Cause factors

  • 68/C/D0 C
    PERSONNEL IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL) Cause
  • 78/C/BG C
    ROTORCRAFT TAIL ROTOR DRIVE SHAFT ASSEMBLY Cause
  • 88/C/80 C
    MISCELLANEOUS ACTS,CONDITIONS LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM 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 2664. Source file NTSB_1981_3_2664.txt. Modern CAROL record on data.ntsb.gov ↗.