Atlas / NTSB / MKC81FA054

NTSB CAROL · Event

Event MKC81FA054

1981-09-20 IOWA CITY, Iowa, United States None 1 aircraft Status: Completed

Aircraft involved

N352RM AEROSPATLE AS350D None

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 AS350D · N352RM

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

E

Weather

VMC

Phase of flight

D2

Operator type

E

Airport

U OF IOWA HELIPAD

Kind of flying

CI

Weather at impact

Sky

CLEAR

Wind

360° / 10 kt

Aircraft history

Serial number

000000001026

Total time

2,480 hrs

Pilot

Certificate

Commercial

Total hours

2,133

Age

35

Probable cause (from PRE1982.MDB)

& ENG MAIN GEAR BOX SHAFT INSTALLED INCORRECTLY.

Investigator remarks

WASHERS ON FLEXIBLE COUPLING BTN HYD PUMP PULLEY

Cause factors

68/C/D0 C
PERSONNEL IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL) Cause
78/C/BA C
ROTORCRAFT ENGINE DRIVE SHAFT Cause
88/C/CB C
MISCELLANEOUS ACTS,CONDITIONS IMPROPERLY INSTALLED 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 2199. Source file NTSB_1981_3_2199.txt. Modern CAROL record on data.ntsb.gov ↗.

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