Atlas / NTSB / IAD71II056

NTSB CAROL · Event

Event IAD71II056

1971-06-03 WASHINGTON, District of Columbia, United States None 1 aircraft Status: Completed

Registry · N224P

FAA Aircraft Registry record.

Make / Model

SONEX AIRCRAFT SUBSONEX JSX-2

Year of manufacture

2019

Engine

PBS TJ100

Seats / Engines

1 seats · 1 engine

Last airworthiness date

20190306

ADS-B equipped

Yes — Mode-S A1F122

Registrant of record

STEFFEY RYAN J

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N224P NIHON YS-11A 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

NIHON YS-11A · N224P

Damage

Minor

Craft type

Airplane

Classification

C

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Aircraft history

Serial number

Z

Pilot

Certificate

DA (DA)

Total hours

11,503

Age

37

Probable cause (from PRE1982.MDB)

MILLING THRU BACKING PLATE.IMPELLER FAILED.

Investigator remarks

BOLT FROM INLET GUIDE VANE,NR 1 ENG,LOOSE.CAUSED

Cause factors

74/C/MK C
POWERPLANT IMPELLER Cause
88/C/BG C
MISCELLANEOUS ACTS,CONDITIONS CHAFED Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL 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 4 0036. Source file NTSB_1971_4_0036.txt. Modern CAROL record on data.ntsb.gov ↗.

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