Skip to content

IAD71II056

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

N224P has since been reassigned. It is now registered to a different aircraft (SONEX AIRCRAFT SUBSONEX JSX-2, built 2019), which was not involved in this event.

Aircraft involved

Historical record (pre-1982 coded fields)

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).

Source: NTSB pre-1982 historical archive. Docket 4 0036. Source file NTSB_1971_4_0036.txt. Modern CAROL record on data.ntsb.gov ↗.

Search this event elsewhere

External sources are reported, not agency: signal that something happened, not fact about what happened.