Atlas / NTSB / SEA81FYP01

NTSB CAROL · Event

Event SEA81FYP01

1980-10-06 WATERVILLE, Washington, United States Serious 1 aircraft Status: Completed

Aircraft involved

N7710D Piper PA-22 Serious

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

PIPER PA-22 · N7710D

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dusk

Weather

VMC

Phase of flight

D1

Operator type

D

Kind of flying

B0

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

0000022-5382

Total time

1,963 hrs

Pilot

Certificate

Airline transport

Total hours

96

Age

46

Probable cause (from PRE1982.MDB)

UCTION NCW.

Investigator remarks

NR 2 MAIN BEARING FAILED. LYCOMING SERVICE INSTR

Cause factors

68/C/D6 C
PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Cause
74/C/AB C
POWERPLANT CRANKSHAFT Cause
88/C/BQ C
MISCELLANEOUS ACTS,CONDITIONS EXCESSIVE-WEAR/PLAY Cause
83/K/A K
TERRAIN WET,SOFT GROUND Joint factor

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 2654. Source file NTSB_1980_3_2654.txt. Modern CAROL record on data.ntsb.gov ↗.

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