Atlas / NTSB / SEA79FA057

NTSB CAROL · Event

Event SEA79FA057

1979-09-07 BELLINGHAM, Washington, United States Serious 1 aircraft Status: Completed

Aircraft involved

N249D Beech D35 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

BEECH D35 · N249D

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

D

Kind of flying

B0

Weather at impact

Sky

BROKEN

Temp

72° F

Aircraft history

Serial number

0000000D3644

Total time

6,356 hrs

Pilot

Certificate

Commercial — instrument

Total hours

423

Age

54

Probable cause (from PRE1982.MDB)

E TO REACH ARPT. BLADES SEPARATED JUST BEFORE LNDG

Investigator remarks

TWO BLADE LOCKS FAILED,UNCONTROL PROP. PLT UNABL

Cause factors

68/C/D6 C
PERSONNEL INADEQUATE MAINTENANCE AND INSPECTION Cause
74/C/FI C
POWERPLANT BLADE RETENTION MECHANISM Cause
88/C/BQ C
MISCELLANEOUS ACTS,CONDITIONS EXCESSIVE-WEAR/PLAY Cause
88/C/BA C
MISCELLANEOUS ACTS,CONDITIONS BINDING Cause
88/B/DG B
MISCELLANEOUS ACTS,CONDITIONS INTENTIONAL WHEELS-UP
88/L/49 L
MISCELLANEOUS ACTS,CONDITIONS SEPARATION IN FLIGHT

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 2675. Source file NTSB_1979_3_2675.txt. Modern CAROL record on data.ntsb.gov ↗.

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