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Atlas / NTSB / SEA78FYM32

NTSB CAROL · Event

Event SEA78FYM32

1978-05-11 PORTLAND, Oregon, United States None 1 aircraft Status: Completed

Registry · N5954

FAA Aircraft Registry record.

Make / Model

VAN'S AIRCRAFT RV-12IS

Year of manufacture

2025

Engine

ROTAX 912 IS (100 hp)

Seats / Engines

2 seats · 1 engine

Last airworthiness date

20250317

ADS-B equipped

Yes — Mode-S A7B2DE

Registrant of record

REGISTRATION PENDING

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

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

S.N.I.A.S. SA316B · N5954

Damage

Substantial

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

C2

Operator type

Personal/private

Kind of flying

DC

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Wind

270° / 10 kt

Temp

54° F

Aircraft history

Serial number

000000001825

Total time

2,986 hrs

Pilot

Certificate

DA (DA)

Total hours

3,702

Age

33

Investigator remarks

FRONT COMPRESSOR BEARING FAILED.

Cause factors

  • 74/C/KD C
    POWERPLANT COMPRESSOR STALLS Cause
  • 88/C/CV C
    MISCELLANEOUS ACTS,CONDITIONS VIBRATION,EXCESSIVE Cause
  • 74/C/MI C
    POWERPLANT BEARING,ROTOR SHAFT 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 3 1825. Source file NTSB_1978_3_1825.txt. Modern CAROL record on data.ntsb.gov ↗.