Atlas / NTSB / OAK73IP020

NTSB CAROL · Event

Event OAK73IP020

1973-11-17 OAKLAND, California, United States None 1 aircraft Status: Completed

Aircraft involved

N4606G Sikorsky S-61N 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

SIKORSKY S-61N · N4606G

Damage

Minor

Craft type

Balloon

Classification

C

Light condition

Dawn

Weather

VMC

Phase of flight

A7

Airport

OAKLAND INTL

Weather at impact

Sky

BROKEN/LOWER SCATTERED

Wind

140° / 15 kt

Temp

55° F

Aircraft history

Serial number

Z

Total time

6,387 hrs

Pilot

Certificate

ZA (ZA)

Probable cause (from PRE1982.MDB)

6155-63093-6 SHRTD,ENERGIZED MLG PUMP MOTOR RELAY.

Investigator remarks

TKOF RPM,JUST PRIOR LIFT-OFF.ELECT HARNESS P/N S

Cause factors

75/A/AJ A
SYSTEMS RELAYS AND WIRING Cause — pilot/personnel action
88/A/55 A
MISCELLANEOUS ACTS,CONDITIONS CORRODED/CORROSION Cause — pilot/personnel action

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 0026. Source file NTSB_1973_4_0026.txt. Modern CAROL record on data.ntsb.gov ↗.

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