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OAK73IP020

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

Aircraft involved

Historical record (pre-1982 coded fields)

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).

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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