Atlas / NTSB / LAX78FUG47

NTSB CAROL · Event

Event LAX78FUG47

1978-08-20 CORONA, California, United States Minor 1 aircraft Status: Completed

Aircraft involved

N9953L GRUM AMER AA1-B Minor

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

GRUM AMER AA1-B · N9953L

Damage

Substantial

Craft type

Airplane

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D1

Operator type

D

Airport

CORONA

Kind of flying

B0

Weather at impact

Sky

CLEAR

Temp

75° F

Aircraft history

Serial number

000000000253

Total time

3,251 hrs

Pilot

Certificate

Commercial — instrument

Total hours

121

Age

23

Investigator remarks

OIL PRESSURE SWITCH FAILED.NO ID ON SWITCH.

Cause factors

74/C/DY C
POWERPLANT OTHER Cause
88/C/CM C
MISCELLANEOUS ACTS,CONDITIONS PRESSURE,NONE Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
83/K/F K
TERRAIN ROUGH/UNEVEN 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 2921. Source file NTSB_1978_3_2921.txt. Modern CAROL record on data.ntsb.gov ↗.

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