Event UNK64X4059

1964-09-20 PALMDALE, California, United States None 1 aircraft Status: Completed

Aircraft involved

N7504A BOEING 707 123B 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

BOEING 707 123B · N7504A

Damage

Minor

Craft type

Airplane

Classification

C

Light condition

Dawn

Weather

VMC

Phase of flight

DC

Airport

PALMDALE-AF

Weather at impact

Sky

UNKNOWN/NOT REPORTED

Aircraft history

Total time

15,811 hrs

Pilot

Certificate

DA (DA)

Total hours

20,500

Age

45

Probable cause (from PRE1982.MDB)

ONTROLS-FAA AIR CARRIER INSPECTOR.

Investigator remarks

FATIGUE FAILURE LWR RUDDER PIVOT BOLT.PILOT AT C

Cause factors

88/1/36 1
MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Subordinate · 1

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 0060. Source file NTSB_1964_4_0060.txt. Modern CAROL record on data.ntsb.gov ↗.

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