Atlas / NTSB / CHI78FA002

NTSB CAROL · Event

Event CHI78FA002

1977-10-16 FLAT ROCK, Michigan, United States None 1 aircraft Status: Completed

Aircraft involved

N99275 Sikorsky S-58E 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-58E · N99275

Damage

Destroyed

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

D4

Operator type

Personal/private

Kind of flying

CK

Weather at impact

Sky

CLEAR

Aircraft history

Serial number

00000058-247

Total time

6,977 hrs

Pilot

Certificate

Commercial

Total hours

7,000

Age

33

Investigator remarks

EXTERNAL LIFT OPS.PISTON FAILED IN BOSS AREA.

Cause factors

74/C/AE C
POWERPLANT PISTON,PISTON RINGS Cause
88/C/95 C
MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
88/K/24 K
MISCELLANEOUS ACTS,CONDITIONS JETTISONED LOAD 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 4254. Source file NTSB_1977_3_4254.txt. Modern CAROL record on data.ntsb.gov ↗.

Beyond the agency record

Search this event elsewhere.

Pre-filled searches into the sources where news + community discussion of aviation events lives. External sources are reported, not agency. Treat them as signal that something happened, not as fact about what happened.

TallyAero Live Wire Aviation press

Entity-clustered aviation events in the press — last 24 hr + 30-day archive.

NTSB CAROL Agency ↗

Official agency record + docket.

NTSB Docket Agency ↗

Investigative docket: factual reports, photos, transcripts.

Aviation Safety Network Aviation press ↗

Long-running aviation incident database (Flight Safety Foundation).

Kathryn's Report Aviation press ↗

Community NTSB synthesis blog — often has photos and witness reports.

Aviation Herald Aviation press ↗

Gold-standard aviation incident blog.