What aircraft was involved and where did it happen?

The accident on 1980-07-18 involved a Sikorsky S-58T, registration N69CH, at N, LOUISIANA.

Sikorsky S-58T (N69CH) — Main Rotor Failure at N (1980)

On July 18, 1980, a Sikorsky S-58T (registration N69CH) was involved in an aviation accident near N, LOUISIANA in flight. Investigators recorded the probable cause as: Main Rotor Blades; Material Failure. Factors: Separation In Flight; Vibration,Excessive; Aircraft Came To Rest In Water. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive (1962-1981).

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archive (1962-1981)Primary reportUpdated 1781165124Data API Editorial standards

This account was generated from NTSB coded accident records (1962–1981 archive); the original record contains no narrative.

On July 18, 1980, a Sikorsky S-58T (N69CH) was involved in a recorded occurrence at N, Louisiana during the in flight - normal cruise phase, categorised as main rotor failure.

Accident record

This is a factual summary of the official NTSB coded accident record for a Sikorsky S-58T at N, Louisiana on July 18, 1980.

Date: July 18, 1980
Aircraft: Sikorsky S-58T (registration N69CH)
Location: N, Louisiana
Phase of operation: IN Flight - Normal Cruise
Occurrence type: Main Rotor Failure
Fatalities: 5

Probable cause

The NTSB recorded the following probable cause and contributing factors:

> Main Rotor Blades; Material Failure. Factors: Separation In Flight; Vibration,Excessive; Aircraft Came To Rest In Water

NTSB remarks

The original coded record includes the following remarks (verbatim):

> PAX HEARD LOUD SNAP ABV FLWD BY EXTREME VIB.PTNS OF MAIN ROTOR BLADES NOT FND.CO FLT PLN.

About this record

This account is generated directly from the NTSB’s structured accident data for the 1962–1981 period. It reproduces only the coded facts on file and adds no details beyond them.

1980-07-18: Sikorsky S-58T (N69CH) — N, LOUISIANA