Lockheed L-1011-385-1 N723DA

Summary

On 27 June 1997 at about 03:50 local time, a Lockheed L-1011-385-1 registered N723DA was involved in an accident near Covington, Kentucky, United States. 96 people were on board and one was seriously injured. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

27 June 1997 at 03:50

Classification

Accident

Location

Covington, Kentucky, United States

Nearest airport

Cincinnati Regional (CVG)

Coordinates

39.0803, -84.4996

Aircraft

Lockheed L-1011-385-1

Registration

N723DA

Category

Airplane

Engines

3

Operator

Not recorded

Operating rule

Part 121: Air Carrier

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Unknown → Atlanta

Aircraft damage

Not recorded

Weather

VMC

Light

Night/Bright

NTSB number

NYC97LA129

1 person was seriously injured.

the failure of the primary and secondary elevator driveshafts, and the failure of maintenance personnel to detect the failure of the primary shaft during scheduled inspections.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The flight attendant was in the elevator when it dropped to the galley level, and she received a fractured ankle. The elevator was operated by a drive shaft with two co-located shafts. The inner shaft was located inside the secondary shaft. Examination of the elevator lift mechanism revealed that the primary shaft had failed in rotating-bending fatigue. The secondary shaft failure originated from a fatigue crack in a sharp corner of the teeth. Corrosion was found on the surface of the crack. The shafts were inspected at 300-hour intervals, and had last been inspected 33 hours prior to the accident.

Quoted verbatim from the NTSB record.