Accident McDonnell Douglas DC-9-32 N3323L, Tuesday 27 November 1973
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Date:Tuesday 27 November 1973
Time:18:51
Type:Silhouette image of generic DC93 model; specific model in this crash may look slightly different    
McDonnell Douglas DC-9-32
Owner/operator:Delta Air Lines
Registration: N3323L
MSN: 47032/204
Year of manufacture:1967
Total airframe hrs:18233 hours
Engine model:Pratt & Whitney JT8D-7A
Fatalities:Fatalities: 0 / Occupants: 79
Other fatalities:0
Aircraft damage: Destroyed, written off
Category:Accident
Location:Chattanooga Municipal Airport, TN (CHA) -   United States of America
Phase: Approach
Nature:Passenger - Scheduled
Departure airport:Atlanta Municipal Airport, GA (ATL/KATL)
Destination airport:Chattanooga Municipal Airport, TN (CHA/KCHA)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The DC-9 struck approach lights 1600 feet short of the runway while on an ILS approach to runway 20. The aircraft continued, struck dyke 785 feet short of the threshold and skidded for another 1200 feet before coming to rest 250 feet left of the runway centerline.

PROBABLE CAUSE: "The pilot did not recognize the need to correct an excessive rate of descent after the aircraft had passed decision height. This occurred despite two verbal reports of increasing sink rate by the first officer. The captain disregarded the reports by the first officer, possibly because of the influence of a visual illusion caused by the refraction of light through the heavy rain on the windshield. The excessive rate of descent was initiated by a wind shear condition which extended in the lower levels of the approach path and a glide slope that tended toward the lower signal limit."

Accident investigation:
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Investigating agency: NTSB
Report number: DCA74AZ011
Status: Investigation completed
Duration: 11 months
Download report: Final report

Sources:

NTSB-AAR-74-13

Revision history:

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