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Accident Report Detail

Texas International Airlines, Inc., Douglas DC-9, N1308T

Executive Summary

Texas International Airlines, Inc. (TXI), Douglas DC-9, N1308T, Flight 926, struck a tree and tvo power poles, 12,000 feet short of the runway threshold, during a predawn instrument approach to Harlingen Industrial Airpark, Harlingen, Texas, at 0700 c.s.t. on January 11, 1970. After the aircraft struck the tree and power poles, the flightcrew executed a "missed approach" and proceeded to Intercontinental Airport, Houston, Texas, where a safe landing was made. The aircraft sustained substantial damage as a result of striking the tree and poles. Forty-one persons -- four crewmembers and 31 passengers -- were aboard the aircraft. There were no injuries.

TXI Flight 926 is a regularly scheduled domestic passenger/cargo flight which originates at McAllen, Texas, and terminates at Dallas, Texas, with scheduled en route stops at Harlingen and Houston, Texas. Flight 926 of January 11 took off from McAllen at 0651. The scheduled flight departure time was 0630.

Reported weather conditions at Harlingen at the time the accident occurred were: sky partially obscured, visibility 1/2 mile in fog.

Probable Cause

The Safety Board determines that the probable cause of this accident was the continuation of the descent, during actual instrument conditions, through the Minimal Descent Altitude and into ground obstructions as a result of inadequate flightcrew monitoring of the aircraft altimeters. A contributing factor was a lack of awareness by the nighterew of the actual meteorological conditions, caused by crew fatigue, and company workload priorities which prevented normal air-to-ground communications and deferred the dissemination of essential meteorological information.

Accident Location: Harlingen , TX    
Accident Date: 1/11/1970
Accident ID: FTW70AF046

Date Adopted: 12/2/1970
NTSB Number: AAR-70-28
NTIS Number: PB-197155

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