Incident Overview

Date: Saturday 1 February 1975
Aircraft Type: Douglas DC-3D
Owner/operator: Horizon Properties
Registration Number: N15HC
Location: Houston-Intercontinental Airport, TX (IAH) – ÿ United States of America
Phase of Flight: Approach
Status: Destroyed, written off
Casualties: Fatalities: 5 / Occupants: 16
Component Affected: Aircraft wingAircraft wing
Category: Accident
A DC-3 aircraft, en route from Huntsville, diverted to Houston Intercontinental Airport due to low weather conditions. The pilot attempted an NDB approach, but the ILS localizer receiver failed, leading to an abandoned runway 08 ILS approach. Subsequent descent was reduced to below minimum descent altitude, resulting in a collision with a power line tower. The aircraft sustained significant damage, including a wing tear and a nose-down attitude.A DC-3 aircraft, en route from Huntsville, diverted to Houston Intercontinental Airport due to low weather conditions. The pilot attempted an NDB approach, but the ILS localizer receiver failed, leading to an abandoned runway 08 ILS approach. Subsequent descent was reduced to below minimum descent altitude, resulting in a collision with a power line tower. The aircraft sustained significant damage, including a wing tear and a nose-down attitude.

Description

Weather at Huntsville was below minima, so the flight was diverted to Houston Intercontinental Airport. The runway 08 ILS approach was abandoned due to intermittent operation of the aircraft ILS localizer receiver instruments. The crew then tried an NDB approach with Houston TRICON monitoring on surveillance radar. The DC-3 continued descent below minimum descent altitude until the left wing collided with a 23 m high power line tower, located 3 km short of the runway. About 5 m of wing was torn off; the aircraft continued 195 m before striking the ground in a 30-degree nose down and inverted attitude. PROBABLE CAUSE: pilot in command – improper in-flight decisions or planning pilot in command – improper ifr operation FACTORS: weather – low ceiling weather – fog terrain – high obstructions miscellaneous acts,conditions – pilot fatigue

Primary Cause

Pilot in command ? improper in-flight decisions or planning; improper IFR operationPilot in command ? improper in-flight decisions or planning; improper IFR operation

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