Incident Overview
Date: Sunday 21 September 1969
Aircraft Type: Boeing 727-64
Owner/operator: Mexicana de Aviaci¢n
Registration Number: XA-SEJ
Location: 1,5 km NE of Mexico City-Juarez International Airport (MEX) –
ÿ Mexico
Phase of Flight: Approach
Status: Destroyed, written off
Casualties: Fatalities: 27 / Occupants: 118
Component Affected: Aircraft fuselage, forward fuselage, undercarriage.Aircraft fuselage, forward fuselage, undercarriage.
Category: Accident

A Boeing 727 aircraft, cleared for an ILS approach at Mexico City-Juarez International Airport (MEX), suddenly lost height and struck the ground 1500 meters short of the runway. The aircraft subsequently became airborne and collided with a railway embankment. The flight data recorder was missing, and the cockpit voice recorder was absent.A Boeing 727 aircraft, cleared for an ILS approach at Mexico City-Juarez International Airport (MEX), suddenly lost height and struck the ground 1500 meters short of the runway. The aircraft subsequently became airborne and collided with a railway embankment. The flight data recorder was missing, and the cockpit voice recorder was absent.
Description
The Boeing 727 was cleared for a runway 23L ILS approach at Mexico City-Juarez International Airport (MEX) when it suddenly lost height and struck the ground 1500 m short of the runway. The aircraft became airborne again until the undercarriage and forward fuselage struck a railway embankment. Aircraft configuration at the time of the accident was gear down, flaps 30deg, leading edge slats extended, spoilers retracted, stabilizer at 10.25 units nose up. No data could be retrieved from the Flight Data Recorder because it had been incorrectly installed two days prior to the accident. The Cockpit Voice Recorder had been removed and no replacement had been installed. PROBABLE CAUSE: Undetermined.
Primary Cause
Unclear ? potential mechanical failure or system malfunction during the descent.Unclear ? potential mechanical failure or system malfunction during the descent.Share on: