Incident Overview
Date: Tuesday 9 June 1987
Aircraft Type: Boeing 727-90C
Owner/operator: Alaska Airlines
Registration Number: N766AS
Location: Anchorage International Airport, AK (ANC) –
ÿ United States of America
Phase of Flight: Pushback / towing
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 2
Component Affected: Aircraft brake systemAircraft brake system
Investigating Agency: NTSBNTSB
Category: Other
An avionics technician inadvertently deactivated the brake pressure system while the aircraft was empty, leading to a catastrophic collision with a passenger jet and subsequent fire.An avionics technician inadvertently deactivated the brake pressure system while the aircraft was empty, leading to a catastrophic collision with a passenger jet and subsequent fire.
Description
The mechanic in charge of taxiing the empty aircraft allowed an avionics technician to occupy the pilots seat. They inadvertently deactivated the brake pressurization system. The aircraft struck a passenger jet way and caught fire. PROBABLE CAUSE: “Brakes(normal)..inadvertent deactivation..company maintenance personnel Checklist..not used..company maintenance personnel CONTRIBUTING FACTORS Planning/decision..inadequate..company maintenance personnel”
Primary Cause
Inadvertent deactivation of the brake pressure system by company maintenance personnel.Inadvertent deactivation of the brake pressure system by company maintenance personnel.Share on:
