Incident Overview
Date: Wednesday 22 January 1986
Aircraft Type: Boeing 727-21
Owner/operator: H.H. Prince Faisal Bandar Atturki
Registration Number: HZ-TFA
Location: near Riyadh –
ÿ Saudi Arabia
Phase of Flight: En route
Status: Minor, repaired
Casualties: Fatalities: 0 / Occupants: 21
Component Affected: Electronic timer switchElectronic timer switch
Category: Accident
A Boeing 727 HZ-TFA experienced a fire in the master lavatory shortly after takeoff. The fire was detected due to a burning smell and thick black smoke, prompting an emergency descent. The flight engineer successfully extinguished the fire, and the aircraft landed safely on runway 33L.A Boeing 727 HZ-TFA experienced a fire in the master lavatory shortly after takeoff. The fire was detected due to a burning smell and thick black smoke, prompting an emergency descent. The flight engineer successfully extinguished the fire, and the aircraft landed safely on runway 33L.
Description
Boeing 727 HZ-TFA departed Riyadh at 18:55. Some 17 minutes after takeoff, at FL350, the captain noticed the smell of burning plastic. Thick black smoke was discovered in the master lavatory. While the flight engineer tried to extinguish the fire, an emergency descent was initiated and the aircraft returned to Riyadh. The aircraft landed safely on runway 33L. PROBABLE CAUSE: “A defect in the electronic timer switch allowing continuous operation of the flush motor; the flush motor overheated and the temperature rise was sufficient to ignite combustible electrical components.”
Primary Cause
A defect in the electronic timer switch allowing continuous operation of the flush motor, resulting in overheating and ignition of combustible electrical components.A defect in the electronic timer switch allowing continuous operation of the flush motor, resulting in overheating and ignition of combustible electrical components.Share on:
