Incident Overview
Date: Monday 15 May 2006
Aircraft Type: Boeing 747-430
Owner/operator: Lufthansa
Registration Number: D-ABTK
Location: Frankfurt International Airport (FRA) –
ÿ Germany
Phase of Flight: Standing
Status: Substantial, repaired
Casualties: Fatalities: 0 / Occupants: 256
Component Affected: Nose Landing GearNose Landing Gear
Investigating Agency: BFUBFU
Category: Accident
A Boeing 747-430 aircraft was scheduled for a flight to Delhi, India, with LH760. During a hydraulic repair, the nose landing gear’s ground lock pin detached, causing the nose gear to retract. The nose gear fell onto a push-back truck.A Boeing 747-430 aircraft was scheduled for a flight to Delhi, India, with LH760. During a hydraulic repair, the nose landing gear’s ground lock pin detached, causing the nose gear to retract. The nose gear fell onto a push-back truck.
Description
A Boeing 747-430 was being prepared at Frankfurt International Airport’s Gate A23 for a scheduled flight, LH760, to Delhi, India. Some repairs were carried out on the hydraulics of the left hand body gear while parked at the gate. During a test sequence the nose landing gear’s ground lock pin fell out. This caused the nose landing gear to retract. The nose fell onto a push-back truck. Conclusions: The reason for the retraction of the nose gear was a malfunction of the lever mechanism within the safety bar in conjunction with the Ground Lock Pin. This left the GLP in the inserted position in an unlocked state.
Primary Cause
Faulty lever mechanism within the safety bar, resulting in an unlocked Ground Lock Pin.Faulty lever mechanism within the safety bar, resulting in an unlocked Ground Lock Pin.Share on:
