Incident Overview

Date: Wednesday 10 January 2018
Aircraft Type: de Havilland Canada DHC-8-402Q Dash 8
Owner/operator: LOT Polskie Linie Lotnicze
Registration Number: SP-EQG
Location: Warszawa-Fr‚d‚ric Chopin Airport (WAW/EPWA) – ÿ Poland
Phase of Flight: Landing
Status: Substantial
Casualties: Fatalities: 0 / Occupants: 63
Component Affected: Nose Landing Gear (NLG)Nose Landing Gear (NLG)
Investigating Agency: SCAAISCAAI
Category: Accident
On October 18, 2016, a DHC-8-402Q aircraft experienced a nose gear retraction accident at Warsaw Chopin Airport (EPWA), Poland. During a climb after takeoff from Krak¢w Airport, the nose landing gear (NLG) failed to retract after the landing gear control lever was moved to the UP position. Amber light N DOOR, red light NOSE, and red light on the landing gear control lever illuminated, indicating a malfunction. The crew initiated an emergency landing on EPWA RWY11 with the NLG folded during the landing roll. All passengers and crew were safely evacuated from the aircraft. The aircraft sustained damage requiring repair.On October 18, 2016, a DHC-8-402Q aircraft experienced a nose gear retraction accident at Warsaw Chopin Airport (EPWA), Poland. During a climb after takeoff from Krak¢w Airport, the nose landing gear (NLG) failed to retract after the landing gear control lever was moved to the UP position. Amber light N DOOR, red light NOSE, and red light on the landing gear control lever illuminated, indicating a malfunction. The crew initiated an emergency landing on EPWA RWY11 with the NLG folded during the landing roll. All passengers and crew were safely evacuated from the aircraft. The aircraft sustained damage requiring repair.

Description

LOT flight LO3924, a DHC-8-402Q, was involved in a nose gear retraction accident at Warszawa-Fr‚d‚ric Chopin Airport (EPWA), Poland. During climb after takeoff from Krak¢w Airport, the nose landing gear (NLG) did not retract after moving the landing gear control lever to the UP position. Amber light N DOOR (nose door open), red light NOSE (nose gear not uplocked or downlocked) and red light on the landing gear control lever (gear in transit) illuminated. The CPT decided to continue the flight to the destination (EPWA). During the landing approach to EPWA, the crew extended the landing gear with the alternate system. The main landing gear (MLG) was extended and locked, but the NLG did not change its position. The crew made an emergency landing on EPWA RWY11 with NLG in the transit position, which was folded during the landing roll. When the plane came to rest on runway 11, the passengers were evacuated. All passengers and crew left the plane uninjured. The plane was damaged to an extent that required repair. Cause of the accident The immediate cause of the accident was excessive free play in the retraction/extension system of the nose landing gear. Contributing factors 1. Lack of procedures to measure and monitor the free play in the nose landing gear retraction/extension system during the Time Between Overhaul (30 000 Cycles or 14 years). 2. Lack of analysis of three-point landings which resulted in overload of NLG. 3. Lack of dedicated technological cards to verify possible damage caused by unusual events, such as hitting the drawbar connected to the airplane by a tug. Weather reported about the incident time (1816Z): EPWA 101830Z 10010KT CAVOK 00/M03 Q1016 NOSIG EPWA 101800Z 11009KT CAVOK 00/M03 Q1016 NOSIG

Source of Information

https://www.flightradar24.com/data/flights/lo3924/#10164358, http://wiadomosci.gazeta.pl/wiadomosci/7,114883,22880541,awaryjne-ladowanie-na-okeciu-maszyna-lot-u-ladowala-bez-podwozia.html?utm_source=facebook.com&utm_medium=SM&utm_campaign=FB_Gazetahttps://www.flightradar24.com/data/flights/lo3924/#10164358, http://wiadomosci.gazeta.pl/wiadomosci/7,114883,22880541,awaryjne-ladowanie-na-okeciu-maszyna-lot-u-ladowala-bez-podwozia.html?utm_source=facebook.com&utm_medium=SM&utm_campaign=FB_Gazeta

Primary Cause

Excessive free play in the retraction/extension system of the nose landing gear.Excessive free play in the retraction/extension system of the nose landing gear.

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