Introduction
On 11 August 2018, a Bombardier DHC-8-402 aircraft operated a scheduled passenger flight from Prague Václav Havel Airport (LKPR) to Warsaw Chopin Airport (EPWA). The flight departed in the early morning hours.
Incident Description
Shortly after takeoff, at approximately 05:29 UTC and at an altitude of about 1,240 feet, the flight crew observed an orange followed by a red indication for the left main landing gear position. In response, the crew executed the appropriate checklists and extended the landing gear using the alternate extension method. They then decided to return to Prague. The aircraft subsequently landed without further incident. The crew notified the Maintenance Control Center (MCC) and submitted an Aviation Safety Report (ASR).
Investigation Findings
The investigation determined that the cause of the incident was damage to the left main landing gear uplock spring. No other contributing factors were identified.
Safety Actions
Technical personnel restored the aircraft to airworthy condition. The event was recorded in the operator's Safety Management System (SMS) database and classified according to established criteria. It was also included in the operator's safety performance indicators (SPI). The investigating commission did not issue any safety recommendations.