Causes / Contributing Factors
Cause
The operator lifted the van box of ambulift to the height of aircraft door without extending arm-braces, which caused ambulift to become unbalanced and toppled.
Note: Aviation Occurrence Category (ADREP Taxonomy)-Ground Handling (RAMP)
Contributing Factors
The design safeties provided to restrict operation of the van box without extension of arm-braces were not functional.
Unserviceability of system designed safeties and re-wiring of relay switches remained undocumented and unrectified during inspections by Ground Handling Agent (GHA).
Marshaller was not available and operator installed the ambulift with aircraft without any assistance/marshaller.
The operator was not authorized and qualified to operate ambulift.
Pakistan Civil Aviation Authority (CAA) oversight was not effective to ensure compliance to relevant
Standard Operating Procedures and Airworthiness Notice by the GHA.
Final investigation report by Aircraft Accident Investigation Board of Pakistan uploaded on Ministry of Aviation - Government of Pakistan wesbsite
https://aviation.gov.pk/ on November 20, 2023.
https://aviation.gov.pk/SiteImage/Misc/ ... 5b1%5d.pdf