Occurrence No.: AIBN-004-2019       Occurrence Type: Accident      Report Created: Jun 3/12
Title: Loss of Engine Power – Collision with Terrain       Flight Phase: Descent      Aircraft Type: MD-83
Carrier/Owner: Dana Airlines Nigeria Limited       A/C Registration: 5N-RAM
Location: Iju-Ishaga Area of Lagos State, Nigeria
Status: Final Last Update: Mar 13/17

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Summary The solid-state based memory in the CVR was in good condition and retained 30 minutes 53 seconds of audio information. The digital tape-based memory in the FDR succumbed to the post-crash fire and melted, consequently no data could be recovered from it.

The 5N-RAM accident is another example of why the ongoing use of tape-based memory in aircraft recorders used in accident investigation is problematic. In the 5N-RAM accident investigation, the lack of FDR data led to significant challenges in investigating information related to the cause(s) of the aircraft issues (e.g., loss of power in the engines) leading to the accident.

  • These challenges were likely a major contributing factor to the lack of clear specific results in determining the cause(s) of the aircraft issues.
  • These challenges also led to significant extra effort, and cost, in investigating the accident.


Details Details are contained in the following document, and specific sections:


  • 1.11 Flight Recorders

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