An-26 havari i 2016 - Rapport ute nå - ASN

Status:	Final
Date:	Saturday 14 October 2017
Time:	08:23
Type:	Antonov An-26-100
Operator:	Valan International Cargo Charter
Registration:	ER-AVB
C/n / msn:	3204
First flight:	1975
Engines:	2 Ivchenko AI-24VT
Crew:	Fatalities: 3 / Occupants: 3
Passengers:	Fatalities: 1 / Occupants: 7
Total:	Fatalities: 4 / Occupants: 10
Aircraft damage:	Destroyed
Aircraft fate:	Written off (damaged beyond repair)
Location:	0,8 km (0.5 mls) S off Abidjan-Felix Houphouet Boigny Airport (ABJ) (   Cote d'Ivoire)
Phase:	Approach (APR)
Nature:	Cargo
Departure airport:	Ouagadougou Airport (OUA/DFFD), Burkina Faso
Destination airport:	Abidjan-Felix Houphouet Boigny Airport (ABJ/DIAP), Cote d'Ivoire
Flightnumber:	26

Narrative:
The Antonov An-26-100 aircraft, operated by Valan International Cargo Charter, on a military and cargo transport flight for the French forces, took off from Ouagadougou (Burkina Faso) at 05:58 , bound for Abidjan (Côte d'Ivoire), for an estimated landing at 08:04. The captain was Pilot Not Flying (PNF), the copilot was Pilot Flying (PF).
At 06:43, the aircraft entered Abidjan's airspace. 
At 07:55, the crew was cleared for an ILS Z runway 21 approach procedure, and to descend to 2700 ft, report passing FL50. Four minutes later, the the Regional Control Centre called the crew back to inform them that the current procedure now was the VOR Z runway 03 approach. Weather was reported a wind from 40° at 12kt, visibility 4000m, light rain, scattered clouds at 150m and 330m, some cumulonimbus at 600m. 
The flight crew then prepared for the approach and turned down an offer to use runway 21 as the wind had changed direction to 060° at 13kt.
At 08:05, the crew contacted the Tower and informed it that they were descending through FL50 towards runway 03. The Tower Controller cleared him to descend to 2200 ft. As the flight continued, the PNF reported not being able to receive the VOR.
At 08:16 the flight turned onto the final approach heading and at 11 nautical miles out, the PNF instructed the Pilot Flying to use the GPS. At 08:20, the crew informed the Tower that they were passing 7 NM and were cleared to land on runway 03 by the controller, who informed them of a wind of 040°/10kt. 
In between clouds the crew observed boats on the water below them. Visibility decreased and the Tower controller increased the brightness of the runway edge and PAPI lights. Descent was continued altough the crew was not able to see the runwway ahead. After passing Decision Altitude the PNF confirmed the crew's intentions to land. The aircraft descended until it struck the surface of the sea, about 800 meters short of the threshold of runway 03. The aircraft broke in three upon impact. All three flight crew members and one passenger died.

Probable Cause:

Causes of the accident
The probable cause of this accident is the continuation of the approach below minimums without having established formal visual contact with runway references and without adequate monitoring of the aircraft's glide path. The rigorous application of the company SOPs should have necessarily led to a go-around.
The following factors contributed to the accident:
- Underestimation of adverse weather conditions below minimums;
- A lack of knowledge of the environment of Abidjan airport and insufficient awareness of the aircraft's vertical position;
- Inadequate monitoring of aircraft instruments and flight path (altitude and speed) in degraded weather conditions;
- A high workload due to continued final approach training and distraction from tasks not related to flight operations;
- Disabling EGPWS audible alerts due to unwanted alarms;
- Crew resource management (CRM) probably unbalanced by the authority of the PNF over the rest of the crew.
- Strict non-compliance with company SOPs.