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ASN Wikibase Occurrence # 48529
Last updated: 7 September 2021
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Date:26-APR-1986
Time:13:08
Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell 206B-3 JetRanger III
Owner/operator:Capital Aviation Services
Registration: 5N-AQC
MSN: 2797
Fatalities:Fatalities: 1 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:7nm NNW of Kaduna Airport -   Nigeria
Phase: Initial climb
Nature:Training
Departure airport:Kaduna Airport
Destination airport:Kaduna Airport
Investigating agency: AIPB Nigeria
Narrative:
The helicopter was on a check-ride flight around Kaduna Airport when the accident occurred.
At the end of the check ride a landing in a bush-clearing was carried out. The helicopter took off from the bush both accelerating and climbing attaining about 60 knots forward speed and a height of about 200ft when the check-Captain reached forward to operate a switch to the 'Off' position either to simulate a complete hydraulic failure or an engine flame-out.
During the ensueing period the main rotor of the helicopter went into an aerodynamic stall accompanied by heavy vibrations of the helicopter. The Check-Captain immediately took over the controls of the helicopter from the left seat, attempted to re-start the engines by turning 'ON' the fuel valve and at the same time establish the helicopter into autorotation.
The aircraft crashed to the ground with an appreciable forward speed and a yaw to the right. The tail boom made the first impact with a six-inch diameter tree trunk after which the boom was sheared off and the helicopter rolled over on the ground coming to a final halt in an inverted position. There was no outbreak of fire.

Sources:

http://aib.gov.ng/genfile.aspx?recordid=37&tablename=publications

Accident investigation:
cover
  
Investigating agency: AIPB Nigeria
Status: Investigation completed
Duration:
Download report: Final report


Revision history:

Date/timeContributorUpdates
27-Nov-2008 07:18 harro Added
25-May-2021 07:58 harro Updated [Narrative, Accident report]

Corrections or additions? ... Edit this accident description